/* ============================================
   DESIGN TOKENS
   ============================================ */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #0e0e16;
    --bg-card: rgba(18, 18, 30, 0.7);
    --bg-card-solid: #12121e;
    --bg-input: rgba(255, 255, 255, 0.04);
    --bg-input-focus: rgba(255, 255, 255, 0.08);

    --text-primary: #f0f0f5;
    --text-secondary: #9898b0;
    --text-muted: #5a5a75;

    --accent-1: #6c5ce7;
    --accent-1-light: #a29bfe;
    --accent-2: #00cec9;
    --accent-2-light: #55efc4;
    --accent-gradient: linear-gradient(135deg, #6c5ce7, #a29bfe, #00cec9);
    --accent-gradient-r: linear-gradient(135deg, #00cec9, #6c5ce7);

    --person-1: #6c5ce7;
    --person-1-bg: rgba(108, 92, 231, 0.12);
    --person-1-border: rgba(108, 92, 231, 0.3);
    --person-2: #00cec9;
    --person-2-bg: rgba(0, 206, 201, 0.12);
    --person-2-border: rgba(0, 206, 201, 0.3);

    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --error: #ff6b6b;

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 48px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 60px rgba(108,92,231,0.12);

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s cubic-bezier(0.4,0,0.2,1);
    --transition-smooth: 0.5s cubic-bezier(0.4,0,0.2,1);

    --header-height: 72px;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 24px);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   ANIMATED BACKGROUND
   ============================================ */
.bg-grid {
    position: fixed; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none; z-index: 0;
}

.bg-glow {
    position: fixed; border-radius: 50%;
    filter: blur(120px); pointer-events: none; z-index: 0;
    animation: floatGlow 20s ease-in-out infinite;
}
.bg-glow-1 { width: 500px; height: 500px; background: rgba(108,92,231,0.07); top: -10%; left: -5%; }
.bg-glow-2 { width: 400px; height: 400px; background: rgba(0,206,201,0.05); top: 40%; right: -10%; animation-delay: -7s; }
.bg-glow-3 { width: 350px; height: 350px; background: rgba(253,121,168,0.04); bottom: -5%; left: 30%; animation-delay: -14s; }

@keyframes floatGlow {
    0%,100% { transform: translate(0,0) scale(1); }
    33% { transform: translate(30px,-20px) scale(1.1); }
    66% { transform: translate(-20px,20px) scale(0.95); }
}

#particles { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.particle {
    position: absolute; width: 3px; height: 3px; border-radius: 50%;
    background: rgba(162,155,254,0.25);
    animation: particleFloat linear infinite;
}
@keyframes particleFloat {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 1; } 90% { opacity: 1; }
    100% { transform: translateY(-100px) scale(1); opacity: 0; }
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
    position: fixed; top: 0; left: 0; right: 0;
    height: var(--header-height);
    z-index: 100;
    background: rgba(10,10,15,0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition-normal);
}

.site-header.scrolled {
    background: rgba(10,10,15,0.92);
    box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}

.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex; align-items: center; gap: 10px;
    font-family: var(--font-display);
    font-size: 1.25rem; font-weight: 700;
    transition: var(--transition-fast);
}
.logo:hover { opacity: 0.8; }

.logo-icon {
    width: 38px; height: 38px; border-radius: var(--radius-sm);
    background: var(--accent-gradient);
    display: flex; align-items: center; justify-content: center;
    color: white;
}

.logo-accent { color: var(--accent-1-light); }

.main-nav { display: flex; align-items: center; gap: 8px; }

.nav-link {
    padding: 8px 16px; border-radius: var(--radius-sm);
    font-size: 0.88rem; font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}
.nav-link:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.nav-link.active { color: var(--accent-1-light); background: rgba(108,92,231,0.1); }

.mobile-menu-btn {
    display: none; flex-direction: column; gap: 5px;
    padding: 8px; background: none; border: none; cursor: pointer;
}
.hamburger-line {
    width: 22px; height: 2px; background: var(--text-secondary);
    border-radius: 1px; transition: var(--transition-normal);
}
.mobile-menu-btn.active .hamburger-line:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.mobile-menu-btn.active .hamburger-line:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active .hamburger-line:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Mobile Overlay */
.mobile-menu-overlay {
    position: fixed; inset: 0; top: var(--header-height);
    background: rgba(10,10,15,0.95);
    backdrop-filter: blur(20px);
    z-index: 99; display: none;
    padding: 32px 24px;
}
.mobile-menu-overlay.open { display: block; animation: fadeIn 0.3s ease; }

.mobile-nav { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav-link {
    padding: 16px 20px; border-radius: var(--radius-md);
    font-size: 1.05rem; font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-normal);
    border: 1px solid transparent;
}
.mobile-nav-link:hover {
    color: var(--text-primary); background: rgba(255,255,255,0.04);
    border-color: var(--border);
}

/* ============================================
   HERO
   ============================================ */
.hero-section {
    padding: calc(var(--header-height) + 60px) 0 80px;
    text-align: center;
    position: relative; z-index: 1;
}

.hero-container { max-width: 750px; margin: 0 auto; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(108,92,231,0.1); border: 1px solid rgba(108,92,231,0.2);
    padding: 6px 18px; border-radius: var(--radius-full);
    font-size: 0.8rem; font-weight: 500; color: var(--accent-1-light);
    margin-bottom: 28px; letter-spacing: 0.02em;
    animation: fadeInUp 0.6s ease;
}

.badge-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--accent-2);
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.8); } }

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 800; line-height: 1.12;
    letter-spacing: -0.03em; margin-bottom: 20px;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.08rem; color: var(--text-secondary); line-height: 1.7;
    max-width: 560px; margin: 0 auto 32px;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions {
    display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
    margin-bottom: 48px;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 28px; background: var(--accent-gradient);
    border: none; border-radius: var(--radius-md);
    color: white; font-family: var(--font-primary);
    font-size: 0.95rem; font-weight: 600;
    cursor: pointer; transition: var(--transition-normal);
    position: relative; overflow: hidden;
}
.btn-primary::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
    opacity: 0; transition: var(--transition-normal);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(108,92,231,0.3); }
.btn-primary:hover::before { opacity: 1; }

.btn-secondary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 24px; background: rgba(255,255,255,0.04);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    color: var(--text-secondary); font-family: var(--font-primary);
    font-size: 0.95rem; font-weight: 500;
    cursor: pointer; transition: var(--transition-normal);
}
.btn-secondary:hover { background: rgba(255,255,255,0.08); border-color: var(--border-hover); color: var(--text-primary); }

/* Stats */
.hero-stats {
    display: flex; justify-content: center; gap: 32px; flex-wrap: wrap;
    animation: fadeInUp 0.6s ease 0.4s both;
}
.hero-stat { text-align: center; }
.hero-stat-value {
    font-family: var(--font-display); font-size: 1.3rem; font-weight: 700;
    color: var(--accent-1-light);
}
.hero-stat-label { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; }
.hero-stat-divider { width: 1px; background: var(--border); align-self: stretch; }

/* ============================================
   SECTIONS — COMMON
   ============================================ */
.section {
    padding: 80px 0;
    position: relative; z-index: 1;
}

.section-header {
    text-align: center; margin-bottom: 48px;
}

.section-tag {
    display: inline-block;
    font-size: 0.78rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--accent-1-light);
    background: rgba(108,92,231,0.1); border: 1px solid rgba(108,92,231,0.2);
    padding: 4px 14px; border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.section-title-main {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    font-weight: 700; letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-desc {
    font-size: 1rem; color: var(--text-secondary); line-height: 1.7;
    max-width: 560px; margin: 0 auto;
}

/* ============================================
   CALCULATOR CARD
   ============================================ */
.calculator-section { padding-top: 40px; }

.calc-card {
    max-width: 720px; margin: 0 auto;
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    padding: 32px; box-shadow: var(--shadow-lg), var(--shadow-glow);
    text-align: left;
}

.mode-tabs {
    display: flex; position: relative;
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-md); padding: 4px; margin-bottom: 28px; gap: 4px;
}
.mode-tab {
    flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 12px; border: none; background: transparent;
    color: var(--text-muted); font-family: var(--font-primary);
    font-size: 0.85rem; font-weight: 500; cursor: pointer;
    border-radius: var(--radius-sm); transition: var(--transition-normal);
    position: relative; z-index: 1; white-space: nowrap;
}
.mode-tab:hover { color: var(--text-secondary); }
.mode-tab.active { color: var(--text-primary); }
.tab-indicator {
    position: absolute; height: calc(100% - 8px); top: 4px;
    background: rgba(108,92,231,0.15); border: 1px solid rgba(108,92,231,0.25);
    border-radius: var(--radius-sm); transition: var(--transition-smooth); z-index: 0;
}

.mode-panel { display: none; animation: fadeIn 0.3s ease; }
.mode-panel.active { display: block; }

.person-row { display: flex; align-items: flex-start; gap: 16px; }
.person-avatar {
    flex-shrink: 0; width: 48px; height: 48px;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center; margin-top: 6px;
}
.person-1-color { background: var(--person-1-bg); border: 1px solid var(--person-1-border); color: var(--person-1); }
.person-2-color { background: var(--person-2-bg); border: 1px solid var(--person-2-border); color: var(--person-2); }

.person-fields { flex: 1; min-width: 0; }
.field-label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 8px; }
.input-sub-label {
    display: block; font-size: 0.72rem; color: var(--text-muted);
    margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 500;
}
.date-inputs { display: grid; grid-template-columns: 1fr 0.7fr 1fr; gap: 8px; }
.age-input-row { display: flex; gap: 8px; }
.flex-1 { flex: 1; }
.input-group { display: flex; flex-direction: column; }

.styled-select, .styled-input {
    width: 100%; padding: 10px 12px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-family: var(--font-primary); font-size: 0.9rem;
    transition: var(--transition-normal); outline: none;
    appearance: none; -webkit-appearance: none;
}
.styled-select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235a5a75' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 10px center;
    padding-right: 30px;
}
.styled-select option { background: #1a1a2e; color: var(--text-primary); }
.styled-input::placeholder { color: var(--text-muted); }
.styled-select:hover, .styled-input:hover { border-color: var(--border-hover); background: var(--bg-input-focus); }
.styled-select:focus, .styled-input:focus { border-color: var(--accent-1); background: var(--bg-input-focus); box-shadow: 0 0 0 3px rgba(108,92,231,0.1); }
.styled-input[type="number"]::-webkit-inner-spin-button,
.styled-input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.styled-input[type="number"] { -moz-appearance: textfield; }

.swap-divider { display: flex; align-items: center; gap: 16px; margin: 20px 0; padding-left: 64px; }
.divider-line { flex: 1; height: 1px; background: var(--border); }
.swap-btn {
    flex-shrink: 0; width: 40px; height: 40px; border-radius: 50%;
    border: 1px solid var(--border); background: rgba(255,255,255,0.03);
    color: var(--text-muted); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition-normal);
}
.swap-btn:hover { background: rgba(108,92,231,0.1); border-color: var(--person-1-border); color: var(--accent-1-light); transform: rotate(180deg); }

.actions { display: flex; gap: 8px; margin-top: 28px; }
.btn-calculate {
    flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 24px; background: var(--accent-gradient);
    border: none; border-radius: var(--radius-md);
    color: white; font-family: var(--font-primary);
    font-size: 0.95rem; font-weight: 600; cursor: pointer;
    transition: var(--transition-normal); position: relative; overflow: hidden;
}
.btn-calculate::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent); opacity: 0; transition: var(--transition-normal); }
.btn-calculate:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(108,92,231,0.3); }
.btn-calculate:hover::before { opacity: 1; }

.btn-reset {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 20px; background: rgba(255,255,255,0.04);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    color: var(--text-secondary); font-family: var(--font-primary);
    font-size: 0.9rem; font-weight: 500; cursor: pointer;
    transition: var(--transition-normal);
}
.btn-reset:hover { background: rgba(255,255,255,0.08); border-color: var(--border-hover); color: var(--text-primary); }

.error-msg {
    margin-top: 16px; padding: 10px 16px; border-radius: var(--radius-sm);
    background: rgba(255,107,107,0.1); border: 1px solid rgba(255,107,107,0.2);
    color: var(--error); font-size: 0.85rem; display: none; animation: shake 0.4s ease;
}
.error-msg.visible { display: block; }
@keyframes shake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); } }

/* ============================================
   RESULTS
   ============================================ */
.results-section { max-width: 720px; margin: 24px auto 0; text-align: left; }
.results-section.hidden { display: none; }

.result-hero-card {
    text-align: center; padding: 40px 24px;
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    margin-bottom: 16px; position: relative; overflow: hidden;
    animation: fadeInUp 0.5s ease;
}
.result-hero-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--accent-gradient); }
.result-hero-label { font-size: 0.85rem; font-weight: 500; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 16px; }
.result-hero-value {
    font-family: var(--font-display); font-size: clamp(2rem,6vw,3.5rem);
    font-weight: 800; background: var(--accent-gradient);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; line-height: 1.2; margin-bottom: 8px;
}
.result-hero-sub { font-size: 0.95rem; color: var(--text-secondary); }

.result-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; margin-bottom: 16px; }
.result-tile {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 20px 12px; text-align: center; transition: var(--transition-normal);
    animation: fadeInUp 0.5s ease both;
}
.result-tile:nth-child(1) { animation-delay: 0.1s; }
.result-tile:nth-child(2) { animation-delay: 0.15s; }
.result-tile:nth-child(3) { animation-delay: 0.2s; }
.result-tile:nth-child(4) { animation-delay: 0.25s; }
.result-tile:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-md); }
.tile-icon { color: var(--accent-1-light); margin-bottom: 8px; opacity: 0.8; }
.tile-value { font-family: var(--font-display); font-size: 1.8rem; font-weight: 700; margin-bottom: 2px; }
.tile-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 500; }

.card-title {
    font-family: var(--font-display); font-size: 1.1rem; font-weight: 600;
    display: flex; align-items: center; gap: 8px; margin-bottom: 20px;
}
.card-title svg { color: var(--accent-1-light); opacity: 0.8; }

.timeline-card, .comparison-card, .funfacts-card, .generation-card {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    padding: 24px; margin-bottom: 16px; animation: fadeInUp 0.5s ease 0.3s both;
}

/* Timeline */
.timeline-track {
    position: relative; height: 8px;
    background: rgba(255,255,255,0.05); border-radius: 4px;
    margin: 60px 0 40px; overflow: visible;
}
.timeline-fill { position: absolute; height: 100%; border-radius: 4px; background: var(--accent-gradient); transition: width 1s cubic-bezier(0.4,0,0.2,1); }
.timeline-point { position: absolute; top: 50%; transform: translate(-50%,-50%); width: 20px; height: 20px; border-radius: 50%; border: 3px solid; z-index: 2; }
.timeline-point-1 { border-color: var(--person-1); background: var(--bg-primary); left: 0; }
.timeline-point-2 { border-color: var(--person-2); background: var(--bg-primary); }
.timeline-label { position: absolute; top: -48px; transform: translateX(-50%); text-align: center; white-space: nowrap; }
.timeline-label-name { font-size: 0.75rem; font-weight: 600; margin-bottom: 2px; }
.timeline-label-date { font-size: 0.7rem; color: var(--text-muted); }
.timeline-gap-label {
    position: absolute; bottom: -38px; left: 50%; transform: translateX(-50%);
    background: rgba(108,92,231,0.12); border: 1px solid rgba(108,92,231,0.2);
    padding: 4px 14px; border-radius: var(--radius-full);
    font-size: 0.78rem; font-weight: 600; color: var(--accent-1-light); white-space: nowrap;
}

/* Comparison */
.comparison-bar-row { margin-bottom: 20px; }
.comparison-bar-row:last-child { margin-bottom: 0; }
.comparison-bar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.comparison-bar-label { font-size: 0.82rem; font-weight: 500; color: var(--text-secondary); }
.comparison-bar-value { font-size: 0.82rem; font-weight: 600; font-family: var(--font-display); }
.comparison-bar-track { height: 12px; background: rgba(255,255,255,0.04); border-radius: 6px; overflow: hidden; }
.comparison-bar-fill { height: 100%; border-radius: 6px; transition: width 1s cubic-bezier(0.4,0,0.2,1); }
.comparison-bar-fill.person-1-bar { background: linear-gradient(90deg, var(--person-1), var(--accent-1-light)); }
.comparison-bar-fill.person-2-bar { background: linear-gradient(90deg, var(--person-2), var(--accent-2-light)); }

/* Fun Facts */
.funfacts-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: 8px; }
.funfact-item {
    display: flex; align-items: flex-start; gap: 14px; padding: 14px;
    background: rgba(255,255,255,0.02); border: 1px solid var(--border);
    border-radius: var(--radius-md); transition: var(--transition-normal);
}
.funfact-item:hover { background: rgba(255,255,255,0.04); border-color: var(--border-hover); transform: translateY(-2px); }
.funfact-emoji { font-size: 1.6rem; flex-shrink: 0; line-height: 1; }
.funfact-value { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; margin-bottom: 2px; }
.funfact-label { font-size: 0.78rem; color: var(--text-muted); line-height: 1.4; }

/* Generation */
.generation-content { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ============================================
   SPECIALTY CALCULATOR PAGES
   ============================================ */
.specialty-layout {
    position: relative;
    z-index: 1;
    padding-top: 104px;
}

.specialty-card {
    max-width: 760px;
    margin: 24px auto 0;
}

.specialty-question {
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 18px;
}

.specialty-form {
    display: grid;
    gap: 14px;
}

.specialty-field {
    background: rgba(255,255,255,0.025);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px;
}

.specialty-field .person-fields {
    width: 100%;
}

.specialty-insight {
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.035);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    padding: 16px 18px;
    margin-top: 14px;
}

.specialty-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.specialty-link-group {
    border: 1px solid var(--border);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 20px;
}

.specialty-link-group h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    margin-bottom: 12px;
}

.specialty-link-group a {
    display: block;
    color: var(--text-secondary);
    padding: 9px 0;
    border-top: 1px solid rgba(255,255,255,0.05);
    transition: var(--transition-fast);
}

.specialty-link-group a:hover {
    color: var(--accent-2-light);
    transform: translateX(3px);
}

.more-calculators-section {
    overflow: hidden;
}

.more-calculators-section .container {
    max-width: 1180px;
}

.more-calculators-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.more-calculators-card {
    min-height: 100%;
    border: 1px solid var(--border);
    background: rgba(18,18,30,0.58);
    border-radius: var(--radius-lg);
    padding: 28px 30px 34px;
    box-shadow: var(--shadow-sm);
}

.more-calculators-card h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 18px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.more-calculators-card a {
    display: block;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.55;
    padding: 13px 0;
    border-bottom: 1px solid rgba(255,255,255,0.045);
    transition: var(--transition-fast);
}

.more-calculators-card a:last-child {
    border-bottom: 0;
}

.more-calculators-card a:hover {
    color: var(--accent-2-light);
    transform: translateX(4px);
}

.breadcrumb {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-bottom: 14px;
}

.breadcrumb a {
    color: var(--accent-2-light);
}
.generation-person { padding: 16px; border-radius: var(--radius-md); border: 1px solid var(--border); }
.generation-person.gen-p1 { background: var(--person-1-bg); border-color: var(--person-1-border); }
.generation-person.gen-p2 { background: var(--person-2-bg); border-color: var(--person-2-border); }
.gen-person-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; margin-bottom: 4px; }
.gen-p1 .gen-person-label { color: var(--person-1); }
.gen-p2 .gen-person-label { color: var(--person-2); }
.gen-name { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; margin-bottom: 2px; }
.gen-years { font-size: 0.8rem; color: var(--text-secondary); }
.gen-same {
    grid-column: 1/-1; text-align: center; padding: 14px;
    background: rgba(108,92,231,0.08); border: 1px solid rgba(108,92,231,0.15);
    border-radius: var(--radius-md);
}
.gen-same-text { font-size: 0.9rem; color: var(--accent-1-light); font-weight: 500; }

/* ============================================
   CONTENT SECTIONS — SHARED
   ============================================ */
.content-section { }
.content-section.alt-bg {
    background: linear-gradient(180deg, transparent 0%, rgba(108,92,231,0.02) 50%, transparent 100%);
}
.content-section p {
    font-size: 0.92rem; color: var(--text-secondary); line-height: 1.75;
    margin-bottom: 14px;
}
.content-section p:last-child { margin-bottom: 0; }
.content-section h3 {
    font-family: var(--font-display); font-size: 1.1rem; font-weight: 600;
    margin-bottom: 12px; color: var(--text-primary);
}

/* ============================================
   WHAT IS — INTERACTIVE FLOW DIAGRAM
   ============================================ */
.content-intro-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
}
.content-text-block p { margin-bottom: 16px; }

.flow-diagram-container {
    display: flex; align-items: center; justify-content: center;
}

.interactive-flow-diagram {
    display: flex; align-items: center; gap: 0; width: 100%;
}
.ifd-column {
    display: flex; flex-direction: column; gap: 16px; flex-shrink: 0;
}
.ifd-node {
    position: relative; padding: 16px 14px; border-radius: var(--radius-lg);
    text-align: center; min-width: 100px;
    border: 1px solid var(--border);
    background: var(--bg-card); backdrop-filter: blur(10px);
    transition: var(--transition-normal);
}
.ifd-node:hover { border-color: var(--border-hover); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.ifd-node-icon { font-size: 1.4rem; margin-bottom: 4px; }
.ifd-node-title { font-size: 0.78rem; font-weight: 600; color: var(--text-primary); }
.ifd-node-sub { font-size: 0.68rem; color: var(--text-muted); }

.ifd-input-node { border-color: var(--person-1-border); background: var(--person-1-bg); }
.ifd-engine-node { border-color: rgba(108,92,231,0.3); background: rgba(108,92,231,0.08); }
.ifd-output-node { border-color: var(--person-2-border); background: var(--person-2-bg); }

.ifd-node-pulse {
    position: absolute; inset: -4px; border-radius: var(--radius-lg);
    border: 2px solid var(--accent-1); opacity: 0;
    animation: flowPulse 2s ease-in-out infinite;
}
.ifd-engine-pulse { border-color: var(--accent-1); animation-delay: 0.5s; }
.ifd-output-pulse { border-color: var(--accent-2); animation-delay: 1s; }

@keyframes flowPulse {
    0%, 100% { opacity: 0; transform: scale(1); }
    50% { opacity: 0.3; transform: scale(1.05); }
}

.ifd-arrows { flex: 1; min-width: 40px; display: flex; align-items: center; justify-content: center; }
.ifd-arrow-svg { width: 100%; height: 120px; overflow: visible; }
.ifd-arrow-out { height: 60px; }
.ifd-arrow-path { stroke-dasharray: 4 4; }
.ifd-dot { filter: drop-shadow(0 0 4px currentColor); }

/* ============================================
   WHY USE
   ============================================ */
.why-use-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.why-card {
    padding: 28px 24px;
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    transition: var(--transition-normal);
}
.why-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-md); }
.why-card-icon {
    width: 50px; height: 50px; border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; margin-bottom: 16px;
}
.why-card-icon.pink { background: rgba(253,121,168,0.12); }
.why-card-icon.teal { background: rgba(0,206,201,0.12); }
.why-card-icon.purple { background: rgba(108,92,231,0.12); }

/* ============================================
   HOW TO USE — STEPS
   ============================================ */
.how-to-steps { max-width: 800px; margin: 0 auto; }
.how-to-step {
    display: grid; grid-template-columns: 56px 1fr 200px; gap: 20px;
    align-items: center;
    padding: 24px; background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    transition: var(--transition-normal);
}
.how-to-step:hover { border-color: var(--border-hover); box-shadow: var(--shadow-md); }

.step-number-large {
    width: 56px; height: 56px; border-radius: 50%;
    background: var(--accent-gradient);
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-display); font-size: 1.4rem; font-weight: 800;
    color: white; flex-shrink: 0;
}

.step-content h3 {
    font-family: var(--font-display); font-size: 1rem; font-weight: 600;
    margin-bottom: 6px;
}
.step-content p { font-size: 0.85rem; margin-bottom: 0; }

.step-connector-line {
    width: 2px; height: 28px; margin: 0 auto;
    background: linear-gradient(180deg, var(--accent-1), var(--accent-2));
    border-radius: 1px; opacity: 0.4;
}

/* Step visuals */
.step-visual { display: flex; align-items: center; justify-content: center; }

.mini-tabs-demo {
    display: flex; gap: 4px; padding: 4px;
    background: rgba(255,255,255,0.03); border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}
.mini-tab {
    padding: 6px 10px; border-radius: 6px;
    font-size: 0.68rem; font-weight: 500;
    color: var(--text-muted); white-space: nowrap;
}
.mini-tab.active {
    background: rgba(108,92,231,0.15); border: 1px solid rgba(108,92,231,0.25);
    color: var(--accent-1-light);
}

.mini-input-demo {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px; background: rgba(255,255,255,0.03);
    border: 1px solid var(--border); border-radius: var(--radius-md);
}
.mini-person { font-size: 0.75rem; font-weight: 500; display: flex; align-items: center; gap: 6px; }
.mini-dot { width: 8px; height: 8px; border-radius: 50%; }
.mini-dot.p1 { background: var(--person-1); }
.mini-dot.p2 { background: var(--person-2); }
.mini-swap {
    font-size: 1rem; color: var(--text-muted);
    animation: miniSwapPulse 2s ease-in-out infinite;
}
@keyframes miniSwapPulse { 0%,100% { opacity: 0.4; } 50% { opacity: 1; } }

.mini-result-demo { text-align: center; }
.mini-result-pill {
    display: inline-block; padding: 8px 16px;
    background: var(--accent-gradient); border-radius: var(--radius-full);
    font-size: 0.75rem; font-weight: 700; color: white;
    animation: resultGlow 2s ease-in-out infinite alternate;
}
@keyframes resultGlow {
    0% { box-shadow: 0 0 8px rgba(108,92,231,0.2); }
    100% { box-shadow: 0 0 20px rgba(108,92,231,0.5); }
}

/* ============================================
   FORMULA SECTION
   ============================================ */
.formula-section {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start;
}
.formula-text ol.formula-steps-list {
    list-style: none; counter-reset: fstep; padding-left: 0; margin: 16px 0;
}
.formula-steps-list li {
    counter-increment: fstep;
    position: relative; padding-left: 32px; margin-bottom: 12px;
    font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7;
}
.formula-steps-list li::before {
    content: counter(fstep); position: absolute; left: 0; top: 2px;
    width: 22px; height: 22px; border-radius: 50%;
    background: rgba(108,92,231,0.15); color: var(--accent-1-light);
    font-size: 0.72rem; font-weight: 700; display: flex; align-items: center; justify-content: center;
}

.formula-card {
    padding: 28px; background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    text-align: center;
}
.formula-title {
    font-family: var(--font-display); font-size: 0.85rem; font-weight: 600;
    color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em;
    margin-bottom: 20px;
}
.formula-equation {
    display: flex; align-items: center; justify-content: center;
    gap: 10px; flex-wrap: wrap; margin-bottom: 24px;
}
.formula-part {
    padding: 8px 16px; border-radius: var(--radius-sm);
    font-family: var(--font-display); font-size: 1rem; font-weight: 700;
}
.formula-date2 { background: var(--person-2-bg); border: 1px solid var(--person-2-border); color: var(--person-2); }
.formula-date1 { background: var(--person-1-bg); border: 1px solid var(--person-1-border); color: var(--person-1); }
.formula-result {
    background: linear-gradient(135deg, rgba(108,92,231,0.1), rgba(0,206,201,0.1));
    border: 1px solid rgba(108,92,231,0.2);
    color: var(--accent-1-light);
}
.formula-operator {
    font-family: var(--font-display); font-size: 1.2rem; font-weight: 700;
    color: var(--text-muted);
}

.formula-breakdown {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
}
.breakdown-item {
    padding: 12px; border-radius: var(--radius-md);
    background: rgba(255,255,255,0.02); border: 1px solid var(--border);
}
.breakdown-label {
    display: block; font-size: 0.72rem; font-weight: 600;
    color: var(--accent-1-light); text-transform: uppercase; letter-spacing: 0.06em;
    margin-bottom: 4px;
}
.breakdown-value { font-size: 0.8rem; color: var(--text-secondary); font-weight: 500; }

/* ============================================
   YEAR FORMULA — LIVE CALC
   ============================================ */
.year-formula-section {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start;
}

.live-calc-card {
    padding: 24px; background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
}
.live-calc-title {
    font-family: var(--font-display); font-size: 0.9rem; font-weight: 600;
    margin-bottom: 16px; color: var(--accent-1-light);
}
.live-calc-inputs {
    display: flex; align-items: flex-end; gap: 10px; flex-wrap: wrap;
}
.live-calc-field { flex: 1; min-width: 80px; }
.live-calc-field label {
    display: block; font-size: 0.72rem; font-weight: 500; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px;
}
.live-calc-input {
    width: 100%; padding: 10px 12px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-family: var(--font-primary); font-size: 0.9rem;
    transition: var(--transition-normal); outline: none;
}
.live-calc-input:focus { border-color: var(--accent-1); box-shadow: 0 0 0 3px rgba(108,92,231,0.1); }
.live-calc-input::-webkit-inner-spin-button,
.live-calc-input::-webkit-outer-spin-button { -webkit-appearance: none; }
.live-calc-input { -moz-appearance: textfield; }

.live-calc-minus, .live-calc-equals {
    font-family: var(--font-display); font-size: 1.3rem; font-weight: 700;
    color: var(--text-muted); padding-bottom: 8px;
}
.live-calc-result {
    padding: 10px 16px; background: var(--accent-gradient);
    border-radius: var(--radius-sm); color: white;
    font-family: var(--font-display); font-size: 0.95rem; font-weight: 700;
    white-space: nowrap; min-width: 90px; text-align: center;
}

/* ============================================
   EXAMPLES
   ============================================ */
.examples-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.example-card {
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    overflow: hidden; background: var(--bg-card); backdrop-filter: blur(20px);
    transition: var(--transition-normal);
}
.example-card:hover { border-color: var(--border-hover); }
.example-card.open { border-color: rgba(108,92,231,0.25); }

.example-header {
    width: 100%; display: flex; align-items: center; justify-content: space-between;
    padding: 18px 24px; background: none; border: none;
    color: var(--text-primary); font-family: var(--font-primary);
    cursor: pointer; gap: 16px; transition: var(--transition-normal);
    text-align: left;
}
.example-header:hover { background: rgba(255,255,255,0.02); }
.example-header-left { display: flex; align-items: center; gap: 14px; }
.example-icon { font-size: 1.4rem; flex-shrink: 0; }
.example-header h3 {
    font-size: 0.95rem; font-weight: 500; margin-bottom: 2px;
}
.example-subtitle { font-size: 0.78rem; color: var(--text-muted); margin: 0; }

.example-chevron {
    flex-shrink: 0; color: var(--text-muted);
    transition: transform 0.3s ease;
}
.example-card.open .example-chevron { transform: rotate(180deg); color: var(--accent-1-light); }

.example-body {
    max-height: 0; overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1), padding 0.3s ease;
    padding: 0 24px;
}
.example-card.open .example-body { max-height: 600px; padding: 0 24px 24px; }

.example-calc-visual {
    margin: 16px 0; padding: 16px; border-radius: var(--radius-md);
    background: rgba(255,255,255,0.02); border: 1px solid var(--border);
}
.ecv-row {
    display: flex; justify-content: space-between; padding: 6px 0;
    font-size: 0.85rem;
}
.ecv-label { color: var(--text-muted); }
.ecv-value { color: var(--text-primary); font-weight: 500; font-family: var(--font-display); }
.ecv-divider { height: 1px; background: var(--border); margin: 8px 0; }
.ecv-result .ecv-value {
    color: var(--accent-1-light); font-weight: 700;
}
.example-note {
    font-size: 0.82rem !important; color: var(--text-muted) !important;
    font-style: italic; margin-top: 12px;
    padding: 10px 14px; border-radius: var(--radius-sm);
    background: rgba(108,92,231,0.06); border-left: 3px solid var(--accent-1);
}

/* ============================================
   MANUAL VS CALCULATOR
   ============================================ */
.manual-vs-calc {
    display: grid; grid-template-columns: 1fr auto 1fr; gap: 24px;
    align-items: start;
}
.comparison-column {
    padding: 24px; border-radius: var(--radius-xl);
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border);
}
.comparison-col-header {
    display: flex; align-items: center; gap: 10px;
    margin-bottom: 16px; padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}
.comparison-col-header h3 { font-size: 1rem; margin-bottom: 0; }
.comp-icon {
    width: 32px; height: 32px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem; font-weight: 700;
}
.comparison-col-header.bad .comp-icon { background: rgba(255,107,107,0.15); color: #ff6b6b; }
.comparison-col-header.good .comp-icon { background: rgba(85,239,196,0.15); color: #55efc4; }

.comparison-list { list-style: none; padding: 0; }
.comparison-list li {
    position: relative; padding: 8px 0 8px 28px;
    font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6;
}
.comparison-list li::before {
    content: ''; position: absolute; left: 0; top: 14px;
    width: 14px; height: 14px; border-radius: 50%;
}
.comp-bad::before { background: rgba(255,107,107,0.2); border: 2px solid rgba(255,107,107,0.4); }
.comp-good::before { background: rgba(85,239,196,0.2); border: 2px solid rgba(85,239,196,0.4); }

.comparison-vs-divider {
    display: flex; align-items: center; justify-content: center;
    padding-top: 60px;
}
.comparison-vs-divider span {
    padding: 8px 14px; border-radius: var(--radius-full);
    background: var(--accent-gradient);
    font-family: var(--font-display); font-size: 0.8rem; font-weight: 800;
    color: white; letter-spacing: 0.05em;
}

/* ============================================
   CONSIDERATIONS
   ============================================ */
.considerations-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.consideration-card {
    padding: 28px 24px;
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    transition: var(--transition-normal);
}
.consideration-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-md); }
.consideration-icon { font-size: 2rem; margin-bottom: 12px; }

/* Leap year checker */
.leap-year-checker {
    margin-top: 16px; padding: 14px; border-radius: var(--radius-md);
    background: rgba(255,255,255,0.02); border: 1px solid var(--border);
}
.leap-check-label { font-size: 0.78rem; font-weight: 500; color: var(--text-muted); margin-bottom: 8px; }
.leap-check-row { display: flex; gap: 8px; }
.leap-input {
    flex: 1; padding: 8px 10px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-family: var(--font-primary); font-size: 0.85rem;
    outline: none; transition: var(--transition-normal);
}
.leap-input:focus { border-color: var(--accent-1); }
.leap-input::-webkit-inner-spin-button,
.leap-input::-webkit-outer-spin-button { -webkit-appearance: none; }
.leap-input { -moz-appearance: textfield; }
.leap-check-btn {
    padding: 8px 14px; background: var(--accent-gradient);
    border: none; border-radius: var(--radius-sm);
    color: white; font-size: 0.8rem; font-weight: 600;
    cursor: pointer; transition: var(--transition-normal);
}
.leap-check-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(108,92,231,0.3); }
.leap-result {
    margin-top: 8px; font-size: 0.82rem; font-weight: 500;
    min-height: 1.2em;
}
.leap-result.is-leap { color: #55efc4; }
.leap-result.not-leap { color: #ff6b6b; }

/* ============================================
   PRIVACY
   ============================================ */
.privacy-section {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
}
.privacy-visual { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.privacy-shield { text-align: center; }
.shield-icon {
    width: 80px; height: 80px; border-radius: 50%;
    background: rgba(85,239,196,0.1); border: 2px solid rgba(85,239,196,0.2);
    display: flex; align-items: center; justify-content: center;
    color: #55efc4; margin: 0 auto 8px;
    animation: shieldPulse 3s ease-in-out infinite;
}
@keyframes shieldPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(85,239,196,0.2); }
    50% { box-shadow: 0 0 0 12px rgba(85,239,196,0); }
}
.shield-label {
    font-family: var(--font-display); font-size: 0.85rem; font-weight: 700;
    color: #55efc4;
}

.privacy-flow {
    display: flex; align-items: center; gap: 12px; flex-wrap: wrap; justify-content: center;
}
.pf-node {
    padding: 8px 16px; border-radius: var(--radius-sm);
    font-size: 0.78rem; font-weight: 600;
}
.pf-your { background: rgba(108,92,231,0.1); border: 1px solid rgba(108,92,231,0.2); color: var(--accent-1-light); }
.pf-calc { background: rgba(0,206,201,0.1); border: 1px solid rgba(0,206,201,0.2); color: var(--accent-2); }
.pf-server { background: rgba(255,107,107,0.1); border: 1px solid rgba(255,107,107,0.2); color: #ff6b6b; opacity: 0.5; }
.pf-arrow { font-size: 1.2rem; color: #55efc4; }
.pf-blocked {
    display: flex; align-items: center; gap: 6px; opacity: 0.6;
}
.pf-x {
    width: 24px; height: 24px; border-radius: 50%;
    background: rgba(255,107,107,0.2); color: #ff6b6b;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem; font-weight: 700;
}

/* ============================================
   RELATIONSHIPS
   ============================================ */
.relationships-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.rel-content-block {
    padding: 28px; background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
}

/* Age gap chart */
.age-gap-chart { margin-top: 16px; }
.chart-bar-row {
    display: grid; grid-template-columns: 140px 1fr 60px;
    gap: 10px; align-items: center; margin-bottom: 10px;
}
.chart-country { font-size: 0.82rem; color: var(--text-secondary); }
.chart-bar-track { height: 14px; background: rgba(255,255,255,0.04); border-radius: 7px; overflow: hidden; }
.chart-bar-fill {
    height: 100%; border-radius: 7px;
    background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
    transition: width 1s cubic-bezier(0.4,0,0.2,1);
}
.chart-value {
    font-size: 0.82rem; font-weight: 600;
    font-family: var(--font-display); color: var(--accent-1-light);
    text-align: right;
}

/* Half+7 calculator */
.half-plus-7 {
    margin-top: 16px; padding: 16px; border-radius: var(--radius-md);
    background: rgba(255,255,255,0.02); border: 1px solid var(--border);
}
.hp7-title {
    font-family: var(--font-display); font-size: 0.85rem; font-weight: 600;
    color: var(--accent-1-light); margin-bottom: 12px;
}
.hp7-input-row {
    display: flex; align-items: center; gap: 10px; margin-bottom: 8px;
}
.hp7-input-row label { font-size: 0.82rem; color: var(--text-secondary); white-space: nowrap; }
.hp7-input {
    width: 80px; padding: 8px 10px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-family: var(--font-primary); font-size: 0.85rem;
    outline: none; transition: var(--transition-normal);
}
.hp7-input:focus { border-color: var(--accent-1); }
.hp7-input::-webkit-inner-spin-button,
.hp7-input::-webkit-outer-spin-button { -webkit-appearance: none; }
.hp7-input { -moz-appearance: textfield; }
.hp7-result {
    font-size: 0.85rem; min-height: 1.4em;
    color: var(--accent-2); font-weight: 500;
}

/* ============================================
   USES
   ============================================ */
.uses-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.use-card {
    padding: 24px; background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    transition: var(--transition-normal);
}
.use-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-md); }
.use-card-icon { font-size: 1.6rem; display: block; margin-bottom: 12px; }
.use-card h3 {
    font-family: var(--font-display); font-size: 0.95rem; font-weight: 600;
    margin-bottom: 8px;
}
.use-card p { font-size: 0.82rem; margin-bottom: 0; }

/* ============================================
   FAQ
   ============================================ */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    margin-bottom: 8px; overflow: hidden;
    background: var(--bg-card); backdrop-filter: blur(20px);
    transition: var(--transition-normal);
}
.faq-item:hover { border-color: var(--border-hover); }
.faq-item.open { border-color: rgba(108,92,231,0.25); }

.faq-question {
    width: 100%; display: flex; align-items: center; justify-content: space-between;
    padding: 18px 24px; background: none; border: none;
    color: var(--text-primary); font-family: var(--font-primary);
    font-size: 0.95rem; font-weight: 500; text-align: left;
    cursor: pointer; gap: 16px; transition: var(--transition-normal);
}
.faq-question:hover { color: var(--accent-1-light); }

.faq-chevron {
    flex-shrink: 0; color: var(--text-muted);
    transition: transform 0.3s ease;
}
.faq-item.open .faq-chevron { transform: rotate(180deg); color: var(--accent-1-light); }

.faq-answer {
    max-height: 0; overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1), padding 0.3s ease;
    padding: 0 24px;
}
.faq-item.open .faq-answer { max-height: 400px; padding: 0 24px 20px; }
.faq-answer p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

/* ============================================
   FINAL THOUGHTS
   ============================================ */
.final-thoughts-card {
    max-width: 800px; margin: 0 auto;
    padding: 36px; background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    position: relative; overflow: hidden;
}
.final-thoughts-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: var(--accent-gradient);
}
.final-cta {
    margin-top: 24px; text-align: center;
}
.cta-btn { display: inline-flex; }

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    position: relative; z-index: 1;
    border-top: 1px solid var(--border);
    padding: 60px 0 32px;
    background: rgba(10,10,15,0.8);
}

.footer-grid {
    display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px;
    margin-bottom: 40px;
}

.footer-logo { margin-bottom: 14px; }

.footer-brand-desc {
    font-size: 0.85rem; color: var(--text-muted); line-height: 1.6;
    max-width: 280px;
}

.footer-heading {
    font-family: var(--font-display); font-size: 0.85rem; font-weight: 600;
    color: var(--text-primary); margin-bottom: 16px;
    text-transform: uppercase; letter-spacing: 0.05em;
}

.footer-link {
    display: block; font-size: 0.85rem; color: var(--text-muted);
    padding: 5px 0; transition: var(--transition-fast);
}
.footer-link:hover { color: var(--accent-1-light); transform: translateX(3px); }

.lang-switcher {
    position: relative;
    display: inline-flex;
}

.lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.04);
    color: var(--text-secondary);
    padding: 9px 12px;
    cursor: pointer;
    transition: var(--transition-normal);
}

.lang-btn:hover,
.lang-btn[aria-expanded="true"] {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: rgba(255,255,255,0.07);
}

.lang-dropdown {
    position: absolute;
    left: 0;
    bottom: calc(100% + 10px);
    width: 220px;
    max-height: 280px;
    overflow: auto;
    display: none;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: rgba(18,18,30,0.98);
    box-shadow: var(--shadow-md);
    z-index: 120;
}

.lang-dropdown.open {
    display: grid;
    gap: 4px;
}

.lang-option {
    display: block;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.88rem;
    transition: var(--transition-fast);
}

.lang-option:hover,
.lang-option.active {
    color: var(--text-primary);
    background: rgba(108,92,231,0.14);
}

.footer-bottom {
    border-top: 1px solid var(--border); padding-top: 24px;
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
}
.footer-bottom p { font-size: 0.78rem; color: var(--text-muted); }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes countUp { from { opacity: 0; transform: scale(0.5); } to { opacity: 1; transform: scale(1); } }
.animate-count { animation: countUp 0.4s ease both; }

/* Scroll animations */
.scroll-reveal {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.scroll-reveal.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
    .main-nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .content-intro-grid { grid-template-columns: 1fr; }
    .formula-section { grid-template-columns: 1fr; }
    .year-formula-section { grid-template-columns: 1fr; }
    .manual-vs-calc { grid-template-columns: 1fr; }
    .comparison-vs-divider { padding-top: 0; }
    .comparison-vs-divider span { margin: 12px auto; }
    .privacy-section { grid-template-columns: 1fr; }
    .relationships-grid { grid-template-columns: 1fr; }
    .considerations-grid { grid-template-columns: 1fr; }
    .why-use-grid { grid-template-columns: 1fr; }
    .specialty-links { grid-template-columns: 1fr; }
    .more-calculators-grid { grid-template-columns: 1fr; }
    .uses-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .how-to-step { grid-template-columns: 56px 1fr; }
    .step-visual { display: none; }
    .scenario-content { grid-template-columns: 1fr; }
    .interactive-flow-diagram { flex-direction: column; gap: 8px; }
    .ifd-column { flex-direction: row; justify-content: center; }
    .ifd-arrows { min-width: auto; min-height: 40px; }
    .ifd-arrow-svg { width: 60px; height: 60px; }
    .ifd-arrow-out { width: 60px; height: 40px; }
}

@media (max-width: 640px) {
    .hero-section { padding: calc(var(--header-height) + 40px) 0 60px; }
    .section { padding: 56px 0; }
    .calc-card { padding: 20px 16px; }
    .mode-tab { font-size: 0.78rem; padding: 8px 6px; }
    .mode-tab svg { display: none; }
    .person-row { flex-direction: column; }
    .person-avatar { margin-top: 0; }
    .date-inputs { grid-template-columns: 1fr 0.6fr 0.9fr; }
    .swap-divider { padding-left: 0; }
    .result-grid { grid-template-columns: 1fr 1fr; }
    .generation-content { grid-template-columns: 1fr; }
    .funfacts-grid { grid-template-columns: 1fr; }
    .more-calculators-card { padding: 22px 20px 24px; }
    .more-calculators-card a { font-size: 0.95rem; }
    .uses-grid { grid-template-columns: 1fr; }
    .actions { flex-direction: column; }
    .hero-stats { gap: 20px; }
    .hero-stat-divider { display: none; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .scenario-tabs { flex-direction: column; }
    .scenario-tab { width: 100%; }
    .edc-steps { gap: 8px; }
    .edc-step-body { flex-wrap: wrap; }
    .adf-container { flex-direction: column; }
    .fw-inputs { flex-direction: column; align-items: stretch; }
    .fw-minus { text-align: center; }
    .live-calc-inputs { flex-direction: column; }
    .cg-inputs { flex-direction: column; }
}

@media (max-width: 380px) {
    .date-inputs { grid-template-columns: 1fr; }
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ============================================
   SCENARIO PICKER (Why Use Section)
   ============================================ */
.scenario-picker { max-width: 900px; margin: 0 auto; }

.scenario-tabs {
    display: flex; gap: 8px; margin-bottom: 24px;
    justify-content: center;
}
.scenario-tab {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 24px; border: 1px solid var(--border);
    border-radius: var(--radius-full); background: rgba(255,255,255,0.02);
    color: var(--text-muted); font-family: var(--font-primary);
    font-size: 0.88rem; font-weight: 500; cursor: pointer;
    transition: var(--transition-normal);
}
.scenario-tab:hover {
    border-color: var(--border-hover); color: var(--text-secondary);
    background: rgba(255,255,255,0.04);
}
.scenario-tab.active {
    background: rgba(108,92,231,0.12); border-color: rgba(108,92,231,0.3);
    color: var(--accent-1-light);
}
.scenario-tab-icon { font-size: 1.2rem; }

.scenario-panel { display: none; animation: fadeIn 0.4s ease; }
.scenario-panel.active { display: block; }

.scenario-content {
    display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start;
}
.scenario-text {
    padding: 24px; background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
}
.scenario-text h3 {
    font-family: var(--font-display); font-size: 1.1rem; font-weight: 600;
    margin-bottom: 12px;
}

.scenario-demo-card {
    padding: 20px; background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
}
.scenario-demo-header {
    font-family: var(--font-display); font-size: 0.8rem; font-weight: 600;
    color: var(--accent-1-light); text-transform: uppercase;
    letter-spacing: 0.06em; margin-bottom: 16px;
}
.scenario-demo-persons { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }
.sdp-person {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.85rem; font-weight: 500; color: var(--text-secondary);
}
.sdp-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.sdp-date {
    margin-left: auto; font-size: 0.75rem; color: var(--text-muted);
    font-family: var(--font-display);
}
.scenario-demo-result {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 14px; background: rgba(108,92,231,0.08);
    border: 1px solid rgba(108,92,231,0.15); border-radius: var(--radius-md);
    margin-bottom: 12px;
}
.sdr-label { font-size: 0.78rem; color: var(--text-muted); }
.sdr-value {
    font-family: var(--font-display); font-size: 0.85rem;
    font-weight: 700; color: var(--accent-1-light);
}
.scenario-demo-bar { height: 6px; background: rgba(255,255,255,0.04); border-radius: 3px; overflow: hidden; }
.sdb-fill {
    height: 100%; border-radius: 3px;
    background: var(--accent-gradient);
    transition: width 1s cubic-bezier(0.4,0,0.2,1);
}

/* ============================================
   FORMULA WALKTHROUGH (Interactive)
   ============================================ */
.formula-walkthrough-card {
    padding: 24px; background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
}
.fw-title {
    font-family: var(--font-display); font-size: 0.85rem; font-weight: 600;
    color: var(--accent-1-light); text-transform: uppercase;
    letter-spacing: 0.06em; margin-bottom: 16px;
}
.fw-inputs {
    display: flex; align-items: flex-end; gap: 10px; margin-bottom: 20px;
}
.fw-input-group { flex: 1; }
.fw-input-group label {
    display: block; font-size: 0.72rem; font-weight: 500;
    color: var(--text-muted); text-transform: uppercase;
    letter-spacing: 0.05em; margin-bottom: 4px;
}
.fw-date-input {
    width: 100%; padding: 10px 12px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-family: var(--font-primary); font-size: 0.85rem;
    outline: none; transition: var(--transition-normal);
    color-scheme: dark;
}
.fw-date-input:focus { border-color: var(--accent-1); box-shadow: 0 0 0 3px rgba(108,92,231,0.1); }
.fw-minus {
    font-family: var(--font-display); font-size: 1.3rem;
    font-weight: 700; color: var(--text-muted); padding-bottom: 8px;
}

.fw-steps { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.fw-step {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 12px; border-radius: var(--radius-md);
    background: rgba(255,255,255,0.02); border: 1px solid var(--border);
    transition: var(--transition-normal);
}
.fw-step.active-step {
    border-color: rgba(108,92,231,0.3); background: rgba(108,92,231,0.06);
}
.fw-step-num {
    width: 24px; height: 24px; border-radius: 50%;
    background: rgba(108,92,231,0.15); color: var(--accent-1-light);
    font-size: 0.72rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.fw-step-label {
    font-size: 0.72rem; font-weight: 600; color: var(--accent-1-light);
    text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 2px;
}
.fw-step-calc {
    font-size: 0.82rem; color: var(--text-secondary);
    font-family: var(--font-display);
}
.fw-step-calc strong { color: var(--accent-2); }

.fw-result {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 16px; background: var(--accent-gradient);
    border-radius: var(--radius-md);
}
.fw-result-label { font-size: 0.82rem; color: rgba(255,255,255,0.7); }
.fw-result-value {
    font-family: var(--font-display); font-size: 1rem;
    font-weight: 700; color: white;
}

/* ============================================
   ERROR DEMO (Manual Fails Section)
   ============================================ */
.error-demo-section {
    margin-top: 40px; max-width: 700px; margin-left: auto; margin-right: auto;
}
.error-demo-title {
    display: flex; align-items: center; gap: 10px;
    font-family: var(--font-display); font-size: 1rem; font-weight: 600;
    color: var(--text-primary); margin-bottom: 16px;
}
.error-demo-title svg { color: #fdcb6e; }

.error-demo-card {
    padding: 24px; background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
}
.edc-problem { margin-bottom: 20px; }
.edc-label {
    font-size: 0.9rem; font-weight: 600; color: var(--text-primary);
    padding: 12px 16px; background: rgba(253,203,110,0.08);
    border: 1px solid rgba(253,203,110,0.15); border-radius: var(--radius-md);
}

.edc-steps { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.edc-step {
    padding: 14px; border-radius: var(--radius-md);
    background: rgba(255,255,255,0.02); border: 1px solid var(--border);
    transition: var(--transition-normal);
}
.edc-step.correct { border-color: rgba(85,239,196,0.3); background: rgba(85,239,196,0.04); }
.edc-step.wrong { border-color: rgba(255,107,107,0.3); background: rgba(255,107,107,0.04); }

.edc-step-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 8px;
}
.edc-step-num {
    font-family: var(--font-display); font-size: 0.8rem;
    font-weight: 600; color: var(--text-secondary);
}
.edc-step-status { font-size: 0.78rem; font-weight: 600; }
.edc-step-status.correct-status { color: #55efc4; }
.edc-step-status.wrong-status { color: #ff6b6b; }

.edc-step-body {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.85rem; color: var(--text-secondary);
    font-family: var(--font-display);
}
.edc-input {
    width: 70px; padding: 6px 10px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-family: var(--font-display); font-size: 0.85rem;
    outline: none; transition: var(--transition-normal);
    text-align: center;
}
.edc-input:focus { border-color: var(--accent-1); }
.edc-input::-webkit-inner-spin-button,
.edc-input::-webkit-outer-spin-button { -webkit-appearance: none; }
.edc-input { -moz-appearance: textfield; }

.edc-check-btn {
    padding: 6px 14px; background: var(--accent-gradient);
    border: none; border-radius: var(--radius-sm);
    color: white; font-size: 0.78rem; font-weight: 600;
    cursor: pointer; transition: var(--transition-normal);
}
.edc-check-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(108,92,231,0.3); }

.edc-step-hint {
    margin-top: 8px; font-size: 0.78rem; color: var(--text-muted);
    min-height: 1.2em; line-height: 1.4;
}

.edc-answer {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 16px; background: rgba(85,239,196,0.08);
    border: 1px solid rgba(85,239,196,0.15); border-radius: var(--radius-md);
    opacity: 0.4; transition: var(--transition-normal);
}
.edc-answer.revealed { opacity: 1; }
.edc-answer-label { font-size: 0.82rem; color: var(--text-muted); }
.edc-answer-value {
    font-family: var(--font-display); font-size: 0.95rem;
    font-weight: 700; color: #55efc4;
}

/* ============================================
   ANIMATED DATA FLOW (Privacy Section)
   ============================================ */
.animated-data-flow { width: 100%; }
.adf-container {
    display: flex; align-items: center; justify-content: center;
    gap: 0;
}
.adf-node {
    display: flex; flex-direction: column; align-items: center;
    gap: 6px; padding: 16px 12px; min-width: 100px;
    text-align: center;
}
.adf-node-icon { color: var(--text-secondary); }
.adf-node-text {
    font-size: 0.78rem; font-weight: 600;
    color: var(--text-primary);
}
.adf-secure-badge {
    font-size: 0.68rem; color: #55efc4; font-weight: 600;
    padding: 2px 8px; border-radius: var(--radius-full);
    background: rgba(85,239,196,0.1); border: 1px solid rgba(85,239,196,0.2);
}
.adf-no-access {
    font-size: 0.68rem; color: #ff6b6b; font-weight: 600;
    padding: 2px 8px; border-radius: var(--radius-full);
    background: rgba(255,107,107,0.1); border: 1px solid rgba(255,107,107,0.2);
}

.adf-connection {
    display: flex; align-items: center; justify-content: center;
    flex-direction: column; gap: 4px; padding: 0 8px;
    position: relative; min-width: 80px;
}
.adf-conn-label {
    font-size: 0.68rem; color: var(--text-muted);
    white-space: nowrap;
}

.adf-connected { position: relative; }
.adf-connected::before {
    content: ''; position: absolute; top: 50%; left: 0; right: 0;
    height: 2px; background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
    transform: translateY(-8px);
}
.adf-data-packet {
    position: absolute; top: 50%; transform: translateY(-10px);
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent-2);
    animation: dataPacketFlow 2s ease-in-out infinite;
}
.adf-packet-1 { animation-delay: 0s; }
.adf-packet-2 { animation-delay: 1s; }

@keyframes dataPacketFlow {
    0% { left: 0; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { left: calc(100% - 8px); opacity: 0; }
}

.adf-blocked { position: relative; }
.adf-blocked::before {
    content: ''; position: absolute; top: 50%; left: 0; right: 0;
    height: 2px; background: rgba(255,107,107,0.2);
    transform: translateY(-8px);
    background-image: repeating-linear-gradient(
        90deg, rgba(255,107,107,0.3) 0px, rgba(255,107,107,0.3) 6px,
        transparent 6px, transparent 12px
    );
}
.adf-block-x {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -14px);
    width: 20px; height: 20px; border-radius: 50%;
    background: rgba(255,107,107,0.2); color: #ff6b6b;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.7rem; font-weight: 700; z-index: 1;
    animation: blockPulse 2s ease-in-out infinite;
}
@keyframes blockPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255,107,107,0.3); }
    50% { box-shadow: 0 0 0 6px rgba(255,107,107,0); }
}

.adf-server-icon { opacity: 0.4; }

/* ============================================
   AGE COMPATIBILITY GAUGE
   ============================================ */
.compatibility-gauge {
    margin-top: 20px; padding: 20px;
    background: rgba(255,255,255,0.02); border: 1px solid var(--border);
    border-radius: var(--radius-xl);
}
.cg-title {
    font-family: var(--font-display); font-size: 0.85rem; font-weight: 600;
    color: var(--accent-1-light); margin-bottom: 14px;
}
.cg-inputs {
    display: flex; gap: 12px; margin-bottom: 16px;
}
.cg-input-group { flex: 1; }
.cg-input-group label {
    display: block; font-size: 0.72rem; font-weight: 500;
    color: var(--text-muted); text-transform: uppercase;
    letter-spacing: 0.05em; margin-bottom: 4px;
}
.cg-input {
    width: 100%; padding: 8px 12px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-family: var(--font-primary); font-size: 0.85rem;
    outline: none; transition: var(--transition-normal);
}
.cg-input:focus { border-color: var(--accent-1); box-shadow: 0 0 0 3px rgba(108,92,231,0.1); }
.cg-input::-webkit-inner-spin-button,
.cg-input::-webkit-outer-spin-button { -webkit-appearance: none; }
.cg-input { -moz-appearance: textfield; }

.cg-visual {
    display: flex; justify-content: center; margin-bottom: 12px;
}
.cg-ring { width: 140px; height: 140px; }
.cg-ring-fill {
    transition: stroke-dashoffset 1s cubic-bezier(0.4,0,0.2,1);
}

.cg-details {
    font-size: 0.82rem; color: var(--text-secondary);
    text-align: center; min-height: 1.4em;
    line-height: 1.5;
}
.cg-details .cg-compatible { color: #55efc4; font-weight: 600; }
.cg-details .cg-incompatible { color: #ff6b6b; font-weight: 600; }
.cg-details .cg-range { color: var(--accent-1-light); font-weight: 600; }

/* ============================================
   USE CARD ICON RINGS
   ============================================ */
.use-card-icon-wrap {
    position: relative; width: 56px; height: 56px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 14px;
}
.use-card-icon-wrap .use-card-icon {
    font-size: 1.6rem; position: relative; z-index: 1;
    margin-bottom: 0;
}
.use-icon-ring {
    position: absolute; inset: 0; border-radius: 50%;
    border: 2px solid rgba(108,92,231,0.15);
    transition: var(--transition-normal);
}
.use-card:hover .use-icon-ring {
    border-color: rgba(108,92,231,0.4);
    box-shadow: 0 0 16px rgba(108,92,231,0.15);
    transform: scale(1.1);
}
.use-card:hover .use-card-icon {
    animation: iconBounce 0.4s ease;
}
@keyframes iconBounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* ============================================
   EXAMPLE TIMELINES
   ============================================ */
.example-timeline {
    margin-top: 16px; padding: 16px 0;
}
.example-timeline-track {
    position: relative; height: 6px;
    background: rgba(255,255,255,0.05); border-radius: 3px;
    margin: 30px 16px 36px;
}
.example-timeline-fill {
    position: absolute; top: 0; left: 0;
    height: 100%; border-radius: 3px;
    background: var(--accent-gradient);
    transition: width 1.2s cubic-bezier(0.4,0,0.2,1);
}
.example-timeline-point {
    position: absolute; top: 50%; transform: translate(-50%, -50%);
    width: 14px; height: 14px; border-radius: 50%;
    border: 3px solid; z-index: 2;
    background: var(--bg-primary);
}
.etp-1 { border-color: var(--person-1); }
.etp-2 { border-color: var(--person-2); }

.example-timeline-labels {
    position: absolute; top: 100%; left: 0; right: 0;
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 12px;
}
.etl-1, .etl-2 {
    font-size: 0.72rem; font-weight: 600;
    font-family: var(--font-display); color: var(--text-muted);
    position: relative;
}
.etl-1 { color: var(--person-1); }
.etl-2 { color: var(--person-2); }
.etl-gap {
    position: absolute; left: 50%; transform: translateX(-50%);
    font-size: 0.72rem; font-weight: 600; color: var(--accent-1-light);
    background: rgba(108,92,231,0.1); border: 1px solid rgba(108,92,231,0.2);
    padding: 2px 10px; border-radius: var(--radius-full);
    white-space: nowrap;
}

/* ============================================
   NAV CONTACT HIGHLIGHT
   ============================================ */
.nav-contact {
    background: rgba(108,92,231,0.1);
    border: 1px solid rgba(108,92,231,0.2);
    color: var(--accent-1-light) !important;
    border-radius: var(--radius-sm);
}
.nav-contact:hover {
    background: rgba(108,92,231,0.2) !important;
    border-color: rgba(108,92,231,0.4) !important;
    color: white !important;
}

/* ============================================
   MOBILE MENU CLOSE BUTTON
   ============================================ */
.mobile-menu-close {
    position: absolute; top: 16px; right: 16px;
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    color: var(--text-secondary); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition-normal);
}
.mobile-menu-close:hover {
    background: rgba(255,107,107,0.1);
    border-color: rgba(255,107,107,0.3);
    color: #ff6b6b;
}
.mobile-menu-overlay { position: relative; }

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-layout {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 32px;
    align-items: start;
    max-width: 960px;
    margin: 0 auto;
}

.contact-form-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-lg);
}

.contact-field {
    margin-bottom: 20px;
}

.contact-label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-input,
.contact-textarea {
    width: 100%;
    padding: 11px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-normal);
    resize: none;
}
.contact-input::placeholder,
.contact-textarea::placeholder { color: var(--text-muted); }
.contact-input:hover,
.contact-textarea:hover { border-color: var(--border-hover); background: var(--bg-input-focus); }
.contact-input:focus,
.contact-textarea:focus {
    border-color: var(--accent-1);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 3px rgba(108,92,231,0.1);
}

.contact-actions { margin-top: 8px; }

.contact-submit {
    width: 100%;
    justify-content: center;
}
.contact-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.contact-status {
    margin-top: 14px;
    font-size: 0.85rem;
    font-weight: 500;
    min-height: 1.4em;
    text-align: center;
    padding: 0 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
}
.contact-status.status-sending {
    color: var(--text-muted);
}
.contact-status.status-success {
    color: #55efc4;
    background: rgba(85,239,196,0.08);
    border: 1px solid rgba(85,239,196,0.15);
    padding: 10px 14px;
}
.contact-status.status-error {
    color: var(--error);
    background: rgba(255,107,107,0.08);
    border: 1px solid rgba(255,107,107,0.15);
    padding: 10px 14px;
}

.contact-fallback {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    font-size: 0.82rem !important;
    color: var(--text-muted) !important;
    text-align: center;
    margin-bottom: 0 !important;
}
.contact-email-link {
    color: var(--accent-1-light);
    text-decoration: underline;
    text-decoration-color: rgba(162,155,254,0.3);
    transition: var(--transition-fast);
}
.contact-email-link:hover {
    color: white;
    text-decoration-color: white;
}

/* Contact Info Side */
.contact-info-side {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-info-card {
    padding: 20px 22px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    transition: var(--transition-normal);
}
.contact-info-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
.contact-info-icon {
    font-size: 1.6rem;
    margin-bottom: 10px;
}
.contact-info-card h3 {
    font-size: 0.95rem !important;
    font-weight: 600;
    margin-bottom: 6px;
}
.contact-info-card p {
    font-size: 0.82rem !important;
    margin-bottom: 0 !important;
}

/* ============================================
   FOOTER SOCIAL ICONS
   ============================================ */
.footer-social {
    display: flex;
    gap: 10px;
    margin-top: 18px;
    flex-wrap: wrap;
}

.social-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: var(--transition-normal);
}
.social-icon:hover {
    background: rgba(108,92,231,0.12);
    border-color: rgba(108,92,231,0.3);
    color: var(--accent-1-light);
    transform: translateY(-2px);
}

/* ============================================
   RESPONSIVE — CONTACT
   ============================================ */
@media (max-width: 900px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .contact-form-card {
        padding: 20px 16px;
    }
    .contact-info-side {
        flex-direction: row;
        flex-wrap: wrap;
    }
    .contact-info-card {
        flex: 1;
        min-width: 140px;
    }
}





/* New Footer Layout */
.new-footer-layout {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
    gap: 40px;
}
@media (max-width: 992px) {
    .new-footer-layout {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 576px) {
    .new-footer-layout {
        grid-template-columns: 1fr;
    }
}

/* Language Grid Styling for Footer */
.lang-group {
    max-width: 100%;
}
.lang-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    margin-top: 20px;
    max-width: 320px;
}
.lang-option {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-secondary, #9898b0);
    padding: 10px 0;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    text-align: center;
    transition: var(--transition-fast, all 0.15s ease);
    font-family: var(--font-display), inherit;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    justify-content: center;
}
.lang-option:hover {
    border-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.04);
}
.lang-option.active {
    border: 2px solid var(--accent-2, #00cec9);
    color: var(--accent-2, #00cec9);
    background: transparent;
}

.contact-with-icon {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.contact-with-icon svg {
    color: var(--primary, #6c5ce7);
}