*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* Self-hosted fonts — Inter (variable, latin + subsets) */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300 800;
    font-display: swap;
    src: url('/inter-cyrillic-ext.woff2') format('woff2');
    unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300 800;
    font-display: swap;
    src: url('/inter-cyrillic.woff2') format('woff2');
    unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300 800;
    font-display: swap;
    src: url('/inter-greek-ext.woff2') format('woff2');
    unicode-range: U+1F00-1FFF;
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300 800;
    font-display: swap;
    src: url('/inter-greek.woff2') format('woff2');
    unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300 800;
    font-display: swap;
    src: url('/inter-vietnamese.woff2') format('woff2');
    unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300 800;
    font-display: swap;
    src: url('/inter-latin-ext.woff2') format('woff2');
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300 800;
    font-display: swap;
    src: url('/inter-latin.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Self-hosted fonts — JetBrains Mono (variable, latin + subsets) */
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 300 700;
    font-display: swap;
    src: url('/jetbrains-cyrillic-ext.woff2') format('woff2');
    unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 300 700;
    font-display: swap;
    src: url('/jetbrains-cyrillic.woff2') format('woff2');
    unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 300 700;
    font-display: swap;
    src: url('/jetbrains-greek.woff2') format('woff2');
    unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 300 700;
    font-display: swap;
    src: url('/jetbrains-vietnamese.woff2') format('woff2');
    unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 300 700;
    font-display: swap;
    src: url('/jetbrains-latin-ext.woff2') format('woff2');
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 300 700;
    font-display: swap;
    src: url('/jetbrains-latin.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Accessibility utilities */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    padding: 0.5rem 1rem;
    background: var(--neon);
    color: #000;
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: 0 0 4px 4px;
    text-decoration: none;
    z-index: 10000;
    transition: top 0.2s;
}
.skip-link:focus {
    top: 0;
}

:root {
    --neon: #ff6b35;
    --neon-dim: rgba(255, 107, 53, 0.15);
    --neon-glow: rgba(255, 107, 53, 0.4);
    --cyan: #00d4aa;
    --magenta: #ff6b9d;
    --dark-bg: #0d1117;
    --card-bg: rgba(22, 27, 34, 0.7);
    --card-border: rgba(255, 107, 53, 0.15);
    --text: #c9d1d9;
    --text-dim: #8b949e;
    --gradient-1: linear-gradient(135deg, #ff6b35, #ff9f1c);

    --nav-bg: rgba(13, 17, 23, 0.9);
    --mobile-bg: rgba(13, 17, 23, 0.98);
    --terminal-bg: rgba(22, 27, 34, 0.95);
    --terminal-header-bg: rgba(255, 255, 255, 0.03);
    --border-light: rgba(255, 255, 255, 0.15);
    --border-icon: rgba(255, 255, 255, 0.1);
    --tag-bg: rgba(255, 107, 53, 0.06);
    --tag-border: rgba(255, 107, 53, 0.1);
    --project-tech-bg: rgba(0, 212, 170, 0.08);
    --project-tech-border: rgba(0, 212, 170, 0.15);
    --bg-gradient:
        radial-gradient(ellipse at 20% 50%, rgba(255, 107, 53, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 212, 170, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(255, 107, 157, 0.02) 0%, transparent 50%);
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text);
    background: var(--dark-bg);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: var(--bg-gradient);
    z-index: 0;
    pointer-events: none;
}

#particles {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
}
.scanlines {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 1;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 107, 53, 0.005) 2px, rgba(255, 107, 53, 0.005) 4px);
}
@media (prefers-reduced-motion: reduce) {
    #particles, .scanlines { display: none; }
}

main {
    position: relative;
    z-index: 2;
}

/* NAV */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 0 2rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav.scrolled {
    background: var(--nav-bg);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--card-border);
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}
.logo {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--neon);
    text-shadow: 0 0 10px var(--neon-glow);
    text-decoration: none;
}
.logo .cursor {
    display: inline-block;
    width: 2px; height: 1.2em;
    background: var(--neon);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 1s step-end infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.nav-links { display: flex; gap: 2rem; align-items: center; list-style: none; }
.nav-link {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.25rem 0;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 0; height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s ease;
}
.nav-link:hover { color: var(--neon); }
.nav-link:hover::after { width: 100%; }

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
    z-index: 1001;
}
.hamburger span {
    width: 24px; height: 2px;
    background: var(--neon);
    transition: all 0.3s ease;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-menu {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--mobile-bg);
    backdrop-filter: blur(20px);
    z-index: 999;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 2rem;
}
.mobile-menu.active { display: flex; }
.mobile-menu a {
    color: var(--text);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 600;
    transition: color 0.3s;
}
.mobile-menu a:hover { color: var(--neon); }

/* HERO */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
    padding: 80px 2rem 1rem;
}
.hero-inner {
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background: var(--neon-dim);
    border: 1px solid var(--card-border);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--neon);
    margin-bottom: 1.5rem;
    font-family: 'JetBrains Mono', monospace;
}
.hero-badge .dot {
    width: 6px; height: 6px;
    background: var(--neon);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.8); } }

.hero-greeting {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    color: var(--cyan);
    margin-bottom: 0.75rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.2s;
}
.hero-name {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 0.75rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.4s;
}
.hero-name .glitch {
    position: relative;
    display: inline-block;
    color: var(--neon);
    text-shadow: 0 0 10px var(--neon-glow);
    animation: glitch-main 4s infinite;
    -webkit-text-fill-color: var(--neon);
    background: none;
}
.hero-name .glitch::before, .hero-name .glitch::after {
    content: none;
}
@keyframes glitch-main {
    0%, 2%, 4%, 6%, 8%, 10%, 14%, 18%, 20%, 40%, 42%, 44%, 46%, 48%, 50%, 70%, 72%, 74%, 76%, 78%, 80%, 100% { transform: translate(0) skewX(0); }
    1% { transform: translate(-5px, 3px) skewX(1deg); }
    3% { transform: translate(4px, -2px) skewX(-1deg); }
    5% { transform: translate(-3px, -3px) skewX(2deg); }
    7% { transform: translate(6px, 1px) skewX(2deg); }
    9% { transform: translate(0) skewX(0); }
    15% { transform: translate(-2px, 4px) skewX(-1deg); }
    17% { transform: translate(3px, -1px) skewX(1deg); }
    19% { transform: translate(0) skewX(0); }
    41% { transform: translate(4px, 2px) skewX(-2deg); }
    43% { transform: translate(-6px, -1px) skewX(3deg); }
    45% { transform: translate(5px, 3px) skewX(-2deg); }
    47% { transform: translate(-3px, -2px) skewX(1deg); }
    49% { transform: translate(0) skewX(0); }
    71% { transform: translate(3px, -3px) skewX(2deg); }
    73% { transform: translate(-4px, 2px) skewX(2deg); }
    75% { transform: translate(5px, 1px) skewX(-1deg); }
    77% { transform: translate(-2px, -4px) skewX(1deg); }
    79% { transform: translate(0) skewX(0); }
}

/* Glitch effect on hover for cards */
.skill-card:hover {
    animation: glitch-shake 0.3s ease;
    border-color: var(--neon);
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.2);
}
.project-card:hover {
    animation: glitch-shake 0.3s ease;
    border-color: var(--neon);
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.2);
}
.philosophy-card:hover {
    animation: glitch-shake 0.3s ease;
    border-color: var(--neon);
}
@keyframes glitch-shake {
    0%, 100% { transform: translate(0); }
    10% { transform: translate(-3px, 1px); }
    20% { transform: translate(3px, -2px); }
    30% { transform: translate(-2px, 3px); }
    40% { transform: translate(2px, -1px); }
    50% { transform: translate(-1px, 2px); }
    60% { transform: translate(3px, -2px); }
    70% { transform: translate(-2px, 1px); }
    80% { transform: translate(1px, -3px); }
    90% { transform: translate(-3px, 2px); }
}

/* Terminal title glitch on hover */
.terminal-window:hover .terminal-title {
    animation: glitch-text 0.15s steps(3) infinite;
}
@keyframes glitch-text {
    0%, 100% { opacity: 1; transform: translate(0); }
    25% { opacity: 0.7; transform: translate(2px, -1px); }
    50% { opacity: 0.9; transform: translate(-1px, 1px); }
    75% { opacity: 0.6; transform: translate(1px, 0); }
}

/* Stat numbers glitch on hover */
.stat-card:hover .stat-number {
    animation: stat-glitch 0.4s ease;
    text-shadow: 0 0 20px var(--neon-glow);
}
@keyframes stat-glitch {
    0%, 100% { transform: translate(0) skewX(0deg); }
    15% { transform: translate(-4px, 2px) skewX(5deg); }
    30% { transform: translate(3px, -3px) skewX(-3deg); }
    45% { transform: translate(-5px, 1px) skewX(4deg); }
    60% { transform: translate(4px, -2px) skewX(-5deg); }
    75% { transform: translate(-2px, 3px) skewX(2deg); }
}

/* Nav logo glitch on hover */
.nav .logo:hover {
    animation: glitch-logo 0.3s steps(2) infinite;
}
@keyframes glitch-logo {
    0%, 100% { transform: translate(0); }
    25% { transform: translate(-2px, 1px); }
    50% { transform: translate(2px, -1px); }
    75% { transform: translate(-1px, -1px); }
}

/* Button glitch on hover */
.btn-primary:hover {
    animation: glitch-btn 0.25s steps(2);
    box-shadow: 0 0 30px var(--neon-glow), 0 10px 40px rgba(255, 107, 53, 0.15);
}
@keyframes glitch-btn {
    0%, 100% { transform: translateY(-2px) translate(0) skewX(0deg); }
    20% { transform: translateY(-2px) translate(-3px, 1px) skewX(3deg); }
    40% { transform: translateY(-2px) translate(2px, -1px) skewX(-2deg); }
    60% { transform: translateY(-2px) translate(-1px, 2px) skewX(2deg); }
    80% { transform: translateY(-2px) translate(3px, -1px) skewX(-1deg); }
}

/* Neon flicker for section labels */
.section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--cyan);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 0.75rem;
    animation: neon-pulse 4s ease-in-out infinite;
}
@keyframes neon-pulse {
    0%, 100% { opacity: 1; }
    92% { opacity: 1; }
    93% { opacity: 0.4; }
    94% { opacity: 1; }
    95% { opacity: 0.6; }
    96% { opacity: 1; }
}

/* Flickering dot on hero badge */
.hero-badge .dot {
    width: 6px; height: 6px;
    background: var(--neon);
    border-radius: 50%;
    animation: flicker 4s ease-in-out infinite;
    box-shadow: 0 0 6px var(--neon-glow);
}
@keyframes flicker {
    0%, 100% { opacity: 1; }
    92% { opacity: 1; }
    92.5% { opacity: 0.3; }
    93% { opacity: 1; }
    93.5% { opacity: 0.4; }
    94% { opacity: 1; }
}

.hero-title {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 600;
    color: var(--text-dim);
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.6s;
}
.hero-description {
    font-size: 1.05rem;
    color: var(--text-dim);
    line-height: 1.8;
    max-width: 520px;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.8s;
}
.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 1s;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    background: var(--neon);
    color: var(--dark-bg);
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-primary:hover {
    box-shadow: 0 0 30px var(--neon-glow), 0 10px 40px rgba(255, 107, 53, 0.15);
    transform: translateY(-2px);
}
.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-outline:hover {
    border-color: var(--neon);
    color: var(--neon);
    background: var(--neon-dim);
    transform: translateY(-2px);
}
.hero-socials {
    display: flex;
    gap: 1rem;
    margin-top: 2.5rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 1.2s;
}
.social-link {
    width: 42px; height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-icon);
    border-radius: 10px;
    color: var(--text-dim);
    text-decoration: none;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}
.social-link:hover {
    border-color: var(--neon);
    color: var(--neon);
    background: var(--neon-dim);
    transform: translateY(-3px);
}

/* TERMINAL */
.hero-visual {
    position: relative;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.6s;
}
.terminal-window {
    background: var(--terminal-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(255, 107, 53, 0.03);
    display: flex;
    flex-direction: column;
}
.terminal-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1rem;
    background: var(--terminal-header-bg);
    border-bottom: 1px solid var(--card-border);
    flex-shrink: 0;
}
.terminal-dot { width: 12px; height: 12px; border-radius: 50%; }
.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #28ca42; }
.terminal-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-left: 0.5rem;
}
.terminal-body {
    padding: 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--neon);
    height: 320px;
    overflow-y: auto;
    flex-grow: 1;
}
.terminal-body::-webkit-scrollbar { width: 6px; }
.terminal-body::-webkit-scrollbar-track { background: transparent; }
.terminal-body::-webkit-scrollbar-thumb { background: var(--card-border); border-radius: 3px; }
.terminal-line { margin-bottom: 0.25rem; white-space: pre-wrap; word-break: break-word; }
.terminal-prompt { color: var(--cyan); }
.terminal-command { color: var(--text); }
.terminal-output { color: var(--neon); opacity: 0.9; }
.terminal-error { color: #ff6b6b; }
.terminal-success { color: var(--cyan); }
.terminal-input-line {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.terminal-input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    flex-grow: 1;
    caret-color: var(--neon);
}
.terminal-cursor {
    display: inline-block;
    width: 8px; height: 1.1em;
    background: var(--neon);
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom;
}

/* STATS */
.stats-bar {
    position: relative;
    z-index: 2;
    padding: 2rem 2rem;
}
.stats-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}
.stat-card {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}
.stat-card:hover {
    border-color: var(--neon-glow);
    transform: translateY(-4px);
}
.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-label {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-top: 0.25rem;
}

/* MARQUEE */
.certs-section {
    position: relative;
    z-index: 2;
    padding: 2rem 0;
    border-top: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
    overflow: hidden;
}
.certs-track {
    display: flex;
    gap: 3rem;
    animation: scroll 30s linear infinite;
    width: max-content;
}
.cert-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    white-space: nowrap;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-dim);
    padding: 0.6rem 1.25rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 100px;
}
.cert-icon { color: var(--neon); font-size: 1rem; }
@keyframes scroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* SECTIONS */
.section {
    position: relative;
    z-index: 2;
    padding: 3rem 2rem;
}
.section-header {
    text-align: center;
    margin-bottom: 2.5rem;
}
.section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--cyan);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 0.75rem;
}
.section-title {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    font-weight: 800;
}
.section-title .accent {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* SKILLS */
.skills-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}
.skill-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}
.skill-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.3s;
}
.skill-card:hover {
    border-color: var(--neon-glow);
    transform: translateY(-6px);
}
.skill-card:hover::before { opacity: 1; }
.skill-icon {
    width: 48px; height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--neon-dim);
    border-radius: 12px;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    color: var(--neon);
}
.skill-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}
.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.skill-tag {
    padding: 0.3rem 0.75rem;
    background: var(--tag-bg);
    border: 1px solid var(--tag-border);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-dim);
    font-family: 'JetBrains Mono', monospace;
}
.skill-tag:hover {
    background: var(--neon-dim);
    border-color: var(--neon-glow);
    color: var(--neon);
}

/* PROJECTS */
.projects-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
}
.project-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
}
.project-card:hover {
    border-color: var(--neon-glow);
    transform: translateY(-6px);
}
.project-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--cyan);
    margin-bottom: 0.75rem;
}
.project-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}
.project-card p {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.7;
    flex-grow: 1;
}
.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 1.25rem;
}
.project-tech span {
    padding: 0.2rem 0.6rem;
    background: var(--project-tech-bg);
    border: 1px solid var(--project-tech-border);
    border-radius: 4px;
    font-size: 0.7rem;
    color: var(--cyan);
    font-family: 'JetBrains Mono', monospace;
}

/* PHILOSOPHY */
.philosophy-grid {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}
.philosophy-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}
.philosophy-card:hover {
    border-color: var(--neon-glow);
    transform: translateY(-4px);
}
.philosophy-card .emoji { font-size: 2rem; margin-bottom: 0.75rem; color: var(--neon); }
.philosophy-card h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.philosophy-card p { font-size: 0.85rem; color: var(--text-dim); }

/* FOOTER */
.footer {
    position: relative;
    z-index: 2;
    border-top: 1px solid var(--card-border);
    padding: 3rem 2rem;
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}
.footer-left {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-dim);
}
.footer-links { display: flex; gap: 1.5rem; }
.footer-link {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s;
}
.footer-link:hover { color: var(--neon); }

/* ANIMATIONS */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* RESPONSIVE */
@media (max-width: 968px) {
    .hero-inner { grid-template-columns: 1fr; gap: 3rem; text-align: center; }
    .hero-description { margin-left: auto; margin-right: auto; }
    .hero-cta, .hero-socials { justify-content: center; }
    .stats-inner { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hamburger { display: flex; }
    .hero { padding: 5rem 1.25rem 2rem; }
    .section { padding: 3.5rem 1.25rem; }
    .stats-inner { gap: 1rem; }
    .stat-card { padding: 1.25rem 0.75rem; }
    .stat-number { font-size: 2rem; }
    .projects-grid { grid-template-columns: 1fr; }
    .footer-inner { flex-direction: column; text-align: center; }
    .terminal-body { height: 300px; }
}

/* EMAIL — CSS-assembled from data attributes, never a full string in DOM */
.email-obfuscated::before {
    content: attr(data-a) attr(data-b) attr(data-c);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--neon);
}
.email-obfuscated:hover::before {
    text-decoration: underline;
}

/* THEME TOGGLE */
.theme-toggle {
    background: none;
    border: 1px solid var(--border-icon);
    border-radius: 8px;
    color: var(--text-dim);
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.3s ease;
}
.theme-toggle:hover {
    color: var(--neon);
    border-color: var(--neon);
    background: var(--neon-dim);
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 0.4rem 0.75rem;
    background: var(--neon);
    color: #000;
    border: none;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 12px var(--neon-glow);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px var(--neon-glow);
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 1.5rem;
        right: 1rem;
    }
}

/* Narrow mobile: prevent terminal overflow, tighten hero */
@media (max-width: 480px) {
    .hero { padding: 4.5rem 1rem 1.5rem; }
    .hero-name { font-size: 3.5rem; }
    .hero-title { font-size: 1rem; }
    .hero-description { font-size: 0.875rem; }
    .terminal-window { max-width: 100%; overflow-x: hidden; }
    .terminal-body { font-size: 0.72rem; }
    .terminal-title { font-size: 0.7rem; }
    .section { padding: 2.5rem 1rem; }
    .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
    .stat-number { font-size: 1.75rem; }
}

/* LIGHT THEME */
[data-theme="light"] {
    --neon: #d04d1a;
    --neon-dim: rgba(208, 77, 26, 0.1);
    --neon-glow: rgba(208, 77, 26, 0.2);
    --cyan: #008a6a;
    --magenta: #c0396b;
    --dark-bg: #f5f0eb;
    --card-bg: rgba(255, 255, 255, 0.8);
    --card-border: rgba(208, 77, 26, 0.12);
    --text: #1a1a2e;
    --text-dim: #6b7280;
    --gradient-1: linear-gradient(135deg, #d04d1a, #e87830);

    --nav-bg: rgba(245, 240, 235, 0.9);
    --mobile-bg: rgba(245, 240, 235, 0.98);
    --terminal-bg: rgba(255, 255, 255, 0.95);
    --terminal-header-bg: rgba(0, 0, 0, 0.03);
    --border-light: rgba(0, 0, 0, 0.12);
    --border-icon: rgba(0, 0, 0, 0.08);
    --tag-bg: rgba(208, 77, 26, 0.06);
    --tag-border: rgba(208, 77, 26, 0.1);
    --project-tech-bg: rgba(0, 138, 106, 0.08);
    --project-tech-border: rgba(0, 138, 106, 0.15);
    --bg-gradient:
        radial-gradient(ellipse at 20% 50%, rgba(208, 77, 26, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 138, 106, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(208, 77, 26, 0.03) 0%, transparent 50%);
}

[data-theme="light"] .btn-primary {
    color: #fff;
}

[data-theme="light"] .terminal-window {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12), 0 0 40px rgba(208, 77, 26, 0.03);
}

[data-theme="light"] .scanlines {
    display: none;
}

/* BLOG POST */
.blog-post {
    min-height: 60vh;
}

.blog-post-container {
    max-width: 740px;
    margin: 0 auto;
}

.blog-post-header {
    margin-bottom: 3rem;
}

.blog-back {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-dim);
    text-decoration: none;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    transition: color 0.2s;
}

.blog-back:hover {
    color: var(--neon);
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.blog-date {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-dim);
}

.blog-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.blog-excerpt {
    font-size: 1.15rem;
    color: var(--text-dim);
    line-height: 1.7;
    border-left: 3px solid var(--neon);
    padding-left: 1.25rem;
}

.blog-post-body {
    line-height: 1.8;
    font-size: 1.05rem;
    color: var(--text);
}

.blog-post-body h2 {
    font-size: 1.65rem;
    font-weight: 700;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--card-border);
    scroll-margin-top: 6rem;
}

.blog-post-body h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 2rem 0 0.75rem;
    scroll-margin-top: 6rem;
}

.blog-post-body h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 1.5rem 0 0.5rem;
}

.blog-post-body h2 .anchor,
.blog-post-body h3 .anchor,
.blog-post-body h4 .anchor {
    color: inherit;
    text-decoration: none;
}

.blog-post-body h2 .anchor::before,
.blog-post-body h3 .anchor::before,
.blog-post-body h4 .anchor::before {
    content: "#";
    position: absolute;
    margin-left: -1.2rem;
    opacity: 0;
    color: var(--neon);
    font-weight: 400;
    transition: opacity 0.15s;
}

.blog-post-body h2:hover .anchor::before,
.blog-post-body h3:hover .anchor::before,
.blog-post-body h4:hover .anchor::before {
    opacity: 1;
}

.blog-post-body p {
    margin-bottom: 1.25rem;
}

.blog-post-body p code,
.blog-post-body li code {
    background: var(--tag-bg);
    border: 1px solid var(--tag-border);
    border-radius: 4px;
    padding: 0.15rem 0.4rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85em;
    color: var(--neon);
}

.blog-post-body blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    border-left: 3px solid var(--cyan);
    background: var(--card-bg);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--text-dim);
    font-size: 1rem;
    line-height: 1.7;
}

.blog-post-body blockquote p {
    margin-bottom: 0;
}

.blog-post-body blockquote strong {
    color: var(--text);
    font-style: normal;
}

.blog-post-body ul,
.blog-post-body ol {
    margin: 0 0 1.25rem 1.5rem;
    line-height: 1.8;
}

.blog-post-body li {
    margin-bottom: 0.4rem;
}

.blog-post-body figure {
    margin: 2rem 0;
    text-align: center;
}

.blog-post-body figure img {
    max-width: 100%;
    border-radius: 8px;
    border: 1px solid var(--card-border);
}

.blog-post-body figure figcaption {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-dim);
    font-style: italic;
}

.code-block-wrapper {
    margin: 1.5rem 0;
    border: 1px solid var(--card-border);
    border-radius: 10px;
    overflow: hidden;
    background: #0d1117;
}

.code-header {
    padding: 0.6rem 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-dim);
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid var(--card-border);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.code-block-wrapper pre {
    padding: 1.25rem;
    margin: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.code-block-wrapper code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    color: #e6edf3;
    white-space: pre;
}

.code-block-wrapper pre::-webkit-scrollbar { height: 6px; }
.code-block-wrapper pre::-webkit-scrollbar-track { background: transparent; }
.code-block-wrapper pre::-webkit-scrollbar-thumb { background: var(--card-border); border-radius: 3px; }

.table-wrapper {
    margin: 1.5rem 0;
    overflow-x: auto;
    border: 1px solid var(--card-border);
    border-radius: 10px;
}

.table-wrapper table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.table-wrapper th {
    background: var(--card-bg);
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
    border-bottom: 1px solid var(--card-border);
}

.table-wrapper td {
    padding: 0.7rem 1rem;
    border-bottom: 1px solid var(--card-border);
    color: var(--text);
}

.table-wrapper tr:last-child td {
    border-bottom: none;
}

.table-wrapper td:first-child {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--neon);
    white-space: nowrap;
}

.callout {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    border-radius: 10px;
    border-left: 3px solid;
    font-size: 0.95rem;
    line-height: 1.7;
}

.callout p {
    margin-bottom: 0;
}

.callout strong {
    color: var(--text);
}

.callout-tip {
    background: var(--project-tech-bg);
    border-color: var(--cyan);
}

.callout-tip p {
    color: var(--text-dim);
}

.callout-warn {
    background: rgba(255, 107, 53, 0.06);
    border-color: var(--neon);
}

.callout-warn p {
    color: var(--text-dim);
}

.blog-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--card-border);
}

.blog-footer p {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-bottom: 1rem;
}

.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

@media (max-width: 768px) {
    .blog-post {
        padding: 6rem 1.25rem 2rem;
    }
    .blog-title {
        font-size: 1.75rem;
    }
    .blog-excerpt {
        font-size: 1rem;
        padding-left: 1rem;
    }
    .blog-post-body {
        font-size: 0.95rem;
    }
    .blog-post-body h2 {
        font-size: 1.35rem;
    }
    .blog-post-body h3 {
        font-size: 1.15rem;
    }
    .code-block-wrapper pre {
        padding: 1rem;
    }
    .table-wrapper {
        font-size: 0.8rem;
    }
    .table-wrapper th,
    .table-wrapper td {
        padding: 0.5rem 0.75rem;
    }
}