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

:root {
    --bg: #0a0a0b;
    --bg-card: #111113;
    --bg-card-hover: #18181b;
    --bg-dark: #08080a;
    --border: #1e1e22;
    --border-light: #2a2a30;
    --text: #e4e4e7;
    --text-muted: #71717a;
    --text-dim: #52525b;
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #a78bfa);
    --gradient-text: linear-gradient(135deg, #818cf8, #c084fc);
    --radius: 12px;
    --radius-lg: 20px;
    --font: 'Inter', -apple-system, sans-serif;
    --mono: 'JetBrains Mono', monospace;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* === NAV === */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
    height: 72px;
}
.nav-logo { font-weight: 700; font-size: 1.2rem; letter-spacing: -0.02em; }
.logo-bracket { color: var(--accent); font-family: var(--mono); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: 0.9rem; color: var(--text-muted); transition: color 0.2s; font-weight: 500; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
    background: var(--accent) !important; color: #fff !important;
    padding: 8px 20px; border-radius: 8px; font-weight: 600 !important;
    transition: opacity 0.2s !important;
}
.nav-cta:hover { opacity: 0.9; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; transition: 0.3s; }
.lang-switcher { display: flex; gap: 4px; margin-left: 8px; }
.lang-btn {
    background: none; border: 1px solid var(--border); cursor: pointer;
    font-size: 0.75rem; padding: 6px 10px; border-radius: 6px;
    opacity: 0.5; transition: all 0.2s; line-height: 1;
    color: var(--text-muted); font-family: var(--font); font-weight: 600;
    letter-spacing: 0.05em;
}
.lang-btn.active { opacity: 1; border-color: var(--accent); color: var(--accent-light); background: var(--accent-glow); }
.lang-btn:hover { opacity: 1; }
.nav-right-mobile { display: none; align-items: center; gap: 12px; }
.lang-switcher-mobile { display: none; }

/* === HERO === */
.hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: 120px 24px 80px; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.grid-overlay {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.glow {
    position: absolute; border-radius: 50%; filter: blur(120px); opacity: 0.4;
}
.glow-1 { width: 600px; height: 600px; background: var(--accent); top: -200px; left: -100px; opacity: 0.15; }
.glow-2 { width: 500px; height: 500px; background: #8b5cf6; bottom: -200px; right: -100px; opacity: 0.1; }

.hero-content { text-align: center; max-width: 800px; position: relative; z-index: 1; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 16px; border-radius: 100px;
    background: rgba(99, 102, 241, 0.1); border: 1px solid rgba(99, 102, 241, 0.2);
    font-size: 0.85rem; color: var(--accent-light); font-weight: 500;
    margin-bottom: 32px;
}
.badge-dot { width: 6px; height: 6px; background: #22c55e; border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800;
    line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 24px;
}
.gradient-text {
    background: var(--gradient-text); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-sub { font-size: 1.15rem; color: var(--text-muted); max-width: 600px; margin: 0 auto 40px; line-height: 1.7; }
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 64px; flex-wrap: wrap; }

.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 28px; border-radius: 10px; font-weight: 600;
    font-size: 0.95rem; transition: all 0.2s; cursor: pointer; border: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-light); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border-light); }
.btn-ghost:hover { border-color: var(--text-muted); background: rgba(255,255,255,0.03); }

.hero-stats { display: flex; align-items: center; justify-content: center; gap: 32px; flex-wrap: wrap; }
.stat { text-align: center; }
.stat-number { display: block; font-size: 2rem; font-weight: 800; color: var(--text); letter-spacing: -0.02em; }
.stat-label { font-size: 0.8rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

.scroll-indicator {
    position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
}
.scroll-line {
    width: 1px; height: 48px; background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollDown 2s infinite;
}
@keyframes scrollDown { 0% { opacity: 0; transform: scaleY(0); transform-origin: top; } 50% { opacity: 1; transform: scaleY(1); } 100% { opacity: 0; } }

/* === SECTIONS === */
.section { padding: 120px 0; }
.section-dark { background: var(--bg-dark); }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
    display: inline-block; font-size: 0.8rem; font-weight: 600;
    color: var(--accent-light); text-transform: uppercase; letter-spacing: 0.1em;
    margin-bottom: 16px;
}
.section-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 16px; }
.section-sub { font-size: 1.1rem; color: var(--text-muted); max-width: 500px; margin: 0 auto; }

/* === SERVICES === */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 32px;
    transition: all 0.3s; position: relative; overflow: hidden;
}
.service-card:hover { border-color: var(--border-light); transform: translateY(-4px); background: var(--bg-card-hover); }
.service-card.featured { border-color: rgba(99, 102, 241, 0.3); }
.service-card.featured::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: var(--gradient);
}
.service-icon { width: 48px; height: 48px; color: var(--accent-light); margin-bottom: 20px; }
.service-icon svg { width: 100%; height: 100%; }
.service-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; }
.service-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 20px; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; }
.service-tags li {
    font-size: 0.75rem; padding: 4px 10px; border-radius: 6px;
    background: rgba(99, 102, 241, 0.08); color: var(--accent-light); font-weight: 500;
}

/* === PROJECTS === */
.projects-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.project-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 32px;
    transition: all 0.3s;
}
.project-card:hover { border-color: var(--border-light); transform: translateY(-2px); }
.project-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.project-tag {
    font-size: 0.75rem; padding: 4px 10px; border-radius: 6px;
    background: rgba(99, 102, 241, 0.1); color: var(--accent-light); font-weight: 600;
}
.project-company { font-size: 0.8rem; color: var(--text-dim); }
.project-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; }
.project-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }
.project-link {
    display: inline-block; margin-top: 12px; font-size: 0.85rem;
    color: var(--accent-light); font-weight: 600; transition: opacity 0.2s;
}
.project-link:hover { opacity: 0.8; }
.highlight-card { border-color: rgba(234, 179, 8, 0.2); position: relative; }
.highlight-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(135deg, #eab308, #f59e0b);
}
.trophy { font-size: 2rem; margin-bottom: 12px; }

/* === ABOUT === */
.about-layout { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 64px; align-items: start; }
.about-text p { color: var(--text-muted); margin-bottom: 16px; font-size: 0.95rem; line-height: 1.7; }
.about-text strong { color: var(--text); }
.about-links { display: flex; gap: 12px; margin-top: 20px; }
.social-link {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 16px; border-radius: 8px;
    border: 1px solid var(--border); font-size: 0.85rem; font-weight: 500;
    color: var(--text-muted); transition: all 0.2s;
}
.social-link svg { width: 16px; height: 16px; }
.social-link:hover { border-color: var(--accent); color: var(--accent-light); }

.about-sidebar { display: flex; flex-direction: column; gap: 20px; }
.founder-card, .values-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 28px;
}
.founder-header { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.founder-avatar {
    width: 52px; height: 52px; border-radius: 12px;
    background: var(--gradient); display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 1.1rem; color: #fff; flex-shrink: 0;
}
.founder-header h4 { font-size: 1.05rem; font-weight: 700; }
.founder-header span { font-size: 0.8rem; color: var(--accent-light); font-weight: 500; }
.founder-bio { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }
.values-card h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 16px; }
.values-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.values-list li { font-size: 0.88rem; color: var(--text-muted); line-height: 1.5; }
.values-list li strong { color: var(--text); }

/* === TECH STACK === */
.stack-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.stack-category {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
}
.stack-category h4 { font-size: 0.85rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 16px; font-weight: 600; }
.stack-items { display: flex; flex-wrap: wrap; gap: 8px; }
.stack-items span {
    font-size: 0.85rem; padding: 6px 12px; border-radius: 8px;
    background: rgba(255, 255, 255, 0.04); color: var(--text);
    font-weight: 500; border: 1px solid var(--border);
    transition: all 0.2s;
}
.stack-items span:hover { border-color: var(--accent); color: var(--accent-light); background: var(--accent-glow); }

/* === CTA === */
.section-cta {
    background: var(--bg);
    position: relative; overflow: hidden;
}
.section-cta::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at center, var(--accent-glow), transparent 70%);
    pointer-events: none;
}
.cta-content { text-align: center; position: relative; z-index: 1; }
.cta-title { font-size: clamp(2.5rem, 5vw, 3.5rem); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 16px; }
.cta-sub { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 48px; }
.contact-methods { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.contact-card {
    display: flex; align-items: center; gap: 12px;
    padding: 16px 24px; border-radius: var(--radius);
    background: var(--bg-card); border: 1px solid var(--border);
    transition: all 0.2s; font-size: 0.95rem; font-weight: 500;
}
.contact-card svg { width: 20px; height: 20px; flex-shrink: 0; color: var(--accent-light); }
.contact-card:hover { border-color: var(--accent); transform: translateY(-2px); }

/* === FOOTER === */
.footer { padding: 40px 0; border-top: 1px solid var(--border); }
.footer-content { display: flex; align-items: center; justify-content: space-between; }
.footer-logo { font-weight: 700; font-size: 1.1rem; }
.footer-text { font-size: 0.85rem; color: var(--text-dim); }

/* === ANIMATIONS === */
.fade-up { opacity: 0; transform: translateY(30px); transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1); }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* === RESPONSIVE === */
@media (max-width: 968px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .about-layout { grid-template-columns: 1fr; gap: 48px; }
    .stack-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); flex-direction: column; padding: 24px; gap: 20px; }
    .nav-links.open { display: flex; }
    .nav-links .lang-switcher { display: none; }
    .nav-toggle { display: block; }
    .nav-right-mobile { display: flex; }
    .lang-switcher-mobile { display: flex; }
    .services-grid { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: 1fr; }
    .stack-grid { grid-template-columns: 1fr; }
    .hero-stats { gap: 20px; }
    .stat-divider { display: none; }
    .hero { padding: 100px 24px 60px; }
    .section { padding: 80px 0; }
    .footer-content { flex-direction: column; gap: 12px; text-align: center; }
    .contact-methods { flex-direction: column; align-items: center; }
}