/* ==========================================================================
   Robinson Salgado — Executive Portfolio
   Stack: HTML5 · CSS3 · TailwindCSS (CDN) · Vanilla JS · GSAP · AOS · Typed.js
   ========================================================================== */

/* ---------- Theme tokens ---------- */
:root {
  --color-bg: #0B1020;
  --color-surface: #131A2B;
  --color-primary: #3B82F6;
  --color-secondary: #8B5CF6;
  --color-accent: #22C55E;
  --color-text: #F8FAFC;
  --color-muted: #94A3B8;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-card: rgba(255, 255, 255, 0.04);
  --color-card-hover: rgba(255, 255, 255, 0.07);
  --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, .5);
  --shadow-glow: 0 0 0 1px rgba(59,130,246,.25), 0 20px 60px -20px rgba(59,130,246,.45);
  --gradient-primary: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  --gradient-accent: linear-gradient(135deg, #8B5CF6 0%, #22C55E 100%);
  --radius: 16px;
  --nav-h: 72px;
  --container: 1200px;
  --transition: 200ms cubic-bezier(.2,.8,.2,1);
}

[data-theme="light"] {
  --color-bg: #FFFFFF;
  --color-surface: #F8FAFC;
  --color-primary: #2563EB;
  --color-secondary: #7C3AED;
  --color-accent: #16A34A;
  --color-text: #111827;
  --color-muted: #475569;
  --color-border: rgba(15, 23, 42, 0.08);
  --color-card: #FFFFFF;
  --color-card-hover: #F1F5F9;
  --shadow-soft: 0 10px 30px -12px rgba(15, 23, 42, .12);
  --shadow-glow: 0 0 0 1px rgba(37,99,235,.25), 0 20px 60px -20px rgba(37,99,235,.35);
  --gradient-primary: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  --gradient-accent: linear-gradient(135deg, #7C3AED 0%, #16A34A 100%);
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: 6px; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}

.muted { color: var(--color-muted); }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; left: 8px; top: -40px;
  background: var(--color-primary); color: #fff;
  padding: 8px 12px; border-radius: 8px; z-index: 200;
  transition: top var(--transition);
}
.skip-link:focus { top: 8px; }

/* ---------- Loader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 1000;
  background: var(--color-bg);
  display: grid; place-items: center;
  transition: opacity .6s ease, visibility .6s ease;
}
.loader.hide { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-inner { text-align: center; max-width: 360px; padding: 24px; }
.loader-logo {
  display: inline-flex; align-items: center; justify-content: center;
  width: 96px; height: 96px; border-radius: 24px;
  background: var(--gradient-primary);
  font-weight: 800; font-size: 36px; letter-spacing: 2px;
  box-shadow: var(--shadow-glow);
  animation: pulse 2s ease-in-out infinite;
}
.loader-logo span { color: #fff; }
.loader-bar {
  margin: 24px auto 16px;
  width: 240px; height: 4px;
  background: var(--color-border);
  border-radius: 999px; overflow: hidden;
}
.loader-bar-fill {
  width: 0%; height: 100%;
  background: var(--gradient-primary);
  animation: load 1.6s ease forwards;
}
.loader-icons {
  display: flex; gap: 14px; justify-content: center; margin-bottom: 8px;
  color: var(--color-muted); font-size: 18px;
}
.loader-icons i { animation: float 2s ease-in-out infinite; }
.loader-icons i:nth-child(2) { animation-delay: .15s; }
.loader-icons i:nth-child(3) { animation-delay: .30s; }
.loader-icons i:nth-child(4) { animation-delay: .45s; }
.loader-icons i:nth-child(5) { animation-delay: .60s; }
.loader-icons i:nth-child(6) { animation-delay: .75s; }
.loader-icons i:nth-child(7) { animation-delay: .90s; }
.loader-text { color: var(--color-muted); font-size: 14px; }

@keyframes load { to { width: 100%; } }
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ---------- Scroll Progress ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0;
  height: 3px; width: 0%;
  background: var(--gradient-primary);
  z-index: 90; transition: width 80ms linear;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 80;
  height: var(--nav-h);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in oklab, var(--color-bg) 70%, transparent);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}
.nav.scrolled { border-bottom-color: var(--color-border); }
.nav-inner {
  height: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: clamp(16px, 4vw, 32px);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.nav-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; }
.logo-mark {
  display: inline-grid; place-items: center;
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--gradient-primary); color: #fff;
  font-weight: 800; letter-spacing: 1px; font-size: 14px;
  box-shadow: var(--shadow-glow);
}
.logo-text { font-size: 15px; }
.nav-links { display: none; gap: 6px; }
@media (min-width: 1024px) { .nav-links { display: inline-flex; } }
.nav-links a {
  padding: 8px 12px; border-radius: 10px; font-size: 14px; color: var(--color-muted);
  transition: color var(--transition), background-color var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--color-text); background: var(--color-card); }

.nav-actions { display: inline-flex; align-items: center; gap: 8px; }
.lang-switch {
  display: inline-flex; padding: 4px; gap: 2px;
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: 999px;
}
.lang-btn {
  padding: 4px 10px; font-size: 12px; font-weight: 600; color: var(--color-muted);
  border-radius: 999px; transition: all var(--transition);
}
.lang-btn.active { background: var(--gradient-primary); color: #fff; }

.theme-toggle {
  width: 40px; height: 40px; border-radius: 10px;
  display: inline-grid; place-items: center;
  background: var(--color-card); border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: background var(--transition), transform var(--transition);
}
.theme-toggle:hover { transform: rotate(15deg); background: var(--color-card-hover); }
[data-theme="dark"] .theme-toggle .icon-light { display: none; }
[data-theme="light"] .theme-toggle .icon-dark { display: none; }

.menu-toggle {
  display: inline-grid; gap: 5px; padding: 10px;
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: 10px;
}
.menu-toggle span { display: block; width: 20px; height: 2px; background: var(--color-text); transition: transform var(--transition), opacity var(--transition); }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (min-width: 1024px) { .menu-toggle { display: none; } }

.mobile-menu {
  position: fixed; top: var(--nav-h); left: 0; right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 16px; display: none; flex-direction: column; gap: 6px;
  z-index: 70;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { padding: 10px 12px; border-radius: 10px; color: var(--color-text); }
.mobile-menu a:hover { background: var(--color-card); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100svh; padding-top: calc(var(--nav-h) + 32px); padding-bottom: 64px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 70%);
  opacity: .35;
}
.blob {
  position: absolute; width: 520px; height: 520px; border-radius: 50%;
  filter: blur(80px); opacity: .5;
}
.blob-1 { background: var(--color-primary); top: -120px; left: -100px; }
.blob-2 { background: var(--color-secondary); top: 30%; right: -120px; }
.blob-3 { background: var(--color-accent); bottom: -150px; left: 30%; opacity: .25; }
#particles { position: absolute; inset: 0; width: 100%; height: 100%; }

.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center;
}
@media (min-width: 1024px) { .hero-grid { grid-template-columns: 1.1fr .9fr; gap: 64px; } }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--color-card); border: 1px solid var(--color-border);
  font-size: 12.5px; color: var(--color-muted);
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 0 4px color-mix(in oklab, var(--color-accent) 30%, transparent); animation: pulse 2s infinite; }

.hero-avatar { position: relative; width: 120px; height: 120px; margin: 24px 0 16px; }
.hero-avatar img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; border: 2px solid var(--color-border); }
.avatar-ring {
  position: absolute; inset: -6px; border-radius: 50%;
  background: conic-gradient(from 0deg, var(--color-primary), var(--color-secondary), var(--color-accent), var(--color-primary));
  z-index: -1; filter: blur(2px);
  animation: spin 8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.hero-title { margin: 0; font-size: clamp(36px, 6vw, 64px); line-height: 1.05; font-weight: 800; letter-spacing: -.02em; }
.hero-name { background: var(--gradient-primary); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-roles { margin: 12px 0 4px; color: var(--color-muted); font-size: clamp(14px, 1.4vw, 16px); }
.hero-typed { margin: 8px 0 16px; font-size: clamp(20px, 2.8vw, 28px); font-weight: 600; min-height: 1.4em; }
.typed-text { color: var(--color-primary); }
.hero-desc { color: var(--color-muted); max-width: 60ch; margin-bottom: 28px; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; position: relative; z-index: 4; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 18px; border-radius: 12px; font-weight: 600; font-size: 14px;
  border: 1px solid var(--color-border); background: var(--color-card);
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--gradient-primary); border-color: transparent; color: #fff; box-shadow: var(--shadow-glow); }
.btn-primary:hover { box-shadow: 0 0 0 2px color-mix(in oklab, var(--color-primary) 50%, transparent), 0 24px 60px -20px color-mix(in oklab, var(--color-primary) 70%, transparent); }
.btn-ghost:hover { background: var(--color-card-hover); }
.btn-icon { padding: 12px; width: 44px; height: 44px; justify-content: center; }
.btn-block { width: 100%; justify-content: center; }

/* CV dropdown */
.cv-dropdown { position: relative; display: inline-block; }
.cv-dropdown .cv-trigger { gap: 10px; }
.cv-dropdown .cv-caret { font-size: 11px; transition: transform .2s ease; opacity: .85; }
.cv-dropdown.open .cv-caret { transform: rotate(180deg); }
.cv-menu {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 220px;
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: 14px; padding: 6px;
  box-shadow: 0 24px 60px -20px rgba(0,0,0,.45), 0 8px 24px -12px rgba(0,0,0,.3);
  backdrop-filter: blur(14px);
  z-index: 50;
  display: flex; flex-direction: column; gap: 2px;
  animation: cv-pop .15s ease-out;
}
.cv-menu[hidden] { display: none; }
.cv-menu a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 10px;
  color: var(--color-text); font-size: 14px; font-weight: 500;
  text-decoration: none; transition: background .15s ease, color .15s ease;
}
.cv-menu a:hover, .cv-menu a:focus-visible {
  background: color-mix(in oklab, var(--color-primary) 14%, transparent);
  color: var(--color-primary);
  outline: none;
}
.cv-menu a i { width: 18px; text-align: center; opacity: .9; }
@keyframes cv-pop {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Orbit */
.hero-right { position: relative; aspect-ratio: 1 / 1; max-width: 720px; margin-inline: auto; }
.orbit {
  position: absolute; inset: 0; display: grid; place-items: center;
}
.orbit-core {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 360px; height: 360px; border-radius: 50%;
  background: var(--gradient-primary); color: #fff;
  display: grid; place-items: center; gap: 4px; text-align: center;
  box-shadow: var(--shadow-glow); font-weight: 700; font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
  overflow: hidden;
  border: 3px solid color-mix(in oklab, var(--color-primary) 35%, #ffffff 65%);
}
.orbit-core img {
  width: 100%; height: 100%; object-fit: cover;
}
.orbit-core span {
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  opacity: .9;
  letter-spacing: .12em;
}
.orbit-ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1px dashed var(--color-border);
  animation: spin var(--dur, 22s) linear infinite;
}
.ring-1 { inset: 8%; --dur: 26s; --radius: 230px; --step: 90deg; }
.ring-2 { inset: -5%; --dur: 36s; animation-direction: reverse; --radius: 280px; --step: 90deg; }
.ring-3 { inset: -18%; --dur: 48s; --radius: 330px; --step: 120deg; }
.tech-card {
  position: absolute; top: 50%; left: 50%;
  transform:
    translate(-50%, -50%)
    rotate(calc(var(--i) * var(--step, 90deg)))
    translateX(var(--radius, 120px))
    rotate(calc(var(--i) * var(--step, 90deg) * -1));
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 12px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: var(--color-surface); color: var(--color-text);
  border: 1px solid var(--color-border); box-shadow: var(--shadow-soft);
}
.tech-card i { color: var(--color-primary); }
@media (max-width: 768px) { .hero-right { display: none; } }

.scroll-down {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  width: 28px; height: 44px; border: 2px solid var(--color-muted); border-radius: 14px;
  display: grid; place-items: start center; padding-top: 8px;
}
.scroll-down span { width: 4px; height: 8px; border-radius: 4px; background: var(--color-muted); animation: scrolldown 1.6s ease infinite; }
@keyframes scrolldown { 0% { transform: translateY(0); opacity: 1; } 100% { transform: translateY(14px); opacity: 0; } }

/* ---------- Sections ---------- */
.section { padding: clamp(64px, 9vw, 120px) 0; position: relative; }
.section-alt { background: linear-gradient(180deg, transparent, color-mix(in oklab, var(--color-surface) 60%, transparent), transparent); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.kicker {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .18em;
  color: var(--color-primary); text-transform: uppercase; margin-bottom: 12px;
  padding: 4px 10px; border-radius: 999px;
  background: color-mix(in oklab, var(--color-primary) 12%, transparent);
}
.section-title { font-size: clamp(28px, 4vw, 44px); font-weight: 800; letter-spacing: -.02em; margin: 0 0 12px; }
.section-sub { color: var(--color-muted); font-size: 16px; }

/* Cards */
.card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 24px;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-4px); border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border)); background: var(--color-card-hover); box-shadow: var(--shadow-soft); }
.card-icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center; font-size: 18px;
  background: var(--gradient-primary); color: #fff; margin-bottom: 16px;
  box-shadow: var(--shadow-glow);
}
.card h3 { margin: 0 0 8px; font-size: 18px; font-weight: 700; }
.card p { color: var(--color-muted); margin: 0; font-size: 14.5px; }

.about-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .about-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1200px) { .about-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

/* KPIs */
.kpi-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.kpi { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 24px; text-align: center; transition: all var(--transition); }
.kpi:hover { border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border)); transform: translateY(-3px); }
.kpi-num {
  font-family: 'JetBrains Mono', monospace; font-size: clamp(36px, 5vw, 56px); font-weight: 800; line-height: 1;
  background: var(--gradient-primary); -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: -.02em;
}
.kpi-label { color: var(--color-muted); font-size: 13.5px; margin-top: 8px; }
.industry-row { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 32px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 999px; font-weight: 600; font-size: 13px;
  background: var(--color-card); border: 1px solid var(--color-border);
}
.chip i { color: var(--color-primary); }

/* Timeline */
.timeline { list-style: none; padding: 0; margin: 0; position: relative; }
.timeline::before {
  content: ''; position: absolute; left: 16px; top: 0; bottom: 0;
  width: 2px; background: linear-gradient(180deg, var(--color-primary), var(--color-secondary), transparent);
}
@media (min-width: 768px) { .timeline::before { left: 50%; transform: translateX(-50%); } }
.tl-item { position: relative; padding: 16px 0 16px 48px; }
@media (min-width: 768px) {
  .tl-item { width: 50%; padding: 16px 32px; }
  .tl-item:nth-child(odd) { margin-left: auto; }
  .tl-item:nth-child(even) { text-align: right; }
}
.tl-dot {
  position: absolute; left: 8px; top: 28px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--color-bg); border: 3px solid var(--color-primary); box-shadow: var(--shadow-glow);
}
@media (min-width: 768px) {
  .tl-item .tl-dot { left: auto; right: -9px; }
  .tl-item:nth-child(odd) .tl-dot { left: -9px; right: auto; }
}
.tl-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 20px;
  transition: all var(--transition);
  text-align: left;
}
.tl-item:nth-child(even) .tl-card { text-align: left; }
.tl-card:hover { border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border)); transform: translateY(-2px); }
.tl-role { font-weight: 700; font-size: 16px; margin: 0 0 4px; }
.tl-company { color: var(--color-primary); font-weight: 600; font-size: 14px; }
.tl-period { color: var(--color-muted); font-size: 13px; margin: 4px 0 12px; }
.tl-toggle {
  margin-top: 12px; display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px; border-radius: 8px; background: var(--color-card-hover);
  font-size: 12.5px; font-weight: 600; color: var(--color-primary);
}
.tl-details { display: none; margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--color-border); }
.tl-item.open .tl-details { display: block; }
.tl-item.open .tl-toggle i { transform: rotate(180deg); }
.tl-toggle i { transition: transform var(--transition); }
.tl-list { padding-left: 18px; margin: 8px 0; color: var(--color-muted); font-size: 14px; }
.tl-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.tl-tag { font-size: 11.5px; padding: 4px 10px; border-radius: 999px; background: color-mix(in oklab, var(--color-primary) 15%, transparent); color: var(--color-primary); font-weight: 600; }

/* Skills */
.skills-filters, .portfolio-filters { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 32px; }
.filter-btn {
  padding: 8px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
  border: 1px solid var(--color-border); background: var(--color-card); color: var(--color-muted);
  transition: all var(--transition);
}
.filter-btn:hover { color: var(--color-text); }
.filter-btn.active { background: var(--gradient-primary); color: #fff; border-color: transparent; }

.skills-grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.skill-cat { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 24px; }
.skill-cat h3 { margin: 0 0 16px; font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 10px; }
.skill-cat h3 i { color: var(--color-primary); }
.skill { margin-bottom: 14px; }
.skill-row { display: flex; justify-content: space-between; font-size: 13.5px; margin-bottom: 6px; }
.skill-row b { color: var(--color-text); font-weight: 600; }
.skill-row span { color: var(--color-muted); font-family: 'JetBrains Mono', monospace; font-size: 12px; }
.skill-bar { height: 8px; border-radius: 999px; background: var(--color-border); overflow: hidden; }
.skill-fill {
  height: 100%; width: 0; border-radius: 999px;
  background: var(--gradient-primary);
  transition: width 1.2s cubic-bezier(.2,.8,.2,1);
}

/* Stack badges */
.stack-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
.stack-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 14px; border-radius: 12px;
  background: var(--color-card); border: 1px solid var(--color-border);
  font-size: 13.5px; font-weight: 600;
  transition: all var(--transition);
}
.stack-badge i { color: var(--color-primary); width: 20px; text-align: center; font-size: 16px; }
.stack-badge:hover {
  transform: translateY(-3px);
  border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border));
  box-shadow: var(--shadow-glow);
}

/* Portfolio */
.portfolio-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.proj-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius); overflow: hidden; cursor: pointer;
  transition: all var(--transition);
  display: flex; flex-direction: column;
}
.proj-card:hover { transform: translateY(-4px); border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border)); box-shadow: var(--shadow-soft); }
.proj-img { aspect-ratio: 16/10; background: var(--color-surface); overflow: hidden; }
.proj-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.proj-card:hover .proj-img img { transform: scale(1.05); }
.proj-body { padding: 18px; flex: 1; }
.proj-title { font-size: 16px; font-weight: 700; margin: 0 0 6px; }
.proj-desc { color: var(--color-muted); font-size: 14px; margin: 0 0 12px; }
.proj-meta { display: flex; flex-wrap: wrap; gap: 6px; }
.proj-tag { font-size: 11px; padding: 3px 8px; border-radius: 999px; background: color-mix(in oklab, var(--color-primary) 12%, transparent); color: var(--color-primary); font-weight: 600; }

/* Education */
.edu-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.edu-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 24px; transition: all var(--transition); position: relative; overflow: hidden; }
.edu-card:hover { transform: translateY(-3px); border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border)); }
.edu-card-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.edu-card-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .15; filter: blur(8px); transform: scale(1.1); }
.edu-card > *:not(.edu-card-bg) { position: relative; z-index: 1; }
.edu-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--gradient-primary); color: #fff; display: grid; place-items: center; margin-bottom: 14px; }
.edu-card h3 { margin: 0 0 8px; font-size: 17px; }
.edu-school { color: var(--color-primary); font-weight: 600; margin: 0 0 4px; font-size: 14px; }
.edu-place { color: var(--color-muted); font-size: 13px; margin: 0; }

/* Certifications */
.cert-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.cert-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px; transition: all var(--transition); }
.cert-card:hover { transform: translateY(-3px); border-color: color-mix(in oklab, var(--color-secondary) 40%, var(--color-border)); }
.cert-card i { font-size: 22px; color: var(--color-secondary); margin-bottom: 12px; }
.cert-card h4 { margin: 0 0 4px; font-size: 15px; font-weight: 700; }
.cert-card p { color: var(--color-muted); font-size: 13px; margin: 0; }

/* Why */
.why-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.why-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px; transition: all var(--transition); position: relative; overflow: hidden; }
.why-card:hover { transform: translateY(-3px); border-color: color-mix(in oklab, var(--color-accent) 40%, var(--color-border)); }
.why-card::before {
  content: ''; position: absolute; inset: 0;
  background: var(--gradient-accent); opacity: 0;
  transition: opacity var(--transition); z-index: 0;
}
.why-card:hover::before { opacity: .04; }
.why-card > * { position: relative; z-index: 1; }
.why-icon { width: 40px; height: 40px; border-radius: 10px; background: color-mix(in oklab, var(--color-accent) 15%, transparent); color: var(--color-accent); display: grid; place-items: center; margin-bottom: 12px; }
.why-card h4 { margin: 0 0 6px; font-size: 15px; font-weight: 700; }
.why-card p { color: var(--color-muted); font-size: 13.5px; margin: 0; }

/* Contact */
.contact-grid { display: grid; gap: 40px; grid-template-columns: 1fr; align-items: start; }
@media (min-width: 900px) { .contact-grid { grid-template-columns: 1fr 1fr; gap: 64px; } }
.contact-list { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 12px; }
.contact-list li { display: inline-flex; align-items: center; gap: 12px; color: var(--color-muted); }
.contact-list i { color: var(--color-primary); width: 20px; }
.contact-list a { color: var(--color-text); }
.contact-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.contact-form { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 28px; display: grid; gap: 16px; }
.form-row { display: grid; gap: 6px; }
.form-row label { font-size: 13px; font-weight: 600; color: var(--color-muted); }
.form-row input, .form-row textarea {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  background: var(--color-bg); border: 1px solid var(--color-border);
  color: var(--color-text); font: inherit; font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-row input:focus, .form-row textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 20%, transparent); }
.form-row .error { color: #ef4444; font-size: 12.5px; min-height: 1em; }
.form-status { font-size: 13.5px; color: var(--color-accent); margin: 0; }
.form-status.error { color: #ef4444; }

/* Footer */
.footer { padding: 64px 0 24px; border-top: 1px solid var(--color-border); background: color-mix(in oklab, var(--color-surface) 50%, var(--color-bg)); }
.footer-grid { display: grid; gap: 32px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.footer h4 { font-size: 13px; text-transform: uppercase; letter-spacing: .12em; color: var(--color-muted); margin: 0 0 12px; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.footer ul a { color: var(--color-muted); font-size: 14px; transition: color var(--transition); }
.footer ul a:hover { color: var(--color-text); }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--color-card); border: 1px solid var(--color-border);
  display: grid; place-items: center; transition: all var(--transition);
}
.footer-social a:hover { background: var(--gradient-primary); color: #fff; border-color: transparent; }
.footer-prefs { display: flex; flex-wrap: wrap; gap: 10px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding-top: 32px; margin-top: 32px; border-top: 1px solid var(--color-border); color: var(--color-muted); font-size: 13px; }

.back-to-top {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--gradient-primary); color: #fff;
  display: grid; place-items: center;
  transition: transform var(--transition);
  box-shadow: var(--shadow-glow);
}
.back-to-top:hover { transform: translateY(-3px); }

/* Modal */
.modal { position: fixed; inset: 0; z-index: 100; display: none; }
.modal.open { display: grid; place-items: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.7); backdrop-filter: blur(6px); }
.modal-card {
  position: relative; z-index: 1;
  width: min(720px, 92vw); max-height: 88vh; overflow: auto;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow-soft);
}
.modal-close {
  position: absolute; top: 12px; right: 12px;
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--color-card); border: 1px solid var(--color-border);
  display: grid; place-items: center;
}
.modal-close:hover { background: var(--color-card-hover); }
.modal h3 { margin: 0 0 8px; font-size: 22px; }
.modal img { width: 100%; border-radius: 12px; margin: 12px 0; }

/* Utility */
.is-hidden { display: none !important; }