:root {
    --primary: #2563EB; /* Vizancia Blue */
    --primary-light: #3B82F6;
    --primary-dark: #1D4ED8;
    --accent: #1CB0F6; /* Duolingo Blue */
    --accent-light: #51C6F8;
    --accent-dark: #1899D6;
    --accent-warm: #FFC800; /* Duolingo Yellow */
    --accent-warm-dark: #D4A300;
    --accent-red: #FF4B4B; /* Duolingo Red */
    --accent-red-dark: #EA2B2B;
    --bg-dark: #FFFFFF; /* White background */
    --bg-surface: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F7F7F7;
    --text-primary: #4B4B4B; /* Duo Dark Gray */
    --text-secondary: #777777; /* Duo Light Gray */
    --text-muted: #AFAFAF;
    --border: #E5E5E5; /* Duo border */
    --border-hover: #E5E5E5;
    --gradient-1: linear-gradient(135deg, #2563EB 0%, #1CB0F6 100%);
    --gradient-2: linear-gradient(135deg, #1CB0F6 0%, #1899D6 100%);
    --gradient-3: linear-gradient(135deg, #FFC800 0%, #FF4B4B 100%);
    --shadow-glow: 0 4px 0 #E5E5E5;
    --radius: 16px;
    --radius-sm: 12px;
    --radius-lg: 24px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
}

/* ── Canvas Background Removed ── */

/* ── Navigation ── */
nav {
    position: fixed; top:0; width:100%; z-index:100;
    padding: 16px 0;
    backdrop-filter: blur(20px) saturate(180%);
    background: rgba(255,255,255,0.9);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s, box-shadow 0.3s;
}
nav.scrolled {
    background: rgba(255,255,255,0.98);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}
.nav-inner {
    max-width: 1200px; margin:0 auto; padding:0 24px;
    display:flex; justify-content:space-between; align-items:center;
}
.logo {
    font-size: 1.7rem; font-weight: 900; letter-spacing: -0.5px;
    color: var(--primary);
}
.nav-links { display:flex; gap:32px; align-items:center; }
.nav-links a {
    color: var(--text-secondary); text-decoration:none;
    font-size: 0.875rem; font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-cta {
    padding: 10px 24px !important; font-size: 0.85rem !important;
    background: var(--primary) !important;
    color: white !important;
    border-radius: var(--radius) !important;
    font-weight: 800 !important;
    text-transform: uppercase;
    border-bottom: 4px solid var(--primary-dark);
    transition: transform 0.1s, border-bottom-width 0.1s !important;
}
.nav-cta:hover {
    transform: translateY(2px) !important;
    border-bottom-width: 2px !important;
}
.nav-cta:active {
    transform: translateY(4px) !important;
    border-bottom-width: 0px !important;
}

/* Mobile Menu */
.menu-toggle {
    display: none; background:none; border:none; cursor:pointer;
    width:32px; height:32px; position:relative; z-index:101;
}
.menu-toggle span {
    display:block; width:24px; height:2px; background:var(--text-primary);
    transition: transform 0.3s, opacity 0.3s;
    position:absolute; left:4px;
}
.menu-toggle span:nth-child(1) { top: 8px; }
.menu-toggle span:nth-child(2) { top: 15px; }
.menu-toggle span:nth-child(3) { top: 22px; }
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg); top:15px; }
.menu-toggle.active span:nth-child(2) { opacity:0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg); top:15px; }

/* ── Hero ── */
.hero {
    position:relative; z-index:1; min-height:100vh;
    display:flex; align-items:center; justify-content:center;
    text-align:center; padding: 140px 24px 100px;
}
.hero-content { max-width: 800px; }
.hero-badge {
    display:inline-flex; align-items:center; gap:8px;
    padding: 10px 24px;
    background: #FFFFFF;
    border: 2px solid var(--border);
    border-bottom: 4px solid var(--border);
    border-radius: 100px;
    font-size: 0.9rem; font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 32px;
}
.sandbox-badge-hero {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 24px;
    background: linear-gradient(135deg, #10B981, #14B8A6);
    border: 2px solid #059669;
    border-bottom: 4px solid #047857;
    border-radius: 100px;
    font-size: 0.85rem; font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 16px;
    animation: sandbox-pulse 2.5s ease-in-out infinite;
    transition: transform 0.1s, border-bottom-width 0.1s;
    cursor: pointer;
}
.sandbox-badge-hero:hover {
    transform: translateY(2px);
    border-bottom-width: 2px;
}
.sandbox-badge-hero:active {
    transform: translateY(4px);
    border-bottom-width: 0px;
}
@keyframes sandbox-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    50% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0.15); }
}
.hero h1 {
    font-size: clamp(2.8rem, 7vw, 4.5rem);
    font-weight: 900; line-height: 1.05;
    letter-spacing: -2px; margin-bottom: 24px;
    text-transform: lowercase;
}
.gradient-text {
    color: var(--accent);
}
.hero p {
    font-size: 1.2rem; color: var(--text-secondary);
    line-height: 1.7; margin-bottom: 20px; max-width: 560px; margin-left:auto; margin-right:auto;
}

/* Hero Stats */
.hero-stats {
    display:flex; justify-content:center; gap:48px;
    margin-bottom: 40px;
}
.hero-stat { text-align:center; }
.hero-stat .num {
    font-size: 2rem; font-weight: 800;
    color: var(--primary);
}
.hero-stat .label {
    font-size: 0.75rem; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600;
}

.cta-group {
    display:flex; gap:16px; justify-content:center; flex-wrap:wrap;
}
.btn-primary {
    display:inline-flex; align-items:center; justify-content:center; gap:10px;
    padding: 18px 40px;
    background: var(--primary); color:white;
    text-decoration:none; border-radius: var(--radius);
    font-weight: 800; font-size: 1.1rem; text-transform: uppercase;
    border-bottom: 4px solid var(--primary-dark);
    transition: transform 0.1s, border-bottom-width 0.1s, background 0.2s;
}
.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(2px);
    border-bottom-width: 2px;
}
.btn-primary:active {
    transform: translateY(4px);
    border-bottom-width: 0px;
}
.btn-secondary {
    display:inline-flex; align-items:center; justify-content:center; gap:10px;
    padding: 18px 40px;
    background: var(--bg-card); color: var(--accent);
    text-decoration:none; border-radius: var(--radius);
    font-weight: 800; font-size: 1.1rem; text-transform: uppercase;
    border: 2px solid var(--border);
    border-bottom: 4px solid var(--border);
    transition: transform 0.1s, border-bottom-width 0.1s, background 0.2s;
}
.btn-secondary:hover {
    background: var(--bg-card-hover);
    transform: translateY(2px);
    border-bottom-width: 2px;
}
.btn-secondary:active {
    transform: translateY(4px);
    border-bottom-width: 0px;
}

/* ── Google Play "Coming Soon" Hyperlink ── */
.play-soon-link {
    display: inline-block;
    margin-top: 14px;
    font-size: 0.9rem; font-weight: 700;
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 1px dashed var(--text-muted);
    padding-bottom: 2px;
    transition: color 0.2s, border-color 0.2s;
}
.play-soon-link:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
}
.play-soon-link-cta {
    margin-top: 20px;
}

/* ── Sections ── */
section {
    position:relative; z-index:1;
    max-width: 1200px; margin:0 auto;
    padding: 120px 24px;
}
.section-label {
    font-size: 0.8rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 3px;
    color: var(--accent); margin-bottom: 16px;
}
.section-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 800; letter-spacing: -1.5px;
    margin-bottom: 20px; line-height: 1.1;
}
.section-subtitle {
    font-size: 1.1rem; color: var(--text-secondary);
    line-height: 1.7; max-width: 600px; margin-bottom: 64px;
}

/* ── Alternating Feature Sections ── */
.section-divider {
    width: 100%; border: none;
    border-top: 2px solid var(--border);
    margin: 0;
}
.feature-section {
    max-width: 1000px; margin: 0 auto;
    padding: 100px 24px;
    display: flex; align-items: center; gap: 60px;
}
.feature-section.reverse { flex-direction: row-reverse; }
.feature-section .text-col { flex: 1; min-width: 0; }
.feature-section .illust-col {
    flex: 0 0 380px; display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.feature-section .illust-col img {
    width: 100%; height: auto;
    max-height: 340px;
    object-fit: contain;
    filter: drop-shadow(0 8px 24px rgba(37, 99, 235, 0.1));
}
.feature-heading {
    font-size: 2rem; font-weight: 900;
    color: var(--text-primary); line-height: 1.15;
    margin-bottom: 20px;
}
.feature-heading .hl { color: var(--primary); }
.feature-heading .hl-cyan { color: var(--accent); }
.feature-heading .hl-amber { color: var(--accent-warm); }
.feature-heading .hl-red { color: var(--accent-red); }
.feature-body {
    font-size: 1.1rem; color: var(--text-secondary);
    line-height: 1.7; font-weight: 600; max-width: 440px;
}
.feature-chips {
    display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px;
}
.chip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 18px; background: var(--bg-card);
    border: 2px solid var(--border); border-radius: 100px;
    font-size: 0.85rem; font-weight: 800; color: var(--text-primary);
    box-shadow: 0 2px 0 var(--border);
}

/* ── Games Grid ── */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}
.game-card {
    display: flex; align-items: center; gap: 16px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-bottom: 4px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    transition: transform 0.1s, border-bottom-width 0.1s;
}
.game-card:hover {
    transform: translateY(2px);
    border-bottom-width: 2px;
}
.game-card:active {
    transform: translateY(4px);
    border-bottom-width: 0px;
}
.game-icon {
    font-size: 2rem; flex-shrink: 0;
    width: 56px; height: 56px;
    display: flex; align-items: center; justify-content: center;
    background: var(--bg-card-hover);
    border-radius: var(--radius);
    border: 2px solid var(--border);
}
.game-card h4 { font-size: 1.05rem; font-weight: 800; margin-bottom: 2px; color: var(--text-primary); }
.game-card p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.4; font-weight: 600; }

/* ── Paths Grid ── */
.paths-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
}
.path-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-bottom: 4px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 20px; text-align: center;
    transition: transform 0.1s, border-bottom-width 0.1s;
}
.path-card:hover {
    transform: translateY(2px);
    border-bottom-width: 2px;
}
.path-card:active {
    transform: translateY(4px);
    border-bottom-width: 0px;
}
.path-emoji { font-size: 2.5rem; display:block; margin-bottom: 12px; }
.path-card h4 { font-size: 1rem; font-weight: 800; margin-bottom: 4px; color: var(--text-primary); }
.path-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.4; font-weight: 600; }

/* ── Duel Section ── */
.duel-section {
    background: var(--bg-card-hover);
}
.duel-grid {
    display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px;
}
.duel-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-bottom: 4px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 32px; text-align: center;
    transition: transform 0.1s, border-bottom-width 0.1s;
}
.duel-card:hover {
    transform: translateY(2px);
    border-bottom-width: 2px;
}
.duel-card:active {
    transform: translateY(4px);
    border-bottom-width: 0px;
}
.duel-card .duel-icon { font-size: 3rem; margin-bottom: 20px; display:block; }
.duel-card h3 { font-size: 1.25rem; font-weight: 800; margin-bottom: 10px; color: var(--text-primary); }
.duel-card p { color: var(--text-secondary); font-size: 1rem; line-height: 1.6; font-weight: 600; }

/* ── Stats Bar ── */
.stats-bar {
    display: flex; justify-content: center; gap: 64px;
    padding: 36px 24px;
    position: relative; z-index: 1;
    background: var(--bg-card-hover);
    border-top: 2px solid var(--border);
    border-bottom: 2px solid var(--border);
}
.stat-item { text-align: center; }
.stat-item .stat-num {
    font-size: 2.5rem; font-weight: 900;
    color: var(--primary);
}
.stat-item .stat-label {
    font-size: 0.9rem; color: var(--text-secondary);
    text-transform: uppercase; letter-spacing: 1.5px; font-weight: 800;
    margin-top: 4px;
}

/* ── Support & Legal ── */
.support-section { max-width: 800px; margin: 0 auto; padding: 120px 24px; position:relative; z-index:1; }
.support-section h2 { font-size: 2rem; font-weight: 800; margin-bottom: 16px; }
.support-section > p { color: var(--text-secondary); margin-bottom: 32px; line-height: 1.7; }
.support-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 32px; margin-bottom: 20px;
}
.support-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; }
.support-card p { color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; font-size: 0.95rem; }
.support-card a { color: var(--primary-light); text-decoration:none; }
.support-card a:hover { text-decoration: underline; }
.faq-item { margin-bottom: 16px; }
.faq-item strong { color: var(--text-primary); display:block; margin-bottom: 4px; }
.legal-section { max-width: 800px; margin:0 auto; padding: 80px 24px; position:relative; z-index:1; }
.legal-section h2 { font-size: 2rem; font-weight: 800; margin-bottom: 24px; }
.legal-section h3 { margin-top: 32px; margin-bottom: 12px; font-size: 1.1rem; }
.legal-section p, .legal-section li { color: var(--text-secondary); line-height: 1.8; margin-bottom: 12px; }
.legal-section ul { padding-left: 24px; }
.legal-section a { color: var(--primary-light); text-decoration:none; }
.legal-section a:hover { text-decoration: underline; }

/* ── Download CTA Section ── */
.download-cta-section {
    position: relative; z-index: 1;
    max-width: 1200px; margin: 0 auto;
    padding: 80px 24px 120px;
}
.cta-card {
    text-align: center;
    padding: 64px 48px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-bottom: 6px solid var(--border);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}
.cta-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 6px;
    background: var(--primary);
}
.cta-card h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800; letter-spacing: -1px;
    margin-bottom: 16px;
}
.cta-card p {
    font-size: 1.1rem; color: var(--text-secondary);
    max-width: 560px; margin: 0 auto 32px;
    line-height: 1.7;
}
.cta-features {
    display: flex; justify-content: center; gap: 20px;
    flex-wrap: wrap; margin-bottom: 40px;
}
.cta-features span {
    padding: 10px 20px;
    background: var(--bg-card-hover);
    border: 2px solid var(--border);
    border-radius: 100px;
    font-size: 0.9rem; font-weight: 800;
    color: var(--text-primary);
}
.btn-large {
    padding: 18px 40px !important;
    font-size: 1.1rem !important;
    box-shadow: 0 4px 0 var(--primary-dark) !important;
}

/* ── Footer ── */
footer {
    position:relative; z-index:1;
    border-top: 1px solid var(--border);
    padding: 48px 24px; text-align:center;
}
footer p { color: var(--text-muted); font-size: 0.85rem; }
.footer-links {
    margin-top: 16px; display: flex; justify-content: center; gap: 24px;
    flex-wrap: wrap;
}
.footer-links a {
    color: var(--text-secondary); text-decoration:none; font-size: 0.85rem;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--text-primary); }

/* ── Scroll Animations ── */
.reveal {
    opacity: 0; transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
    opacity: 1; transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 960px) {
    .feature-section, .feature-section.reverse { flex-direction: column; text-align: center; gap: 40px; }
    .feature-section .illust-col { flex: none; width: 100%; max-width: 320px; }
    .feature-body { max-width: 100%; }
    .feature-chips { justify-content: center; }
    .duel-grid { grid-template-columns: 1fr; }
    .stats-bar { gap: 40px; flex-wrap: wrap; }
    .hero-stats { gap: 32px; }
}
@media (max-width: 768px) {
    .nav-links { display:none; }
    .menu-toggle { display: block; z-index: 200; position: relative; }
    .feature-section .illust-col img { max-height: 280px; }
    .games-grid { grid-template-columns: 1fr; }
    .paths-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-stats { gap: 24px; }
    .hero-stat .num { font-size: 1.5rem; }
    .stats-bar { gap: 24px; padding: 40px 24px; }
    .stat-item .stat-num { font-size: 2rem; }
    section { padding: 80px 20px; }
}

/* Mobile menu overlay — triggered by body.menu-open */
body.menu-open #navbar {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    width: 100%; height: 100vh;
    backdrop-filter: none;
    background: #FFFFFF;
    z-index: 150;
    padding: 0;
}
body.menu-open .nav-inner {
    flex-direction: column;
    height: 100%;
    padding: 20px 24px;
}
body.menu-open .nav-links {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    flex: 1;
    width: 100%;
}
body.menu-open .nav-links a {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    padding: 14px 32px;
    background: var(--bg-card-hover);
    border: 2px solid var(--border);
    border-bottom: 4px solid var(--border);
    border-radius: 100px;
    min-width: 220px;
    text-align: center;
    transition: transform 0.1s, border-bottom-width 0.1s, background 0.15s;
}
body.menu-open .nav-links a:active {
    transform: translateY(3px);
    border-bottom-width: 1px;
    background: #E0E7FF;
}
body.menu-open .nav-links .nav-cta {
    margin-top: 6px;
    background: var(--primary) !important;
    color: white !important;
    border-color: var(--primary-dark) !important;
    border-bottom: 4px solid var(--primary-dark) !important;
}
body.menu-open .nav-links .nav-cta:active {
    transform: translateY(3px) !important;
    border-bottom-width: 1px !important;
}
@media (max-width: 480px) {
    .paths-grid { grid-template-columns: 1fr; }
    .hero h1 { letter-spacing: -1px; }
    .hero-stats { flex-wrap: wrap; gap: 16px; }
    footer { padding: 40px 16px 32px; }
    .footer-links { gap: 16px 20px; }
}

/* Prevent scroll when mobile menu is open */
body.menu-open {
    overflow: hidden;
}