/* ═══════════════════════════════════════════════════════════════════
   BASE.CSS – Common styles shared across all pages
   ═══════════════════════════════════════════════════════════════════ */

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

:root {
    --bg-light: #f5f5f3;
    --bg-card: #ffffff;
    --bg-section: #f0f7f9;
    --blue-pastel: #87d4e0;
    --blue-ocean: #4fa8ba;
    --blue-deep: #2c7a8a;
    --beige-sand: #d4c5b0;
    --coral-soft: #ff8c75;
    --text-dark: #1a2332;
    --text-muted: #5a6a7a;
    --nav-height: 64px;

    /* Accent colors - intense energy */
    --accent-hot: #FF006E;
    --accent-neon: #39FF14;
    --accent-electric: #FFDD00;
    --accent-cyber: #00F5FF;
    
    /* Nav transparent state colors */
    --nav-text-light: rgba(255, 255, 255, 0.95);
    --nav-logo-light: rgba(255, 255, 255, 0.98);
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
    font-family: 'Inter', sans-serif;
    font-weight: 300;
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
}

/* Film grain texture overlay - subtle underground aesthetic */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    animation: grain-pulse 4s ease-in-out infinite alternate;
}

@keyframes grain-pulse {
    0% {
        opacity: 0.02;
    }

    100% {
        opacity: 0.04;
    }
}

/* ─────────────────────────────────────────────
   SCROLLBAR
   ───────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--blue-pastel);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--blue-ocean);
}

/* ─────────────────────────────────────────────
   TEXT SELECTION
   ───────────────────────────────────────────── */
::selection {
    background: var(--blue-pastel);
    color: var(--text-dark);
}

::-moz-selection {
    background: var(--blue-pastel);
    color: var(--text-dark);
}

/* ─────────────────────────────────────────────
   SCREEN READER ONLY (keeps text for SEO)
   ───────────────────────────────────────────── */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ─────────────────────────────────────────────
   SKIP TO CONTENT LINK
   ───────────────────────────────────────────── */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    padding: 0.75rem 1.5rem;
    background: var(--blue-ocean);
    color: white;
    font-family: 'Oswald', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(94, 184, 197, 0.3);
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 1rem;
    outline: 3px solid var(--blue-ocean);
    outline-offset: 3px;
}

/* ─────────────────────────────────────────────
   NAV
   ───────────────────────────────────────────── */
nav {
    --nav-progress: 1;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2.5rem;
    background: rgba(255, 255, 255, calc(var(--nav-progress) * 0.95));
    border-bottom: 2px solid rgba(135, 212, 224, calc(var(--nav-progress) * 0.5));
    box-shadow: 0 2px 10px rgba(0, 0, 0, calc(var(--nav-progress) * 0.05));
}

.nav-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--nav-logo-light);
    letter-spacing: 4px;
    cursor: default;
    user-select: none;
    text-decoration: none;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    transition: color 0.4s ease, text-shadow 0.4s ease;
}

.beta-badge {
    display: inline-block;
    padding: 4px 10px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #fff;
    font-family: 'Oswald', sans-serif;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4), 0 0 12px rgba(59, 130, 246, 0.2);
    text-shadow: none;
    animation: beta-pulse 2s ease-in-out infinite;
}

.genius-badge {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, var(--accent-hot), var(--accent-neon));
    color: var(--text-dark);
    font-family: 'Oswald', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(255, 0, 110, 0.5), 0 0 20px rgba(57, 255, 20, 0.3);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    animation: genius-badge-pulse 2s ease-in-out infinite;
}

@keyframes genius-badge-pulse {
    0%, 100% {
        box-shadow: 0 2px 12px rgba(255, 0, 110, 0.5), 0 0 20px rgba(57, 255, 20, 0.3);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 2px 16px rgba(255, 0, 110, 0.7), 0 0 30px rgba(57, 255, 20, 0.5), 0 0 40px rgba(0, 245, 255, 0.3);
        transform: scale(1.05);
    }
}

@keyframes beta-pulse {

    0%,
    100% {
        box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4), 0 0 12px rgba(59, 130, 246, 0.2);
    }

    50% {
        box-shadow: 0 2px 12px rgba(59, 130, 246, 0.6), 0 0 20px rgba(59, 130, 246, 0.4);
    }
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: 0.82rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--nav-text-light);
    text-decoration: none;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.6);
    transition: color 0.4s ease, text-shadow 0.4s ease;
    position: relative;
    padding-bottom: 4px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--blue-ocean);
    transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--blue-ocean);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* Scrolled state: revert to original dark colors */
nav.nav--scrolled .nav-logo {
    color: var(--blue-ocean);
}

nav.nav--scrolled .nav-links a {
    color: var(--text-muted);
    text-shadow: none;
}

nav.nav--scrolled .nav-links a::after {
    background: var(--blue-ocean);
}

nav.nav--scrolled .nav-links a:hover::after,
nav.nav--scrolled .nav-links a.active::after {
    width: 100%;
}

/* Genius link - outline ghost pill */
.genius-link {
    position: relative;
    padding: 6px 16px !important;
    background: transparent !important;
    color: var(--blue-ocean) !important;
    font-family: 'Inter', sans-serif !important;
    font-weight: 600 !important;
    font-size: 0.82rem !important;
    letter-spacing: 2px;
    border-radius: 20px;
    border: 1.5px solid var(--blue-ocean) !important;
    box-shadow: none;
    transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.genius-link::after {
    display: none !important;
}

.genius-link:hover {
    background: var(--blue-pastel) !important;
    color: var(--text-dark) !important;
    box-shadow: 0 4px 14px rgba(79, 168, 186, 0.3);
    transform: none;
    text-shadow: none !important;
}

nav.nav--scrolled .genius-link {
    color: var(--blue-ocean) !important;
    border-color: var(--blue-ocean) !important;
}

nav.nav--scrolled .genius-link:hover {
    background: var(--blue-pastel) !important;
    color: var(--text-dark) !important;
}

/* ─────────────────────────────────────────────
   HAMBURGER BUTTON
   ───────────────────────────────────────────── */
.nav-close {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--blue-ocean);
    border-radius: 2px;
    box-shadow: none;
    transition: transform 0.3s ease, opacity 0.2s ease;
    transform-origin: center;
}

nav.nav--open .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

nav.nav--open .nav-toggle span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

nav.nav--open .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ─────────────────────────────────────────────
   FOOTER
   ───────────────────────────────────────────── */
footer {
    background: #2c3e50;
    border-top: 1px solid rgba(179, 235, 242, 0.3);
    padding: 2.5rem 2rem;
    text-align: center;
}

.footer-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: 8px;
    color: var(--blue-pastel);
    text-shadow: 0 2px 4px rgba(94, 184, 197, 0.2);
    margin-bottom: 0.75rem;
}

footer p {
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
}

/* ─────────────────────────────────────────────
   DIVIDER - Animated section separators
   ───────────────────────────────────────────── */
.divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(179, 235, 242, 0.4), transparent);
    margin: 0;
}

.divider-animated {
    width: 100%;
    height: 3px;
    margin: 4rem 0;
    position: relative;
    overflow: hidden;
    background: linear-gradient(90deg, transparent, rgba(135, 212, 224, 0.2), transparent);
}

.divider-animated::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--accent-cyber), transparent);
    animation: divider-sweep 3s ease-in-out infinite;
}

@keyframes divider-sweep {
    0% {
        left: -100%;
    }

    100% {
        left: 100%;
    }
}

/* Section divider with glitch effect */
.section-divider {
    width: 100%;
    height: 2px;
    margin: 0;
    position: relative;
    background: linear-gradient(90deg, transparent 0%, var(--blue-pastel) 50%, transparent 100%);
}

.section-divider.glitch-divider {
    animation: divider-glitch 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes divider-glitch {

    0%,
    100% {
        transform: translateX(0);
        filter: hue-rotate(0deg);
    }

    20% {
        transform: translateX(-5px);
        filter: hue-rotate(90deg);
    }

    40% {
        transform: translateX(5px);
        filter: hue-rotate(-90deg);
    }

    60% {
        transform: translateX(-3px);
    }

    80% {
        transform: translateX(3px);
    }
}

/* ─────────────────────────────────────────────
   LANGUAGE SWITCHER
   ───────────────────────────────────────────── */
.lang-switcher {
    font-family: 'Oswald', sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid var(--blue-pastel);
    border-radius: 4px;
    transition: all 0.25s ease;
    display: inline-block;
}

.lang-switcher:hover {
    color: var(--blue-ocean);
    border-color: var(--blue-ocean);
    box-shadow: 0 2px 8px rgba(94, 184, 197, 0.2);
}

/* ─────────────────────────────────────────────
   BACKGROUND PATTERNS - Geometric textures
   ───────────────────────────────────────────── */
.bg-pattern-geo {
    position: relative;
    overflow: hidden;
}

.bg-pattern-geo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.04;
    background-image:
        linear-gradient(30deg, var(--blue-ocean) 12%, transparent 12.5%, transparent 87%, var(--blue-ocean) 87.5%, var(--blue-ocean)),
        linear-gradient(150deg, var(--blue-ocean) 12%, transparent 12.5%, transparent 87%, var(--blue-ocean) 87.5%, var(--blue-ocean)),
        linear-gradient(30deg, var(--blue-ocean) 12%, transparent 12.5%, transparent 87%, var(--blue-ocean) 87.5%, var(--blue-ocean)),
        linear-gradient(150deg, var(--blue-ocean) 12%, transparent 12.5%, transparent 87%, var(--blue-ocean) 87.5%, var(--blue-ocean));
    background-size: 80px 140px;
    background-position: 0 0, 0 0, 40px 70px, 40px 70px;
    pointer-events: none;
    z-index: 0;
}

.bg-gradient-shift {
    position: relative;
    overflow: hidden;
}

.bg-gradient-shift::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    right: -50%;
    bottom: -50%;
    background: radial-gradient(ellipse at center,
            rgba(57, 255, 20, 0.08) 0%,
            rgba(0, 245, 255, 0.06) 30%,
            rgba(255, 0, 110, 0.04) 60%,
            transparent 80%);
    animation: gradient-shift 15s ease-in-out infinite alternate;
    pointer-events: none;
    z-index: 0;
}

@keyframes gradient-shift {
    0% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(10%, -5%) scale(1.05);
    }

    66% {
        transform: translate(-5%, 10%) scale(0.95);
    }

    100% {
        transform: translate(-10%, -10%) scale(1.1);
    }
}

/* Ensure content stays above background patterns */
.bg-pattern-geo>*,
.bg-gradient-shift>* {
    position: relative;
    z-index: 1;
}

/* ─────────────────────────────────────────────
   RESPONSIVE – Mobile Menu (full-screen overlay)
   ───────────────────────────────────────────── */
@media (max-width: 680px) {
    .nav-toggle {
        display: flex;
    }

    /* Close icon (×) style when open */
    nav.nav--open .nav-toggle span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
        background: var(--blue-pastel);
    }
    nav.nav--open .nav-toggle span:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }
    nav.nav--open .nav-toggle span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
        background: var(--blue-pastel);
    }

    /* X close button inside overlay */
    .nav-close {
        display: none;
        position: absolute;
        top: 1.2rem;
        right: 1.4rem;
        background: none;
        border: none;
        color: rgba(255, 255, 255, 0.5);
        font-size: 1.6rem;
        line-height: 1;
        cursor: pointer;
        padding: 6px;
        transition: color 0.2s ease, transform 0.2s ease;
    }

    .nav-close:hover {
        color: var(--blue-pastel);
        transform: rotate(90deg);
    }

    nav.nav--open .nav-close {
        display: block;
        animation: link-rise 0.3s ease forwards;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 18, 28, 0.97);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: 2rem;
        gap: 0;
        z-index: 99;
        /* decorative accent line at top */
        border-top: 2px solid var(--blue-pastel);
    }

    nav.nav--open .nav-links {
        display: flex;
        animation: overlay-fade-in 0.35s cubic-bezier(0.22, 1, 0.36, 1) both;
    }

    @keyframes overlay-fade-in {
        from {
            opacity: 0;
            transform: scale(1.03);
        }
        to {
            opacity: 1;
            transform: scale(1);
        }
    }

    /* Each link gets a stagger via nth-child */
    .nav-links li {
        width: 100%;
        text-align: center;
        opacity: 0;
        transform: translateY(20px);
    }

    nav.nav--open .nav-links li {
        animation: link-rise 0.45s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    }

    nav.nav--open .nav-links li:nth-child(1) { animation-delay: 0.08s; }
    nav.nav--open .nav-links li:nth-child(2) { animation-delay: 0.14s; }
    nav.nav--open .nav-links li:nth-child(3) { animation-delay: 0.20s; }
    nav.nav--open .nav-links li:nth-child(4) { animation-delay: 0.26s; }
    nav.nav--open .nav-links li:nth-child(5) { animation-delay: 0.32s; }

    @keyframes link-rise {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .nav-links a {
        display: block;
        font-family: 'Oswald', sans-serif;
        font-size: 2rem;
        font-weight: 400;
        letter-spacing: 6px;
        text-transform: uppercase;
        color: rgba(255, 255, 255, 0.75);
        text-shadow: none;
        padding: 0.9rem 0;
        text-decoration: none;
        transition: color 0.2s ease, letter-spacing 0.2s ease;
        border-bottom: 1px solid rgba(135, 212, 224, 0.08);
    }

    .nav-links a:hover,
    .nav-links a.active {
        color: var(--blue-pastel);
        letter-spacing: 8px;
    }

    /* Override the underline pseudo for big overlay links */
    .nav-links a::after {
        display: none !important;
    }

    /* Génie pill adapts to dark bg */
    .genius-link {
        font-family: 'Oswald', sans-serif !important;
        font-size: 1.6rem !important;
        letter-spacing: 5px !important;
        padding: 10px 32px !important;
        border-color: var(--blue-pastel) !important;
        color: var(--blue-pastel) !important;
        background: transparent !important;
        border-width: 1.5px !important;
        margin-top: 0.4rem;
    }

    .genius-link:hover {
        background: var(--blue-pastel) !important;
        color: var(--text-dark) !important;
        letter-spacing: 7px !important;
    }
}

/* ─────────────────────────────────────────────
   ACCESSIBILITY - Reduced Motion
   ───────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    /* Disable grain pulse */
    body::before {
        animation: none !important;
        opacity: 0.02 !important;
    }
}