/* ============================================
   AL RESEARCH LAB — DESIGN SYSTEM
   Black & White | Pixel Font Accents | Animated
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --white: #ffffff;
    --off-white: #f5f5f5;
    --gray-100: #e8e8e8;
    --gray-200: #d0d0d0;
    --gray-300: #a0a0a0;
    --gray-400: #707070;
    --gray-500: #505050;
    --gray-600: #333333;
    --gray-700: #1a1a1a;
    --black: #0a0a0a;
    --pure-black: #000000;

    --font-pixel: 'Press Start 2P', monospace;
    --font-mono: 'Space Mono', monospace;
    --font-sans: 'Inter', -apple-system, sans-serif;

    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-sans);
    background: var(--black);
    color: var(--off-white);
    overflow-x: hidden;
    cursor: default;
}

::selection {
    background: var(--white);
    color: var(--black);
}

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

.pixel-font { font-family: var(--font-pixel); }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* --- Noise Overlay --- */
.noise-overlay {
    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 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* --- Cursor Glow --- */
.cursor-glow {
    position: fixed; width: 400px; height: 400px;
    border-radius: 50%; pointer-events: none; z-index: 1;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: opacity 0.3s;
    opacity: 0;
}
body:hover .cursor-glow { opacity: 1; }

/* --- Blink Animation --- */
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}
.blink { animation: blink 1.2s step-end infinite; }

/* --- Reveal Animations --- */
.reveal-up {
    opacity: 0; transform: translateY(40px);
    transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
    transition-delay: var(--delay, 0s);
}
.reveal-up.revealed { opacity: 1; transform: translateY(0); }

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    padding: 1.5rem 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: padding 0.3s, background 0.3s;
}
.nav.scrolled { padding: 1rem 0; background: rgba(10, 10, 10, 0.95); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

.nav-logo { font-family: var(--font-pixel); font-size: 0.9rem; letter-spacing: 2px; display: flex; align-items: center; gap: 2px; transition: opacity 0.3s; }
.nav-logo:hover { opacity: 0.7; }
.logo-bracket { color: var(--gray-400); }
.logo-text { color: var(--white); }

.nav-links { display: flex; gap: 2.5rem; }
.nav-link {
    font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 1px;
    color: var(--gray-300); position: relative; transition: color 0.3s;
}
.nav-link::before {
    content: attr(data-index); font-family: var(--font-pixel); font-size: 0.5rem;
    position: absolute; top: -12px; left: 0; color: var(--gray-500);
    transition: color 0.3s;
}
.nav-link::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 1px; background: var(--white);
    transition: width 0.3s var(--ease-out-expo);
}
.nav-link:hover { color: var(--white); }
.nav-link:hover::before { color: var(--gray-300); }
.nav-link:hover::after { width: 100%; }

.nav-toggle {
    display: none; background: none; border: none; cursor: pointer;
    width: 28px; height: 20px; position: relative; z-index: 1001;
}
.nav-toggle span {
    display: block; width: 100%; height: 1px; background: var(--white);
    position: absolute; left: 0; transition: all 0.3s var(--ease-out-expo);
}
.nav-toggle span:first-child { top: 4px; }
.nav-toggle span:last-child { bottom: 4px; }
.nav-toggle.active span:first-child { top: 50%; transform: rotate(45deg); }
.nav-toggle.active span:last-child { bottom: 50%; transform: rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
    position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
    background: var(--black); z-index: 999;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none; transition: opacity 0.4s;
}
.mobile-menu.active { opacity: 1; pointer-events: all; }
.mobile-menu-inner { text-align: center; }
.mobile-link {
    display: block; padding: 1.5rem 0; transition: opacity 0.3s;
}
.mobile-link:hover { opacity: 0.6; }
.mobile-link-index { font-family: var(--font-pixel); font-size: 0.6rem; color: var(--gray-500); display: block; margin-bottom: 0.5rem; }
.mobile-link-text { font-family: var(--font-sans); font-size: 2rem; font-weight: 300; color: var(--white); letter-spacing: 4px; text-transform: uppercase; }

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    position: relative; overflow: hidden;
    padding: 8rem 0 4rem;
}
.hero-grid-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.hero-content { position: relative; z-index: 2; }

.hero-tag {
    display: inline-flex; align-items: center; gap: 0.75rem;
    font-family: var(--font-mono); font-size: 0.75rem;
    color: var(--gray-300); letter-spacing: 2px; text-transform: uppercase;
    margin-bottom: 2rem;
}
.tag-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--white); animation: blink 2s ease-in-out infinite;
}

.hero-title { margin-bottom: 2rem; }
.hero-line {
    display: block; font-size: clamp(3rem, 8vw, 7rem);
    font-weight: 700; line-height: 1.05; letter-spacing: -2px;
    color: var(--white);
}
.hero-line-outline {
    -webkit-text-stroke: 1.5px var(--gray-400);
    color: transparent;
}

.hero-subtitle {
    font-size: 1.1rem; line-height: 1.8; color: var(--gray-300);
    font-weight: 300; max-width: 560px;
}

.hero-meta {
    display: flex; align-items: center; gap: 2rem;
    margin-top: 3rem; padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-meta-item { display: flex; flex-direction: column; gap: 0.3rem; }
.meta-label { font-size: 0.65rem; color: var(--gray-500); text-transform: uppercase; letter-spacing: 2px; font-family: var(--font-mono); }
.meta-value { font-size: 0.7rem; color: var(--white); letter-spacing: 2px; }
.hero-meta-divider { width: 1px; height: 30px; background: rgba(255,255,255,0.1); }

.hero-scroll-indicator {
    position: absolute; bottom: 3rem; right: 2rem;
    display: flex; flex-direction: column; align-items: center; gap: 1rem;
}
.scroll-line { width: 1px; height: 60px; background: linear-gradient(to bottom, var(--white), transparent); animation: scrollPulse 2s ease-in-out infinite; }
.scroll-text { font-size: 0.5rem; color: var(--gray-400); letter-spacing: 3px; writing-mode: vertical-rl; }

@keyframes scrollPulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50% { opacity: 0.3; transform: scaleY(0.6); }
}

/* Particles */
.particles { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: 1; }

/* ============================================
   SECTIONS
   ============================================ */
.section { padding: 8rem 0; position: relative; }
.section-dark { background: var(--gray-700); }

.section-header { margin-bottom: 4rem; }
.section-index {
    font-size: 0.6rem; color: var(--gray-500); letter-spacing: 3px;
    display: block; margin-bottom: 1rem;
}
.section-title {
    font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 700;
    letter-spacing: -1px; color: var(--white);
}

/* --- About --- */
.about-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 4rem; align-items: start; }
.about-lead { font-size: 1.3rem; line-height: 1.7; color: var(--off-white); font-weight: 400; margin-bottom: 1.5rem; }
.about-text { font-size: 1rem; line-height: 1.8; color: var(--gray-300); margin-bottom: 1rem; }

.about-stats { display: flex; flex-direction: column; gap: 1.5rem; }
.stat-card {
    padding: 1.5rem; border: 1px solid rgba(255,255,255,0.08);
    display: flex; flex-direction: column; gap: 0.5rem;
    transition: border-color 0.3s;
}
.stat-card:hover { border-color: rgba(255,255,255,0.2); }
.stat-number, .stat-symbol { font-size: 1.5rem; color: var(--white); }
.stat-label { font-size: 0.75rem; color: var(--gray-400); font-family: var(--font-mono); letter-spacing: 1px; }

/* --- Focus --- */
.focus-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; }
.focus-card {
    padding: 2rem; border: 1px solid rgba(255,255,255,0.06);
    position: relative; overflow: hidden;
    transition: border-color 0.4s, transform 0.4s var(--ease-out-expo);
}
.focus-card:hover { border-color: rgba(255,255,255,0.15); transform: translateY(-4px); }
.focus-icon { font-size: 0.9rem; color: var(--gray-400); margin-bottom: 1.5rem; }
.focus-title { font-size: 1rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--white); }
.focus-desc { font-size: 0.85rem; line-height: 1.6; color: var(--gray-300); }
.focus-line {
    position: absolute; bottom: 0; left: 0; width: 0; height: 1px;
    background: var(--white); transition: width 0.6s var(--ease-out-expo);
}
.focus-card:hover .focus-line { width: 100%; }

/* --- Timeline --- */
.timeline { position: relative; padding-left: 3rem; }
.timeline-line {
    position: absolute; left: 0; top: 0; width: 1px; height: 100%;
    background: linear-gradient(to bottom, rgba(255,255,255,0.2), transparent);
}
.timeline-item { position: relative; margin-bottom: 3rem; }
.timeline-dot {
    position: absolute; left: -3rem; top: 0.5rem;
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--white); transform: translateX(-3px);
}
.timeline-date { font-size: 0.55rem; color: var(--gray-500); letter-spacing: 3px; margin-bottom: 0.75rem; }
.timeline-card { padding: 1.5rem; border: 1px solid rgba(255,255,255,0.08); }
.timeline-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--white); }
.timeline-text { font-size: 0.9rem; line-height: 1.7; color: var(--gray-300); }

.founder-quote { margin-top: 4rem; padding-left: 3rem; }
.quote { position: relative; }
.quote-mark { font-size: 2rem; color: var(--gray-500); position: absolute; top: -1rem; left: -2rem; }
.quote p { font-size: 1.4rem; line-height: 1.6; font-weight: 300; font-style: italic; color: var(--off-white); margin-bottom: 1.5rem; }
.quote-footer { display: flex; flex-direction: column; gap: 0.25rem; }
.quote-author { font-size: 0.85rem; font-weight: 600; color: var(--white); }
.quote-role { font-size: 0.75rem; color: var(--gray-400); font-family: var(--font-mono); }

/* --- Mission --- */
.mission-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.mission-card {
    padding: 2.5rem; border: 1px solid rgba(255,255,255,0.06);
    transition: border-color 0.3s, transform 0.3s var(--ease-out-expo);
}
.mission-card:hover { border-color: rgba(255,255,255,0.15); transform: translateY(-2px); }
.mission-number { font-size: 0.6rem; color: var(--gray-500); margin-bottom: 1.5rem; letter-spacing: 2px; }
.mission-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--white); }
.mission-text { font-size: 0.9rem; line-height: 1.7; color: var(--gray-300); }

/* --- Work --- */
.work-categories { display: flex; flex-direction: column; gap: 1.5rem; }
.work-category {
    padding: 2rem 2.5rem; border: 1px solid rgba(255,255,255,0.06);
    transition: border-color 0.3s;
}
.work-category:hover { border-color: rgba(255,255,255,0.15); }
.work-cat-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.work-cat-icon { font-size: 0.7rem; color: var(--gray-400); }
.work-cat-title { font-size: 1.1rem; font-weight: 600; color: var(--white); }
.work-cat-desc { font-size: 0.9rem; line-height: 1.7; color: var(--gray-300); margin-bottom: 1.25rem; }
.work-tag-list { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.work-tag {
    font-family: var(--font-mono); font-size: 0.7rem;
    padding: 0.35rem 0.75rem; border: 1px solid rgba(255,255,255,0.1);
    color: var(--gray-400); letter-spacing: 1px;
    transition: border-color 0.3s, color 0.3s;
}
.work-tag:hover { border-color: var(--white); color: var(--white); }

/* --- Contact --- */
.contact-content { max-width: 700px; }
.contact-lead { font-size: 1.3rem; line-height: 1.7; color: var(--off-white); font-weight: 400; margin-bottom: 0.5rem; }
.contact-sub { font-size: 1rem; color: var(--gray-400); margin-bottom: 3rem; }
.contact-links { display: flex; flex-direction: column; gap: 1rem; }
.contact-link {
    display: flex; align-items: center; gap: 1.5rem;
    padding: 1.5rem 2rem; border: 1px solid rgba(255,255,255,0.08);
    transition: border-color 0.3s, background 0.3s;
}
.contact-link:hover { border-color: rgba(255,255,255,0.2); background: rgba(255,255,255,0.02); }
.contact-link-label { font-size: 0.55rem; color: var(--gray-500); letter-spacing: 3px; min-width: 60px; }
.contact-link-value { font-size: 1rem; color: var(--white); flex: 1; }
.contact-link-arrow { font-size: 1.2rem; color: var(--gray-400); transition: transform 0.3s, color 0.3s; }
.contact-link:hover .contact-link-arrow { transform: translateX(4px); color: var(--white); }

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: 3rem 0; border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-inner {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 1.5rem;
}
.footer-brand { display: flex; align-items: center; gap: 1rem; }
.footer-logo { font-size: 0.7rem; color: var(--gray-400); }
.footer-name { font-size: 0.85rem; color: var(--gray-300); }
.footer-info { display: flex; align-items: center; gap: 0.75rem; font-size: 0.8rem; color: var(--gray-500); }
.footer-divider { color: var(--gray-600); }
.footer-copy { display: flex; align-items: center; gap: 0.75rem; font-size: 0.7rem; color: var(--gray-500); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle { display: block; }
    .hero { padding: 6rem 0 3rem; }
    .hero-line { letter-spacing: -1px; }
    .hero-meta { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
    .hero-meta-divider { width: 40px; height: 1px; }
    .hero-scroll-indicator { display: none; }
    .about-grid { grid-template-columns: 1fr; gap: 3rem; }
    .about-stats { flex-direction: row; }
    .focus-grid { grid-template-columns: 1fr; }
    .mission-grid { grid-template-columns: 1fr; }
    .footer-inner { flex-direction: column; align-items: flex-start; }
    .section { padding: 5rem 0; }
    .container { padding: 0 1.5rem; }
    .founder-quote { padding-left: 2rem; }
    .quote p { font-size: 1.1rem; }
}

@media (max-width: 480px) {
    .about-stats { flex-direction: column; }
    .hero-subtitle br { display: none; }
    .contact-link { flex-wrap: wrap; gap: 0.75rem; padding: 1.25rem 1.5rem; }
    .contact-link-label { min-width: auto; }
}