/* === VARIABLES === */
:root {
    --bg: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #16161f;
    --bg-card-hover: #1a1a25;
    --text: #e4e4e7;
    --text-muted: #71717a;
    --text-dim: #52525b;
    --primary: #00ff88;
    --primary-dim: #00cc6a;
    --primary-glow: rgba(0, 255, 136, 0.15);
    --accent: #7c3aed;
    --accent-glow: rgba(124, 58, 237, 0.15);
    --warning: #f59e0b;
    --danger: #ef4444;
    --success: #22c55e;
    --border: #27272a;
    --border-light: #3f3f46;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --font: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --shadow: 0 4px 6px -1px rgba(0,0,0,.3), 0 2px 4px -2px rgba(0,0,0,.3);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.4), 0 4px 6px -4px rgba(0,0,0,.4);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; overflow-x: hidden; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dim); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* === CANVAS BG === */
#matrix-bg { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; opacity: 0.06; pointer-events: none; }

/* === CONTAINER === */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

/* === NAV === */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding: 16px 0; transition: var(--transition); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); }
.nav.scrolled { background: rgba(10, 10, 15, 0.9); border-bottom: 1px solid var(--border); }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: var(--font-mono); font-size: 1.25rem; font-weight: 700; color: var(--text); }
.logo-bracket { color: var(--primary); }
.nav-links { display: flex; gap: 32px; }
.nav-link { color: var(--text-muted); font-size: 0.9rem; font-weight: 500; position: relative; padding: 4px 0; }
.nav-link::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--primary); transition: var(--transition); }
.nav-link:hover, .nav-link.active { color: var(--text); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text); transition: var(--transition); }

/* === HERO === */
.hero { min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 60px; max-width: 1200px; margin: 0 auto; padding: 120px 24px 80px; position: relative; z-index: 1; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: var(--primary-glow); color: var(--primary); padding: 8px 16px; border-radius: 100px; font-size: 0.85rem; font-weight: 500; margin-bottom: 24px; border: 1px solid rgba(0,255,136,0.2); }
.badge-dot { width: 8px; height: 8px; background: var(--primary); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero-title { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 800; line-height: 1.15; margin-bottom: 24px; }
.hero-line { display: block; }
.text-gradient { background: linear-gradient(135deg, var(--primary), #00d4ff); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.text-highlight { color: var(--primary); font-weight: 600; }
.typewriter { font-family: var(--font-mono); font-size: 0.6em; color: var(--primary); }
.cursor { animation: blink 1s infinite; color: var(--primary); }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
.hero-desc { font-size: 1.125rem; color: var(--text-muted); max-width: 540px; margin-bottom: 32px; line-height: 1.8; }
.hero-actions { display: flex; gap: 16px; margin-bottom: 48px; }
.hero-stats { display: flex; align-items: center; gap: 32px; }
.stat { text-align: center; }
.stat-number { font-size: 2rem; font-weight: 800; color: var(--primary); font-family: var(--font-mono); }
.stat-label { display: block; font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

/* === BUTTONS === */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; transition: var(--transition); cursor: pointer; border: none; }
.btn-primary { background: var(--primary); color: var(--bg); }
.btn-primary:hover { background: var(--primary-dim); color: var(--bg); transform: translateY(-2px); box-shadow: 0 8px 25px var(--primary-glow); }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border-light); }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.btn-full { width: 100%; justify-content: center; }

/* === TERMINAL === */
.terminal { background: #1a1a2e; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); border: 1px solid var(--border); }
.terminal-header { display: flex; align-items: center; padding: 12px 16px; background: #16162a; border-bottom: 1px solid var(--border); }
.terminal-dots { display: flex; gap: 8px; margin-right: 16px; }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }
.terminal-title { color: var(--text-muted); font-size: 0.8rem; font-family: var(--font-mono); }
.terminal-body { padding: 20px; font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.8; }
.terminal-line { margin-bottom: 4px; }
.prompt { color: var(--primary); }
.cmd { color: var(--text); }
.output { color: var(--text-muted); padding-left: 20px; }
.output.success { color: var(--success); }
.output.warning { color: var(--warning); }

/* === SECTIONS === */
.section { padding: 100px 0; position: relative; z-index: 1; }
.section-dark { background: var(--bg-secondary); }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag { font-family: var(--font-mono); font-size: 0.9rem; color: var(--primary); display: block; margin-bottom: 12px; }
.section-title { font-size: clamp(2rem, 4vw, 2.75rem); font-weight: 800; margin-bottom: 16px; }
.section-subtitle { color: var(--text-muted); font-size: 1.1rem; max-width: 560px; margin: 0 auto; }

/* === ABOUT === */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; align-items: start; }
.about-text p { color: var(--text-muted); margin-bottom: 16px; font-size: 1.05rem; }
.about-text strong { color: var(--text); }
.about-highlights { margin-top: 32px; display: flex; flex-direction: column; gap: 20px; }
.highlight { display: flex; gap: 16px; align-items: flex-start; }
.highlight-icon { font-size: 1.5rem; flex-shrink: 0; margin-top: 2px; }
.highlight strong { color: var(--text); display: block; margin-bottom: 4px; }
.highlight p { color: var(--text-muted); font-size: 0.9rem; margin: 0; }
.about-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; position: sticky; top: 100px; }
.card-header { display: flex; align-items: center; gap: 12px; padding: 20px 24px; background: var(--bg-secondary); border-bottom: 1px solid var(--border); font-weight: 600; font-size: 1.05rem; }
.card-icon { font-size: 1.3rem; }
.card-body { padding: 24px; }
.fact { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); }
.fact:last-child { border-bottom: none; }
.fact-label { color: var(--text-muted); font-size: 0.9rem; }
.fact-value { color: var(--text); font-weight: 500; font-size: 0.9rem; }
.about-card .btn { margin: 0 24px 24px; width: calc(100% - 48px); }

/* === SERVICES === */
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.service-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; transition: var(--transition); position: relative; }
.service-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: 0 20px 40px rgba(0,0,0,.3); }
.service-card.featured { border-color: var(--primary); background: linear-gradient(135deg, rgba(0,255,136,0.03), rgba(0,212,255,0.03)); }
.service-badge { position: absolute; top: 16px; right: 16px; background: var(--primary); color: var(--bg); font-size: 0.75rem; font-weight: 700; padding: 4px 12px; border-radius: 100px; }
.service-icon { width: 56px; height: 56px; background: var(--primary-glow); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; color: var(--primary); }
.service-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.service-card p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 20px; }
.service-list li { color: var(--text-muted); font-size: 0.9rem; padding: 6px 0; padding-left: 20px; position: relative; }
.service-list li::before { content: '→'; color: var(--primary); position: absolute; left: 0; }
.project-link { color: var(--primary); font-weight: 600; font-size: 0.9rem; margin-top: 16px; display: inline-block; transition: var(--transition); }
.project-link:hover { color: var(--primary-dim); transform: translateX(4px); }

/* === SKILLS === */
.skills-categories { display: flex; flex-direction: column; gap: 40px; }
.category-title { font-size: 1.2rem; font-weight: 700; display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.category-icon { font-size: 1.3rem; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 12px; }
.skill-tag { background: var(--bg-card); border: 1px solid var(--border); color: var(--text-muted); padding: 8px 20px; border-radius: 100px; font-size: 0.9rem; font-weight: 500; transition: var(--transition); }
.skill-tag:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-glow); }

/* === BLOG === */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.blog-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; transition: var(--transition); cursor: pointer; }
.blog-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.blog-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.blog-date { color: var(--text-dim); font-size: 0.85rem; }
.blog-tag { background: var(--primary-glow); color: var(--primary); padding: 4px 12px; border-radius: 100px; font-size: 0.8rem; font-weight: 500; }
.blog-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; line-height: 1.4; }
.blog-card p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; }
.blog-link { color: var(--primary); font-weight: 600; font-size: 0.9rem; }

/* === CONTACT === */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px; }
.contact-info { display: flex; flex-direction: column; gap: 28px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-icon { width: 48px; height: 48px; background: var(--primary-glow); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: var(--primary); flex-shrink: 0; }
.contact-item h4 { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 4px; font-weight: 500; }
.contact-item a, .contact-item span { color: var(--text); font-size: 1rem; }
.social-links { display: flex; gap: 16px; margin-top: 16px; }
.social-link { width: 44px; height: 44px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--text-muted); transition: var(--transition); }
.social-link:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-glow); }
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group label { display: block; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 8px; font-weight: 500; }
.form-group input, .form-group select, .form-group textarea { width: 100%; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px 16px; color: var(--text); font-size: 0.95rem; font-family: var(--font); transition: var(--transition); resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-glow); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-dim); }
.form-group select { appearance: none; cursor: pointer; }

/* === FOOTER === */
.footer { padding: 40px 0; border-top: 1px solid var(--border); position: relative; z-index: 1; }
.footer-content { text-align: center; }
.footer p { color: var(--text-muted); font-size: 0.9rem; }
.footer-sub { font-size: 0.8rem; color: var(--text-dim); margin-top: 8px; }

/* === ANIMATIONS === */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { opacity: 0; transform: translateY(30px); transition: all 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* === RESPONSIVE === */
@media (max-width: 968px) {
    .hero { grid-template-columns: 1fr; gap: 40px; padding-top: 100px; }
    .hero-visual { order: -1; }
    .about-grid { grid-template-columns: 1fr; }
    .about-card { position: static; }
    .services-grid { grid-template-columns: 1fr; }
    .blog-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; background: rgba(10,10,15,0.98); padding: 24px; flex-direction: column; gap: 16px; border-bottom: 1px solid var(--border); }
    .nav-links.active { display: flex; }
    .nav-toggle { display: flex; }
    .hero-title { font-size: 2rem; }
    .hero-stats { flex-wrap: wrap; gap: 20px; }
    .stat-divider { display: none; }
    .hero-actions { flex-direction: column; }
    .btn { width: 100%; justify-content: center; }
    .section { padding: 60px 0; }
}