/* ============================================
   THEME VARIABLES
   ============================================ */
:root {
    --font-sans: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius: 16px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-theme="dark"] {
    --bg: #050508;
    --bg-2: #0a0a12;
    --bg-card: rgba(13, 17, 23, 0.7);
    --bg-glass: rgba(13, 17, 23, 0.5);
    --border: rgba(0, 255, 65, 0.1);
    --text: #e6edf3;
    --text-2: #8b949e;
    --text-3: #484f58;
    --accent: #00ff41;
    --accent-glow: rgba(0, 255, 65, 0.35);
    --accent-blue: #00d4ff;
    --accent-purple: #bd00ff;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --nav-bg: rgba(5, 5, 8, 0.8);
    --canvas-opacity: 0.06;
}

[data-theme="light"] {
    --bg: #f0f4f8;
    --bg-2: #e2e8f0;
    --bg-card: rgba(255, 255, 255, 0.75);
    --bg-glass: rgba(255, 255, 255, 0.6);
    --border: rgba(0, 100, 30, 0.15);
    --text: #1a202c;
    --text-2: #4a5568;
    --text-3: #a0aec0;
    --accent: #059669;
    --accent-glow: rgba(5, 150, 105, 0.25);
    --accent-blue: #0284c7;
    --accent-purple: #7c3aed;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --nav-bg: rgba(240, 244, 248, 0.85);
    --canvas-opacity: 0.03;
}

/* ============================================
   BASE
   ============================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text-2);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background var(--transition), color var(--transition);
}
::selection { background: var(--accent-glow); color: var(--text); }
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 10px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { padding: 120px 24px; position: relative; z-index: 1; }
strong { color: var(--text); }
.accent { color: var(--accent); }
.accent-blue { color: var(--accent-blue); }

/* ============================================
   SCROLL PROGRESS
   ============================================ */
#scroll-progress {
    position: fixed; top: 0; left: 0; height: 3px; z-index: 9999;
    background: linear-gradient(90deg, var(--accent), var(--accent-blue), var(--accent-purple));
    width: 0; transition: none;
}

/* ============================================
   PARTICLE CANVAS
   ============================================ */
#particle-canvas {
    position: fixed; inset: 0; z-index: 0;
    pointer-events: none;
    opacity: var(--canvas-opacity);
    transition: opacity var(--transition);
}

/* ============================================
   GLASS CARD
   ============================================ */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition);
}
.glass-card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px var(--accent-glow), var(--shadow);
    transform: translateY(-4px);
}

/* ============================================
   NAVIGATION
   ============================================ */
#navbar {
    position: fixed; top: 0; width: 100%; z-index: 100;
    padding: 16px 0;
    transition: all var(--transition);
}
#navbar.scrolled {
    background: var(--nav-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}
.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-weight: 700; font-size: 1.15rem;
    color: var(--accent); text-decoration: none;
    transition: text-shadow var(--transition);
}
.nav-logo:hover { text-shadow: 0 0 20px var(--accent-glow); }
.nav-links { display: flex; gap: 32px; }
.nav-link {
    text-decoration: none; color: var(--text-2); font-size: 0.88rem; font-weight: 500;
    position: relative; transition: color var(--transition);
}
.nav-link::after {
    content: ''; position: absolute; bottom: -6px; left: 0; width: 0; height: 2px;
    background: var(--accent); border-radius: 1px; transition: width 0.3s ease;
}
.nav-link:hover, .nav-link.active { color: var(--accent); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-right { display: flex; align-items: center; gap: 12px; }

/* Theme Toggle */
.theme-btn {
    width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--border);
    background: var(--bg-glass); backdrop-filter: blur(8px);
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    color: var(--text-2); font-size: 1rem; transition: all var(--transition); position: relative;
}
.theme-btn:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 20px var(--accent-glow); }
.theme-btn i { position: absolute; transition: all 0.5s ease; }
[data-theme="dark"] #theme-icon-sun { opacity: 1; transform: rotate(0); }
[data-theme="dark"] #theme-icon-moon { opacity: 0; transform: rotate(180deg); }
[data-theme="light"] #theme-icon-sun { opacity: 0; transform: rotate(-180deg); }
[data-theme="light"] #theme-icon-moon { opacity: 1; transform: rotate(0); }

/* Mobile Toggle */
.mobile-btn {
    display: none; width: 44px; height: 44px; border: none; background: none;
    cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.mobile-btn span {
    display: block; width: 22px; height: 2px; background: var(--text-2);
    border-radius: 2px; transition: all 0.3s ease;
}
.mobile-btn.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-btn.active span:nth-child(2) { opacity: 0; }
.mobile-btn.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================
   HERO
   ============================================ */
#hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    text-align: center; padding: 120px 24px 60px; position: relative;
}
.hero-content { max-width: 800px; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 10px;
    font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 2px;
    color: var(--accent); padding: 8px 20px;
    border: 1px solid var(--border); border-radius: 50px;
    background: var(--bg-glass); backdrop-filter: blur(8px); margin-bottom: 32px;
}
.badge-dot {
    width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
    animation: pulse-dot 2s ease infinite;
}
@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
    50% { box-shadow: 0 0 0 8px transparent; }
}
.hero-name {
    font-size: clamp(3rem, 8vw, 6rem); font-weight: 900; color: var(--text);
    line-height: 1.1; margin-bottom: 16px; letter-spacing: -2px;
    text-shadow: 0 0 40px var(--accent-glow);
}
.hero-role {
    font-size: clamp(1rem, 2.5vw, 1.4rem); font-weight: 600; color: var(--accent-blue);
    margin-bottom: 20px;
}
.hero-role .separator { color: var(--text-3); margin: 0 8px; }
.hero-terminal {
    font-family: var(--font-mono); font-size: 0.9rem; color: var(--accent);
    margin-bottom: 12px; min-height: 28px;
}
.hero-terminal .prompt { color: var(--text-3); margin-right: 8px; }
.cursor { animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-tagline {
    font-size: 1.1rem; color: var(--text-2); font-style: italic;
    margin-bottom: 40px; opacity: 0.8;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.hero-socials { display: flex; gap: 12px; justify-content: center; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 32px; border-radius: 12px; font-weight: 700;
    font-size: 0.95rem; text-decoration: none; cursor: pointer;
    transition: all var(--transition); border: none; font-family: var(--font-sans);
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), #00cc33);
    color: #0a0a0f;
    box-shadow: 0 0 24px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 0 40px var(--accent-glow); }
.btn-outline {
    background: transparent;
    border: 2px solid var(--accent); color: var(--accent);
}
.btn-outline:hover {
    background: var(--accent-glow);
    transform: translateY(-3px);
    box-shadow: 0 0 30px var(--accent-glow);
}
.full-width { width: 100%; justify-content: center; }

/* Social Links */
.social-link {
    width: 48px; height: 48px; display: inline-flex; align-items: center; justify-content: center;
    border-radius: 50%; border: 1px solid var(--border); color: var(--text-2);
    text-decoration: none; font-size: 1.1rem; transition: all var(--transition);
    background: var(--bg-glass); backdrop-filter: blur(8px);
}
.social-link:hover {
    color: var(--accent); border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow); transform: translateY(-4px) scale(1.1);
}
.scroll-indicator {
    position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
    color: var(--accent); font-size: 1.2rem; text-decoration: none; opacity: 0.6;
    animation: float 2s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(12px); }
}

/* ============================================
   SECTION TITLES
   ============================================ */
.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; color: var(--text);
    text-align: center; margin-bottom: 64px; letter-spacing: -1px;
}
.title-num {
    font-family: var(--font-mono); color: var(--accent); font-size: 0.8em;
    margin-right: 8px;
}
.section-title::after {
    content: ''; display: block; width: 60px; height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-blue));
    margin: 20px auto 0; border-radius: 2px;
}

/* ============================================
   ABOUT
   ============================================ */
.about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
.about-text p { font-size: 1.05rem; margin-bottom: 20px; line-height: 1.8; }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat-card { padding: 28px 20px; text-align: center; }
.stat-value {
    font-family: var(--font-mono); font-size: 2.5rem; font-weight: 700;
    color: var(--accent); text-shadow: 0 0 20px var(--accent-glow);
}
.stat-value::after { content: '+'; }
.stat-label { color: var(--text-2); font-size: 0.8rem; margin-top: 4px; font-weight: 500; }

/* ============================================
   TIMELINE
   ============================================ */
.timeline { position: relative; max-width: 700px; margin: 0 auto; padding-left: 48px; }
.timeline::before {
    content: ''; position: absolute; left: 18px; top: 0; bottom: 0; width: 2px;
    background: linear-gradient(180deg, var(--accent), var(--accent-blue), var(--accent-purple));
    border-radius: 1px;
}
.tl-item { position: relative; margin-bottom: 32px; }
.tl-dot {
    position: absolute; left: -40px; top: 28px; width: 14px; height: 14px;
    border-radius: 50%; background: var(--accent); border: 3px solid var(--bg);
    box-shadow: 0 0 12px var(--accent-glow); z-index: 2;
}
.tl-card { padding: 28px; }
.tl-card:hover { transform: translateX(8px) translateY(-4px); }
.tl-date {
    font-family: var(--font-mono); font-size: 0.75rem; color: var(--accent);
    background: var(--accent-glow); padding: 4px 14px; border-radius: 20px;
    display: inline-block;
}
.tl-card h3 { color: var(--text); font-size: 1.15rem; margin-top: 12px; font-weight: 700; }
.tl-company { color: var(--accent-blue); font-weight: 600; font-size: 0.9rem; margin-top: 4px; }
.tl-desc { color: var(--text-2); font-size: 0.88rem; margin-top: 8px; }

/* ============================================
   ACHIEVEMENTS
   ============================================ */
.achievements-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.ach-card { padding: 32px 24px; text-align: center; }
.ach-icon {
    width: 64px; height: 64px; display: inline-flex; align-items: center; justify-content: center;
    border-radius: 50%; background: var(--accent-glow); color: var(--accent);
    font-size: 1.5rem; margin-bottom: 16px;
    transition: transform 0.4s ease;
}
.ach-card:hover .ach-icon { transform: scale(1.15) rotate(5deg); }
.ach-card h3 { color: var(--text); font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.ach-card p { font-size: 0.85rem; }

/* ============================================
   ADVISORIES
   ============================================ */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.adv-card { padding: 28px; }
.adv-critical { border-color: rgba(255, 68, 68, 0.25); }
.adv-critical:hover { box-shadow: 0 0 40px rgba(255, 68, 68, 0.2); }
.adv-high { border-color: rgba(255, 136, 0, 0.25); }
.adv-high:hover { box-shadow: 0 0 40px rgba(255, 136, 0, 0.2); }
.adv-moderate { border-color: rgba(255, 204, 0, 0.25); }
.adv-moderate:hover { box-shadow: 0 0 40px rgba(255, 204, 0, 0.2); }
.adv-badge {
    display: inline-block; font-family: var(--font-mono); font-size: 0.7rem;
    font-weight: 700; padding: 5px 14px; border-radius: 20px; letter-spacing: 1px;
}
.adv-badge.critical { background: rgba(255,68,68,0.15); color: #ff4444; }
.adv-badge.high { background: rgba(255,136,0,0.15); color: #ff8800; }
.adv-badge.moderate { background: rgba(255,204,0,0.15); color: #eebb00; }
.adv-card h3 { color: var(--text); font-size: 1.15rem; font-weight: 700; margin: 16px 0 8px; }
.adv-card p { font-size: 0.85rem; margin-bottom: 20px; }
.cvss-row { display: flex; align-items: center; gap: 12px; }
.cvss-score { font-family: var(--font-mono); font-size: 0.8rem; font-weight: 600; white-space: nowrap; }
.cvss-score.critical { color: #ff4444; }
.cvss-score.high { color: #ff8800; }
.cvss-score.moderate { color: #eebb00; }
.cvss-bar { flex: 1; height: 6px; background: rgba(255,255,255,0.08); border-radius: 3px; overflow: hidden; }
.cvss-fill {
    height: 100%; width: 0; border-radius: 3px; transition: width 1.5s ease 0.5s;
}
.cvss-fill[data-color="critical"] { background: linear-gradient(90deg, #ff4444, #ff6666); }
.cvss-fill[data-color="high"] { background: linear-gradient(90deg, #ff8800, #ffaa44); }
.cvss-fill[data-color="moderate"] { background: linear-gradient(90deg, #eebb00, #ffdd44); }
.cvss-fill.animated { width: var(--w); }

/* ============================================
   PROJECTS
   ============================================ */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.proj-card { padding: 32px 24px; display: flex; flex-direction: column; }
.proj-icon {
    width: 56px; height: 56px; display: inline-flex; align-items: center; justify-content: center;
    border-radius: 14px; background: rgba(0, 212, 255, 0.1); color: var(--accent-blue);
    font-size: 1.5rem; margin-bottom: 20px; transition: all 0.4s ease;
}
.proj-card:hover .proj-icon { transform: scale(1.1); box-shadow: 0 0 20px rgba(0, 212, 255, 0.3); }
.proj-card h3 { color: var(--text); font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.proj-card p { font-size: 0.88rem; margin-bottom: 16px; flex: 1; }
.proj-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.proj-tags span {
    font-family: var(--font-mono); font-size: 0.7rem; padding: 4px 10px;
    border-radius: 6px; background: rgba(0, 212, 255, 0.1); color: var(--accent-blue);
    border: 1px solid rgba(0, 212, 255, 0.2);
}
.proj-link {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--accent-blue); font-weight: 600; font-size: 0.88rem; text-decoration: none;
    transition: all 0.3s ease;
}
.proj-link:hover { color: var(--text); gap: 12px; }

/* ============================================
   SKILLS
   ============================================ */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.skill-cat { padding: 28px; }
.skill-cat h3 {
    color: var(--accent-purple); font-size: 1rem; font-weight: 700;
    margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid rgba(189, 0, 255, 0.15);
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tags span {
    font-size: 0.78rem; padding: 6px 14px; border-radius: 20px;
    background: rgba(189, 0, 255, 0.08); color: var(--accent-purple);
    border: 1px solid rgba(189, 0, 255, 0.15);
    transition: all 0.3s ease; cursor: default;
}
.skill-tags span:hover {
    background: rgba(189, 0, 255, 0.2); transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(189, 0, 255, 0.15);
}

/* ============================================
   CERTIFICATIONS
   ============================================ */
.certs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cert-card { padding: 28px; text-align: center; }
.cert-card i { font-size: 1.8rem; color: var(--accent); margin-bottom: 14px; display: block; }
.cert-card h3 { color: var(--text); font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.cert-card p { font-size: 0.82rem; }

/* ============================================
   CONTACT
   ============================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-intro { font-size: 1.1rem; color: var(--text); margin-bottom: 32px; line-height: 1.7; }
.info-item {
    display: flex; align-items: center; gap: 16px; margin-bottom: 24px;
}
.info-item i { color: var(--accent); font-size: 1.2rem; width: 20px; text-align: center; }
.info-item small { display: block; color: var(--text-3); font-size: 0.75rem; }
.info-item span { color: var(--text); font-weight: 500; }
.contact-socials { display: flex; gap: 12px; margin-top: 24px; }
.contact-socials a {
    width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center;
    border-radius: 50%; border: 1px solid var(--border); color: var(--text-2);
    text-decoration: none; transition: all var(--transition);
}
.contact-socials a:hover { color: var(--accent); border-color: var(--accent); box-shadow: 0 0 16px var(--accent-glow); transform: translateY(-3px); }

/* Contact Form */
.contact-form { padding: 32px; display: flex; flex-direction: column; gap: 16px; }
.contact-form input, .contact-form textarea {
    width: 100%; padding: 14px 18px; border-radius: 12px;
    border: 1px solid var(--border); background: var(--bg-glass);
    color: var(--text); font-family: var(--font-sans); font-size: 0.95rem;
    outline: none; transition: all var(--transition); backdrop-filter: blur(8px);
    resize: none;
}
.contact-form input:focus, .contact-form textarea:focus {
    border-color: var(--accent); box-shadow: 0 0 16px var(--accent-glow);
}
.contact-form input::placeholder, .contact-form textarea::placeholder { color: var(--text-3); }

/* ============================================
   FOOTER
   ============================================ */
footer {
    position: relative; z-index: 1;
    border-top: 1px solid var(--border); padding: 32px 24px;
    text-align: center;
}
footer p { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-3); }
.footer-sub { margin-top: 6px; font-size: 0.75rem; }

/* ============================================
   ANIMATIONS
   ============================================ */
.reveal-up, .reveal-left, .reveal-right { opacity: 0; transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal-up { transform: translateY(40px); }
.reveal-left { transform: translateX(-50px); }
.reveal-right { transform: translateX(50px); }
.reveal-up.visible, .reveal-left.visible, .reveal-right.visible { opacity: 1; transform: translate(0); }
.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }
.delay-4 { transition-delay: 0.6s; }
.delay-5 { transition-delay: 0.75s; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
    .nav-links { display: none; }
    .mobile-btn { display: flex; }
    .nav-links.open {
        display: flex; flex-direction: column; gap: 0;
        position: absolute; top: 100%; left: 0; width: 100%;
        background: var(--nav-bg); backdrop-filter: blur(24px);
        border-bottom: 1px solid var(--border); padding: 16px 24px;
    }
    .nav-links.open .nav-link { padding: 14px 0; border-bottom: 1px solid var(--border); }
    .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .achievements-grid, .adv-grid, .projects-grid, .skills-grid, .certs-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 600px) {
    section { padding: 80px 16px; }
    .achievements-grid, .adv-grid, .projects-grid, .skills-grid, .certs-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}