/* ===== CSS VARIABLES ===== */
:root {
    --bg: #0a0a0f;
    --bg-elevated: #12121a;
    --bg-card: #1a1a24;
    --bg-card-hover: #1e1e2d;
    --text: #e8e8f0;
    --text-muted: #8a8aa3;
    --text-dim: #5a5a75;
    --accent: #00d4aa;
    --accent-dim: rgba(0, 212, 170, 0.2);
    --accent-glow: rgba(0, 212, 170, 0.13);
    --accent-secondary: #00a8e8;
    --accent-tertiary: #7c3aed;
    --border: #252535;
    --border-light: #333344;
    --g1: #00d4aa;
    --g2: #00a8e8;
    --g3: #7c3aed;
    --success: #10b981;
    --warning: #f59e0b;
    color-scheme: dark;
}
html[data-theme="light"] {
    --bg: #f5f7fb;
    --bg-elevated: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --text: #101828;
    --text-muted: #475467;
    --text-dim: #667085;
    --accent: #008f78;
    --accent-dim: rgba(0, 143, 120, 0.16);
    --accent-glow: rgba(0, 143, 120, 0.10);
    --accent-secondary: #0878a8;
    --accent-tertiary: #6941c6;
    --border: #d9dee8;
    --border-light: #c6cedb;
    --g1: #008f78;
    --g2: #0878a8;
    --g3: #6941c6;
    --success: #0b8f5b;
    --warning: #c77700;
    color-scheme: light;
}
html[data-theme="light"] body { background: var(--bg); }

/* ===== RESET ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background-color .45s ease, color .45s ease;
}
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }
::selection { background: var(--accent-dim); color: var(--accent); }
img, svg, canvas { max-width: 100%; }

/* ===== NAV ===== */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 1rem 2rem;
    background: color-mix(in srgb, var(--bg) 86%, transparent);
    backdrop-filter: blur(20px) saturate(1.2);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}
nav.scrolled { background: color-mix(in srgb, var(--bg) 94%, transparent); box-shadow: 0 4px 30px rgba(0,0,0,.16); }
.nav-inner { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; min-height: 42px; }
.nav-logo { font-weight: 800; font-size: 1.1rem; color: var(--text); text-decoration: none; display: flex; align-items: center; gap: 0.65rem; flex: 0 0 auto; }
.nav-logo img { width: 38px; height: 38px; object-fit: cover; border-radius: 10px; border: 1px solid var(--border-light); box-shadow: 0 4px 16px rgba(0,168,232,0.16); flex-shrink: 0; }
.nav-logo .nav-logo-dot { color: var(--accent); }
.nav-actions { display: flex; align-items: center; gap: .8rem; margin-left: auto; }
.nav-links { display: flex; gap: 1.6rem; list-style: none; align-items: center; }
.nav-links a { color: var(--text-muted); text-decoration: none; font-size: 0.82rem; font-weight: 500; letter-spacing: 0.02em; transition: color 0.2s; position: relative; white-space: nowrap; }
.nav-links a:hover { color: var(--text); }
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: linear-gradient(90deg, var(--g1), var(--g2)); transition: width 0.3s ease; }
.nav-links a:hover::after { width: 100%; }
.nav-links a.nav-extras { color: var(--accent); border: 1px solid var(--accent-dim); padding: .3rem .8rem; border-radius: 8px; }
.nav-links a.nav-extras:hover { background: var(--accent-glow); }
.nav-links a.nav-extras::after { display: none; }

.mobile-menu-btn { display: none; width: 42px; height: 42px; padding: 0; border: 1px solid var(--border); border-radius: 10px; background: var(--bg-card); color: var(--text); align-items: center; justify-content: center; cursor: pointer; }
.menu-icon { width: 19px; height: 16px; display: flex; flex-direction: column; justify-content: space-between; }
.menu-icon span { display: block; width: 100%; height: 2px; border-radius: 2px; background: currentColor; transition: transform .3s ease, opacity .2s ease; }
.mobile-menu-btn.active .menu-icon span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-btn.active .menu-icon span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active .menu-icon span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1180px) {
    .mobile-menu-btn { display: inline-flex; }
    .nav-links { position: absolute; top: calc(100% + .6rem); left: 0; right: 0; z-index: 20; flex-direction: column; align-items: stretch; gap: 0; padding: .55rem; background: color-mix(in srgb, var(--bg-elevated) 96%, transparent); border: 1px solid var(--border); border-radius: 14px; box-shadow: 0 18px 50px rgba(0,0,0,.18); opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-8px) scale(.98); transition: opacity .25s ease, transform .25s ease; }
    .nav-links.active { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0) scale(1); }
    .nav-links li { width: 100%; }
    .nav-links a { display: block; padding: .8rem .85rem; border-radius: 9px; font-size: .9rem; }
    .nav-links a.nav-extras { margin: .3rem .5rem; }
}

/* ===== THEME TOGGLE ===== */
.theme-toggle { position: relative; width: 48px; height: 28px; flex: 0 0 auto; border: 1px solid var(--border); border-radius: 999px; background: var(--bg-card); color: var(--text-muted); cursor: pointer; padding: 0; overflow: hidden; }
.theme-toggle-track { position: absolute; inset: 0; display: flex; align-items: center; justify-content: space-between; padding: 0 6px; font-size: 12px; opacity: .72; }
.theme-toggle-thumb { position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; background: var(--text); color: var(--bg); transition: transform .4s cubic-bezier(.2,.8,.2,1); }
html[data-theme="light"] .theme-toggle-thumb { transform: translateX(20px); }

/* ===== HERO ===== */
.hero { min-height: 100vh; display: flex; align-items: center; justify-content: center; position: relative; padding: 8rem 2rem 4rem; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: radial-gradient(ellipse 80% 50% at 20% 40%, rgba(0,212,170,0.08) 0%, transparent 50%), radial-gradient(ellipse 60% 40% at 80% 60%, rgba(124,58,237,0.06) 0%, transparent 50%); pointer-events: none; }
.hero-grid-bg { 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 70% 60% at 50% 50%, black 30%, transparent 70%); pointer-events: none; }
.hero-content { max-width: 980px; text-align: center; position: relative; z-index: 1; width: 100%; }
.hero-badge { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.4rem 1rem; background: var(--accent-dim); border: 1px solid var(--accent); border-radius: 100px; font-size: 0.72rem; font-weight: 600; color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 1.5rem; animation: fadeInUp 0.6s ease 0.2s both; }
.hero-badge .dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; animation: pulse 2s ease infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.2)} }
.hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 900; line-height: 1.1; margin-bottom: 1rem; animation: fadeInUp 0.6s ease 0.3s both; }
.hero h1 .gradient { background: linear-gradient(135deg, var(--g1), var(--g2), var(--g3)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-role { font-size: clamp(1.05rem, 2.6vw, 1.5rem); font-weight: 700; color: var(--text); margin-bottom: .5rem; animation: fadeInUp 0.6s ease 0.35s both; }
.hero-role .gradient { background: linear-gradient(135deg, var(--g1), var(--g2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-keywords { font-size: clamp(.8rem, 1.8vw, .95rem); color: var(--accent); font-family: 'JetBrains Mono', monospace; margin-bottom: 1.5rem; animation: fadeInUp 0.6s ease 0.4s both; }
.hero-desc { font-size: 1rem; color: var(--text-dim); max-width: 720px; margin: 0 auto 2.5rem; line-height: 1.7; animation: fadeInUp 0.6s ease 0.5s both; }
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; animation: fadeInUp 0.6s ease 0.6s both; }
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.85rem 1.75rem; border-radius: 8px; font-size: 0.9rem; font-weight: 600; text-decoration: none; transition: all 0.3s ease; cursor: pointer; border: none; font-family: inherit; }
.btn-primary { background: linear-gradient(135deg, var(--g1), var(--g2)); color: var(--bg); box-shadow: 0 4px 20px rgba(0,212,170,0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,212,170,0.4); }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border-light); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }

.stats-bar { display: flex; justify-content: center; gap: 3rem; margin-top: 4rem; padding-top: 2rem; border-top: 1px solid var(--border); animation: fadeInUp 0.6s ease 0.7s both; flex-wrap: wrap; }
.stat-item { text-align: center; }
.stat-value { font-size: 2rem; font-weight: 800; color: var(--accent); font-family: 'JetBrains Mono', monospace; }
.stat-label { font-size: 0.75rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.1em; margin-top: 0.25rem; }

/* ===== SECTIONS ===== */
section { padding: 5.5rem 2rem; }
.section-inner { max-width: 1100px; margin: 0 auto; }
.section-header { margin-bottom: 3rem; display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.section-header h2 { font-size: 1.75rem; font-weight: 800; color: var(--text); }
.section-header .line { flex: 1; height: 1px; background: linear-gradient(90deg, var(--border), transparent); max-width: 300px; }
.section-header .num { font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; color: var(--accent); font-weight: 500; }

/* ===== ROLE TARGETS ===== */
#roles { background: var(--bg-elevated); }
.roles-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1rem; }
.role-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 1.1rem 1.25rem; transition: all .25s ease; }
.role-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.role-card h3 { font-size: .95rem; font-weight: 700; color: var(--text); margin-bottom: .5rem; display: flex; align-items: center; gap: .5rem; }
.role-card h3 .match { margin-left: auto; font-size: .62rem; font-weight: 700; color: var(--accent); background: var(--accent-glow); border: 1px solid var(--accent-dim); padding: .15rem .5rem; border-radius: 100px; white-space: nowrap; }
.role-kws { display: flex; flex-wrap: wrap; gap: .35rem; }
.role-kw { font-size: .68rem; font-family: 'JetBrains Mono', monospace; color: var(--text-muted); background: var(--bg); border: 1px solid var(--border); border-radius: 5px; padding: .18rem .5rem; }

/* ===== ABOUT ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1.35fr; gap: 3.5rem; align-items: start; }
.about-left { position: relative; }
.about-avatar { width: 220px; height: 220px; border-radius: 20px; background: linear-gradient(135deg, var(--g1), var(--g2), var(--g3)); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; animation: float 6s ease-in-out infinite; }
.about-avatar::before { content: ''; position: absolute; inset: 3px; background: var(--bg-card); border-radius: 17px; }
.about-avatar img { position: relative; z-index: 1; width: calc(100% - 6px); height: calc(100% - 6px); object-fit: cover; border-radius: 17px; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
.about-info { margin-top: 2rem; display: flex; flex-direction: column; gap: 0.75rem; }
.info-row { display: flex; align-items: center; gap: 0.75rem; font-size: 0.9rem; color: var(--text-muted); }
.info-row svg { width: 18px; height: 18px; color: var(--accent); flex-shrink: 0; }
.info-row a { color: var(--text-muted); text-decoration: none; word-break: break-all; }
.info-row a:hover { color: var(--accent); }
.about-right p { color: var(--text-muted); font-size: 1rem; line-height: 1.8; margin-bottom: 1.4rem; }
.about-right p strong { color: var(--text); font-weight: 600; }
.about-right .kw-line { font-family: 'JetBrains Mono', monospace; font-size: .78rem; color: var(--accent); background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: .8rem 1rem; line-height: 1.7; }

/* ===== EXPERIENCE CAROUSEL ===== */
.exp-carousel { position: relative; overflow: hidden; }
.exp-track { display: flex; width: calc(var(--slide-count, 6) * 100%); transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1); align-items: stretch; }
.exp-slide { width: calc(100% / var(--slide-count, 6)); flex: 0 0 calc(100% / var(--slide-count, 6)); padding: 4px; }
.exp-slide-inner { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 2rem; height: 100%; transition: all 0.4s ease; position: relative; overflow: hidden; }
.exp-slide-inner::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--g1), var(--g2), var(--g3)); transform: scaleX(0); transform-origin: left; transition: transform 0.4s ease; }
.exp-slide-inner:hover::before { transform: scaleX(1); }
.exp-slide-header { margin-bottom: 1.25rem; }
.exp-slide-role { font-size: 1.2rem; font-weight: 700; color: var(--text); line-height: 1.3; margin: 0 0 0.25rem 0; }
.company-link { margin-left: .5rem; font-size: .72rem; font-family: 'JetBrains Mono', monospace; color: var(--accent); text-decoration: none; border-bottom: 1px dashed currentColor; }
.exp-slide-company { font-size: 0.95rem; font-weight: 600; color: var(--accent); margin: 0 0 0.75rem 0; }
.exp-slide-meta { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; margin-bottom: 1rem; font-size: 0.8rem; color: var(--text-dim); font-family: 'JetBrains Mono', monospace; }
.exp-slide-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1rem; }
.exp-slide-tag { font-size: 0.68rem; font-weight: 600; padding: 0.25rem 0.6rem; border-radius: 100px; background: var(--accent-glow); border: 1px solid var(--accent-dim); color: var(--accent); text-transform: uppercase; letter-spacing: 0.05em; }
.exp-slide-tag.current { background: rgba(16,185,129,0.15); border-color: rgba(16,185,129,0.3); color: var(--success); }
.exp-slide-desc { font-size: 0.95rem; line-height: 1.7; color: var(--text-muted); margin: 0 0 1rem 0; }
.exp-slide-achievements { display: flex; flex-direction: column; gap: .9rem; }
.exp-slide-achievement { display: flex; gap: 0.75rem; align-items: flex-start; }
.exp-slide-ach-icon { flex-shrink: 0; margin-top: 2px; color: var(--accent); font-weight: 700; }
.exp-slide-ach-title { font-size: 0.92rem; font-weight: 600; color: var(--text); line-height: 1.4; margin: 0 0 0.15rem 0; }
.exp-slide-ach-detail { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; margin: 0; }
.exp-slide-ach-detail code, .exp-slide-desc code { font-family: 'JetBrains Mono', monospace; font-size: .8em; color: var(--accent-secondary); background: var(--accent-glow); padding: .1em .4em; border-radius: 4px; }
.exp-slide-ach-highlight { font-weight: 600; color: var(--text); }
.exp-slide-metrics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.exp-slide-metric { text-align: center; padding: 1.25rem 0.75rem; border-radius: 12px; border: 1px solid var(--border); background: var(--bg); transition: all 0.3s ease; }
.exp-slide-metric:hover { border-color: var(--border-light); transform: translateY(-2px); }
.exp-slide-metric-value { font-size: 1.75rem; font-weight: 800; color: var(--text); line-height: 1.1; margin: 0 0 0.35rem 0; font-family: 'JetBrains Mono', monospace; }
.exp-slide-metric-label { font-size: 0.65rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; margin: 0; }
.exp-slide-metric.accent .exp-slide-metric-value { color: var(--accent-secondary); }
.exp-slide-metric.positive .exp-slide-metric-value { color: var(--accent); }
.exp-slide-card-title { font-size: 1.05rem; font-weight: 700; color: var(--text); margin: 0 0 1.25rem 0; display: flex; align-items: center; gap: 0.5rem; }
.exp-slide-nav { display: flex; align-items: center; justify-content: center; gap: 1rem; margin-top: 1.5rem; }
.exp-slide-nav-btn { width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-card); cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--text-muted); transition: all 0.2s ease; }
.exp-slide-nav-btn:hover { border-color: var(--accent); color: var(--accent); }
.exp-slide-nav-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.exp-slide-nav-btn svg { width: 18px; height: 18px; }
.exp-slide-dots { display: flex; gap: 0.5rem; }
.exp-slide-dot { width: 8px; height: 8px; border-radius: 50%; border: none; padding: 0; cursor: pointer; background: var(--border); transition: all 0.3s ease; }
.exp-slide-dot.active { background: var(--accent); width: 24px; border-radius: 4px; }

/* ===== SKILLS ===== */
#skills { background: var(--bg-elevated); }
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.skill-category { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; transition: all 0.3s ease; }
.skill-category:hover { border-color: var(--border-light); transform: translateY(-2px); }
.skill-category.priority { border-color: var(--accent-dim); background: linear-gradient(135deg, var(--bg-card), rgba(0,212,170,0.04)); }
.skill-cat-title { font-size: 0.85rem; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 1rem; display: flex; align-items: center; gap: 0.5rem; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.skill-tag { padding: 0.4rem 0.9rem; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; font-size: 0.8rem; font-weight: 500; color: var(--text-muted); transition: all 0.2s; font-family: 'JetBrains Mono', monospace; }
.skill-tag:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.skill-tag.hot { border-color: var(--accent-dim); color: var(--accent); background: var(--accent-glow); }

/* ===== PROJECTS ===== */
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 1.5rem; }
.project-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 2rem; transition: all 0.4s ease; position: relative; overflow: hidden; display: flex; flex-direction: column; }
.project-card:hover { border-color: var(--border-light); transform: translateY(-4px); box-shadow: 0 15px 50px rgba(0,0,0,0.3); }
.project-icon { width: 52px; height: 52px; border-radius: 14px; background: linear-gradient(135deg, var(--accent-dim), rgba(0,168,232,0.2)); display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; font-size: 1.6rem; border: 1px solid var(--accent-dim); }
.project-title { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 0.5rem; }
.project-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 1rem; flex-grow: 1; }
.project-features { list-style: none; margin-bottom: 1rem; }
.project-features li { display: flex; gap: 0.5rem; align-items: flex-start; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.4rem; }
.project-features li::before { content: '→'; color: var(--accent); font-weight: 700; }
.project-metrics { display: flex; gap: 1.5rem; margin-top: auto; }
.project-metric { font-size: 0.75rem; color: var(--text-dim); }
.project-metric strong { display: block; font-size: 1rem; color: var(--accent); font-family: 'JetBrains Mono', monospace; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
.project-tag { padding: 0.25rem 0.7rem; background: var(--bg); border-radius: 4px; font-size: 0.7rem; color: var(--text-dim); font-family: 'JetBrains Mono', monospace; border: 1px solid var(--border); }
.project-card.featured { border-color: var(--accent-dim); }
.featured-badge { position: absolute; top: 1rem; right: 1rem; padding: 0.25rem 0.6rem; background: linear-gradient(135deg, var(--g1), var(--g2)); color: var(--bg); font-size: 0.65rem; font-weight: 700; text-transform: uppercase; border-radius: 100px; }

/* ===== ETL DEMO (shared with extras) ===== */
#demo { background: var(--bg-elevated); }
.showcase-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; }
.showcase-card-header h3 { font-size: 1.15rem; font-weight: 700; color: var(--text); margin-bottom: 0.35rem; }
.showcase-card-header p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 1rem; }
.demo-toolbar { display: flex; align-items: center; gap: 0.55rem; flex-wrap: wrap; margin-bottom: 0.9rem; }
.demo-btn { padding: 0.45rem 0.8rem; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text-muted); font: 600 0.75rem/1 inherit; cursor: pointer; transition: all .2s ease; }
.demo-btn:hover, .demo-btn.active { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.demo-readout { margin-left: auto; font: 600 0.72rem/1 'JetBrains Mono', monospace; color: var(--text-dim); }
.etl-cohort { display: grid; grid-template-columns: repeat(4, 1fr); gap: .65rem; margin: .9rem 0 1rem; }
.etl-cohort-card { border: 1px solid var(--border); border-radius: 12px; padding: .75rem .8rem; background: linear-gradient(135deg, rgba(255,255,255,.025), rgba(0,212,170,.025)); }
.etl-cohort-card span { display: block; font-size: .62rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .05em; }
.etl-cohort-card strong { display: block; margin-top: .25rem; font: 700 1.15rem/1.1 'JetBrains Mono', monospace; color: var(--accent); }
.etl-cohort-card small { display: block; margin-top: .25rem; color: var(--text-muted); font-size: .62rem; }
.etl-report-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin-top: .9rem; }
.etl-report-card { border: 1px solid var(--border); border-radius: 12px; padding: 1rem; background: var(--bg); }
.etl-report-label { display: block; font: 700 .58rem/1 'JetBrains Mono', monospace; letter-spacing: .1em; color: var(--text-dim); margin-bottom: .8rem; }
.etl-report-user { display: flex; align-items: center; gap: .7rem; padding-bottom: .7rem; border-bottom: 1px solid var(--border); }
.etl-avatar { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: var(--accent-glow); border: 1px solid var(--accent); color: var(--accent); font: 700 .68rem 'JetBrains Mono', monospace; }
.etl-report-user strong, .etl-badge strong { display: block; color: var(--text); font-size: .75rem; }
.etl-report-user small, .etl-badge small { display: block; margin-top: .18rem; color: var(--text-dim); font-size: .61rem; }
.etl-metric-row { display: grid; grid-template-columns: 1fr auto auto; gap: .7rem; align-items: center; padding: .55rem 0; border-bottom: 1px solid rgba(255,255,255,.04); font-size: .68rem; }
.etl-metric-row:last-child { border-bottom: 0; }
.etl-metric-row strong { font: 700 .75rem 'JetBrains Mono', monospace; color: var(--text); }
.etl-metric-row i { font-style: normal; font-size: .58rem; color: var(--accent); }
.etl-badge { display: flex; gap: .65rem; align-items: flex-start; padding: .55rem 0; border-bottom: 1px solid rgba(255,255,255,.04); }
.etl-badge:last-child { border-bottom: 0; }
.etl-badge > span { font-size: 1.15rem; }
.etl-flow { position: relative; display: flex; gap: .55rem; align-items: stretch; overflow-x: auto; padding: .25rem .1rem .8rem; }
.etl-node { min-width: 92px; border: 1px solid var(--border); border-radius: 12px; background: var(--bg); padding: .85rem .6rem; text-align: center; transition: all .3s ease; }
.etl-node.active { border-color: var(--accent); box-shadow: 0 0 24px var(--accent-glow); transform: translateY(-3px); }
.etl-node.done { border-color: rgba(0,212,170,.35); }
.etl-node-icon { font-size: 1.15rem; }
.etl-node-name { margin-top: .35rem; font-size: .7rem; font-weight: 700; color: var(--text); }
.etl-node-sub { margin-top: .2rem; font-size: .58rem; color: var(--text-dim); line-height: 1.35; }
.etl-arrow { flex: 0 0 18px; display: flex; align-items: center; justify-content: center; color: var(--accent); font: 700 1rem/1 'JetBrains Mono', monospace; }
.etl-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: .65rem; margin-top: .9rem; }
.etl-stat { padding: .75rem; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); }
.etl-stat strong { display: block; font: 700 .95rem/1 'JetBrains Mono', monospace; color: var(--accent); }
.etl-stat span { display: block; margin-top: .3rem; font-size: .62rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .05em; }
.etl-note { margin-top: .8rem; padding: .7rem .85rem; border-left: 2px solid var(--accent); background: var(--accent-glow); color: var(--text-muted); font-size: .75rem; line-height: 1.55; }
.etl-note strong { color: var(--text); }

/* ===== CERTIFICATIONS ===== */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.cert-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; display: flex; gap: 1rem; align-items: flex-start; transition: all 0.3s ease; }
.cert-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.cert-icon { width: 48px; height: 48px; border-radius: 12px; background: linear-gradient(135deg, var(--g1), var(--g2)); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; }
.cert-info h3 { font-size: 0.95rem; font-weight: 700; color: var(--text); margin-bottom: 0.25rem; }
.cert-info p { font-size: 0.8rem; color: var(--text-dim); }

/* ===== EDUCATION ===== */
.edu-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; display: flex; gap: 1rem; align-items: flex-start; max-width: 600px; }
.edu-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--accent-dim); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; }
.edu-info h3 { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 0.25rem; }
.edu-info p { font-size: 0.85rem; color: var(--text-muted); }

/* ===== CONTACT ===== */
#contact { text-align: center; }
.contact-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; padding: 3rem 2rem; max-width: 700px; margin: 0 auto; position: relative; overflow: hidden; }
.contact-box::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, var(--accent-glow) 0%, transparent 50%); pointer-events: none; }
.contact-box h2 { font-size: 1.75rem; font-weight: 800; margin-bottom: 0.5rem; position: relative; }
.contact-box p { color: var(--text-muted); margin-bottom: 2rem; position: relative; }
.contact-links { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; position: relative; }
.contact-link { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.75rem 1.5rem; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; color: var(--text); text-decoration: none; font-size: 0.85rem; font-weight: 500; transition: all 0.2s; }
.contact-link:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }

/* ===== FOOTER ===== */
footer { padding: 2rem; text-align: center; border-top: 1px solid var(--border); color: var(--text-dim); font-size: 0.8rem; }
footer a { color: var(--text-muted); text-decoration: none; }
footer a:hover { color: var(--accent); }
.footer-social { display: flex; justify-content: center; gap: 1.5rem; margin-bottom: 1rem; flex-wrap: wrap; }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.js .reveal { opacity: 0; transform: translateY(30px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.visible, .js.show-all .reveal { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; } }

/* ===== SCROLL TO TOP ===== */
.scroll-top { position: fixed; bottom: 1.5rem; right: 1.25rem; z-index: 500; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--border); background: var(--bg-card); color: var(--text-muted); font-size: 1.2rem; cursor: pointer; display: none; align-items: center; justify-content: center; transition: all 0.3s ease; box-shadow: 0 4px 16px rgba(0,0,0,0.2); }
.scroll-top.show { display: flex; }
.scroll-top:hover { border-color: var(--accent); color: var(--accent); }

/* ===== RESPONSIVE ===== */
@media (max-width: 760px) {
    .etl-cohort, .etl-stats { grid-template-columns: repeat(2, 1fr); }
    .etl-report-grid { grid-template-columns: 1fr; }
    .demo-readout { margin-left: 0; width: 100%; }
    .project-grid, .skills-grid, .cert-grid, .roles-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; gap: 2rem; }
    .about-avatar { width: 160px; height: 160px; }
    .stats-bar { gap: 1.5rem; }
    .stat-value { font-size: 1.5rem; }
    section { padding: 4rem 1rem; }
    .hero { padding: 6.5rem 1rem 3rem; min-height: 100svh; }
    .contact-box { padding: 2rem 1.15rem; }
    .contact-links { flex-direction: column; }
    .contact-link { justify-content: center; width: 100%; }
    .about-left { display: flex; flex-direction: column; align-items: center; }
    .about-info { width: 100%; max-width: 360px; }
    .exp-slide-inner { padding: 1.25rem; }
    .exp-slide-metrics-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 420px) {
    nav { padding-inline: .75rem; }
    .theme-toggle { width: 44px; height: 26px; }
    .theme-toggle-thumb { width: 18px; height: 18px; }
    html[data-theme="light"] .theme-toggle-thumb { transform: translateX(18px); }
    .hero h1 { font-size: clamp(2.2rem, 12vw, 3rem); }
    .exp-slide-inner { padding: 1rem; }
    .etl-cohort, .etl-stats { grid-template-columns: 1fr 1fr; }
    .etl-flow { flex-wrap: wrap; overflow-x: visible; gap: .5rem; }
    .etl-arrow { display: none; }
    .etl-node { min-width: 0; flex: 1 1 calc(50% - .25rem); }
}
/* ===== RECOGNITION ===== */
.recog-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; max-width: 700px; display: flex; gap: 1rem; align-items: flex-start; }
.recog-icon { width: 48px; height: 48px; border-radius: 12px; background: linear-gradient(135deg, #f59e0b, #ef4444); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; }
.recog-info h3 { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: .25rem; }
.recog-info p { font-size: .85rem; color: var(--text-muted); line-height: 1.6; }