/* ============================================================
   Design System (v2)
   Rebuilt on a light "learning-platform" system: warm white
   surfaces, soft mint section bands, forest-green primary,
   gold secondary, big rounded white cards. The dark terminal
   card is kept as a single deliberate contrast accent — the
   one place the site still "goes technical" — everywhere else
   follows the new light system.
   ============================================================ */

:root {
  /* ---- Color tokens: "Precision Instrument" — gunmetal + brass ----
     A deliberate departure from the generic near-black + acid-accent
     look. Brass carries warmth and craft; steel is the cool, quiet
     counterweight used sparingly so brass stays the one accent that
     pops (never two competing accents at once). Light mode is warm
     parchment, not stark white — closer to technical drawing paper
     than a blank document. */
  --bg: #F3EFE7;
  --bg-elevated: #FBF9F5;
  --bg-soft: #ECE4D2;           /* warm tan band — hero / CTA sections */
  --surface: #FBF9F5;
  --surface-hover: #F5EFE3;
  --border: #DED5C2;
  --border-strong: #C9BCA0;

  --text-primary: #1B1A17;
  --text-secondary: #5B564C;
  --text-tertiary: #8C8577;

  --accent: #8B5A2B;            /* bronze — primary, light-mode contrast tuned */
  --accent-dim: #6E4620;
  --accent-amber: #64707C;      /* steel — secondary / decorative counterweight */
  --accent-rose: #A8432E;       /* rust — errors; corrosion-on-metal is the metaphor */
  --accent-violet: #64707C;     /* alias kept for gradient pairs; mirrors steel */

  --accent-rgb: 139, 90, 43;
  --amber-rgb: 100, 112, 124;

  --font-display: 'Big Shoulders', 'Archivo', sans-serif;
  --font-heading: 'Archivo', 'Inter', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --radius-sm: 3px;
  --radius-md: 5px;
  --radius-lg: 8px;
  --radius-full: 4px;           /* deliberately NOT a pill anymore — see note above */

  --shadow-sm: 0 1px 2px rgba(27,26,23,0.06);
  --shadow-md: 0 12px 28px rgba(27,26,23,0.09);
  --shadow-lg: 0 28px 64px rgba(27,26,23,0.16);
  --shadow-glow: 0 0 0 1px rgba(var(--accent-rgb), 0.16), 0 10px 30px rgba(var(--accent-rgb), 0.14);

  --container: 1180px;
  --nav-h: 72px;
  --status-h: 36px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.no-scroll { overflow: hidden; }

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

ul, ol { list-style: none; }

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

input, textarea, select { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: rgba(var(--accent-rgb), 0.22); color: var(--text-primary); }

/* ============================================================
   DECORATIVE MOTIFS
   Soft mint section bands + scattered dot clusters, in place of
   the old dark grid/glow texture. Used sparingly (hero, CTA).
   ============================================================ */
.band-soft { background: var(--bg-soft); }

.dot-cluster {
  position: absolute;
  width: 74px; height: 74px;
  background-image: radial-gradient(circle, rgba(var(--amber-rgb), 0.55) 1.6px, transparent 1.6px);
  background-size: 12px 12px;
  pointer-events: none;
  z-index: 0;
}

/* ---- Highlighted keyword + hand-drawn squiggle underline ---- */
.hl {
  color: var(--accent);
  position: relative;
  display: inline-block;
  padding-bottom: 0.12em;
}
.hl::after {
  content: "";
  position: absolute;
  left: 2px; right: 2px; bottom: -0.06em;
  height: 9px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='9' viewBox='0 0 24 9'%3E%3Cpath d='M1.5 2 V8 M1.5 5 H22.5 M22.5 2 V8' fill='none' stroke='%238B5A2B' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: repeat-x;
  background-size: 24px 9px;
}
html[data-theme="dark"] .hl::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='9' viewBox='0 0 24 9'%3E%3Cpath d='M1.5 2 V8 M1.5 5 H22.5 M22.5 2 V8' fill='none' stroke='%23D4954B' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
}

/* ---- Typography ----
   Big Shoulders carries the big, characterful moments only (h1) — an
   industrial, condensed grotesque with real weight, used with
   restraint rather than everywhere. h2-h4 use Archivo, a steadier
   grotesque that still reads confident at heading sizes without
   competing with h1 for attention. */
h1 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  text-transform: none;
}
h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 4.8vw, 4.4rem); }
h2 { font-size: clamp(1.85rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.08rem; }

p { color: var(--text-secondary); }

.mono { font-family: var(--font-mono); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent-amber);
  box-shadow: 0 0 0 3px rgba(var(--amber-rgb), 0.2);
}

.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head p { margin-top: 14px; font-size: 1.05rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.gradient-text {
  background: linear-gradient(100deg, var(--accent) 20%, var(--accent-amber) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---- Layout helpers ---- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.section { padding: 108px 0; position: relative; }
.section-tight { padding: 72px 0; }

main { display: block; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.94rem;
  white-space: nowrap;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.2s ease, border-color 0.2s ease;
  border: 1.5px solid transparent;
}
.btn svg { width: 16px; height: 16px; }

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(var(--accent-rgb), 0.28);
}
.btn-primary:hover { transform: translateY(-2px); background: var(--accent-dim); box-shadow: 0 14px 32px rgba(var(--accent-rgb), 0.34); }

.btn-secondary {
  background: var(--surface);
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.btn-secondary:hover { background: var(--surface-hover); border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.btn-ghost {
  color: var(--text-secondary);
  padding: 13px 18px;
}
.btn-ghost:hover { color: var(--accent); }

.btn-block { width: 100%; }
.btn-sm { padding: 10px 18px; font-size: 0.85rem; }

/* ---- Badges / tags ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 13px;
  border-radius: var(--radius-full);
  background: var(--surface-hover);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--text-secondary);
}
.badge.accent { color: var(--accent-dim); border-color: transparent; background: rgba(var(--accent-rgb), 0.1); }
.badge.amber { color: #3E4A54; border-color: transparent; background: rgba(var(--amber-rgb), 0.14); }

/* ---- Cards ---- */
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.card:hover {
  transform: translateY(-5px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}
.card.band-soft { background: var(--bg-soft); }

/* ============================================================
   NAVIGATION
   ============================================================ */
.status-strip {
  height: var(--status-h);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0E1013;
  border-bottom: 1px solid #0E1013;
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: #9098A0;
  letter-spacing: 0.01em;
  gap: 10px;
}
.status-strip .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-amber);
  box-shadow: 0 0 0 3px rgba(var(--amber-rgb), 0.22);
  animation: pulse-dot 2.4s ease-in-out infinite;
}
.status-strip strong { color: #ffffff; font-weight: 600; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
  transition: border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}
.site-nav.scrolled { background: rgba(255, 255, 255, 0.97); box-shadow: 0 4px 20px rgba(20,45,32,0.05); }

.nav-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
}
.nav-brand .brand-mark {
  color: var(--accent);
  font-weight: 800;
  font-size: 1.3em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 9px 14px;
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-links a:hover { color: var(--accent-dim); background: var(--surface-hover); }
.nav-links a.active { color: var(--accent-dim); background: rgba(var(--accent-rgb), 0.1); font-weight: 600; }

.nav-actions { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--text-secondary);
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.icon-btn:hover { color: var(--accent-dim); background: var(--surface-hover); border-color: var(--border); }
.icon-btn svg { width: 18px; height: 18px; }

.nav-toggle { display: none; }

/* Hidden by default at every width; responsive.css gives it its mobile
   fixed-panel positioning and .open transition inside the breakpoint. */
.mobile-menu { display: none; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: 76px 0 96px;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero h1 { margin-bottom: 20px; }
.hero-lede { font-size: 1.14rem; max-width: 480px; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 44px; }

.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; }

/* Terminal — the one deliberate dark accent card in an otherwise light system */
.terminal {
  background: #0E1013;
  border: 1px solid #2A2D33;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #121418;
  border-bottom: 1px solid #2A2D33;
}
.terminal-dot { width: 11px; height: 11px; border-radius: 50%; }
.terminal-dot.r { background: #A8432E; }
.terminal-dot.y { background: #D4954B; }
.terminal-dot.g { background: #7C9473; }
.terminal-title { margin-left: 8px; font-family: var(--font-mono); font-size: 0.75rem; color: #6E7680; }
.terminal-body {
  padding: 22px 20px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.85;
  min-height: 280px;
}
.terminal-body .prompt { color: #D4954B; }
.terminal-body .path { color: #8A93A0; }
.terminal-line { color: #A3A6AB; white-space: pre-wrap; word-break: break-word; }
.terminal-line .ok { color: #7C9473; }
.terminal-line .warn { color: #D4954B; }
.terminal-cursor {
  display: inline-block;
  width: 8px; height: 16px;
  background: #D4954B;
  vertical-align: middle;
  animation: blink 1s steps(1) infinite;
}

/* ============================================================
   PROFILE CARD
   ============================================================ */
.profile-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  max-width: 380px;
}
.profile-avatar {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: url('../images/avatar.jpg') center/cover no-repeat;
  flex-shrink: 0;
}
.profile-meta { flex: 1; min-width: 0; }
.profile-meta strong { display: block; font-size: 0.95rem; color: var(--text-primary); }
.profile-meta span { font-size: 0.82rem; color: var(--text-tertiary); }
.profile-social { display: flex; gap: 6px; }

/* ============================================================
   STATS
   ============================================================ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.stat-cell {
  background: var(--bg-elevated);
  padding: 32px 24px;
  text-align: center;
}
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  color: var(--text-primary);
}
.stat-num .accent { color: var(--accent); }
.stat-label { margin-top: 6px; font-size: 0.82rem; color: var(--text-tertiary); }

/* ============================================================
   TECH MARQUEE
   ============================================================ */
.marquee-wrap {
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex;
  gap: 14px;
  width: max-content;
  animation: marquee 32s linear infinite;
}
.marquee-wrap:hover .marquee-track { animation-play-state: paused; }
.tech-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}
.tech-chip svg { width: 20px; height: 20px; color: var(--accent); }

/* ============================================================
   PROJECT / COURSE-STYLE CARDS
   ============================================================ */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
/* Modifier classes for non-default column counts. Using a class instead of
   an inline style means responsive.css can actually override it — an inline
   style attribute beats any external stylesheet rule regardless of media
   query, which was silently breaking these grids on mobile. */
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.project-media {
  display: block;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #16181C, #1B1E22);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  margin: 10px 10px 0;
  border-radius: calc(var(--radius-lg) - 8px);
  width: calc(100% - 20px);
}
.project-media svg { width: 100%; height: 100%; }
.project-provider {
  position: absolute;
  top: 12px; right: 12px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-dim);
}
.project-live-badge {
  position: absolute;
  top: 12px; left: 12px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: rgba(124,148,115,0.92);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(124,148,115,0.4);
  font-size: 0.72rem;
  font-weight: 600;
  color: #F1EFEA;
  display: flex;
  align-items: center;
  gap: 5px;
}
.project-live-badge::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #F1EFEA;
}
.badge.success { color: #3F5C39; border-color: transparent; background: rgba(124,148,115,0.18); }
.project-body { padding: 22px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.project-body h3 { font-size: 1.12rem; }
.project-body h3 a:hover { color: var(--accent); }
.project-desc { font-size: 0.92rem; }
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 6px; }
.project-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-weight: 500;
  padding-top: 14px;
  margin-top: 4px;
  border-top: 1px dashed var(--border);
}

/* Filters / search bar for projects & blog */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.filter-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 9px 18px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border-strong);
  background: var(--bg-elevated);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: all 0.2s ease;
}
.chip:hover { border-color: var(--accent); color: var(--accent-dim); }
.chip.active { background: var(--bg-elevated); color: var(--accent); border-color: var(--accent); font-weight: 600; }

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 8px 10px 18px;
  background: var(--bg-elevated);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-full);
  min-width: 240px;
}
.search-box svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; }
.search-box input { background: none; border: none; color: var(--text-primary); width: 100%; font-size: 0.9rem; }
.search-box input::placeholder { color: var(--text-tertiary); }

.sort-select {
  padding: 10px 14px;
  background: var(--bg-elevated);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-tertiary);
}
.empty-state svg { width: 48px; height: 48px; margin: 0 auto 16px; color: var(--text-tertiary); }

/* ============================================================
   TIMELINE
   ============================================================ */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 6px; bottom: 6px;
  width: 2px;
  background: var(--border);
}
.timeline-item { position: relative; padding-bottom: 40px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -32px; top: 4px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 3px solid var(--accent);
}
.timeline-date { font-family: var(--font-body); font-weight: 600; font-size: 0.8rem; color: var(--accent); margin-bottom: 6px; }
.timeline-item h4 { margin-bottom: 6px; }
.timeline-item p { font-size: 0.92rem; }

/* ============================================================
   TABS
   ============================================================ */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 32px; flex-wrap: wrap; }
.tab-btn {
  padding: 12px 18px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.92rem;
  border-bottom: 2px solid transparent;
  transform: translateY(1px);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.tab-btn:hover { color: var(--accent-dim); }
.tab-btn.active { color: var(--accent); border-color: var(--accent); font-weight: 600; }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fade-in 0.4s var(--ease); }

/* ============================================================
   ACCORDION
   ============================================================ */
.accordion-item { border-bottom: 1px solid var(--border); }
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 4px;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--text-primary);
}
.accordion-trigger svg { width: 18px; height: 18px; color: var(--accent); transition: transform 0.3s var(--ease); flex-shrink: 0; margin-left: 16px; }
.accordion-item.open .accordion-trigger svg { transform: rotate(45deg); }
.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
}
.accordion-panel-inner { padding: 0 4px 22px; }
.accordion-panel-inner p { font-size: 0.94rem; }

/* ============================================================
   SKILL BARS / PROGRESS
   ============================================================ */
.skill-row { margin-bottom: 18px; }
.skill-row-head { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: 0.88rem; }
.skill-row-head span:last-child { color: var(--accent-dim); font-weight: 600; font-size: 0.8rem; }
.progress-track { height: 7px; background: var(--surface-hover); border: 1px solid var(--border); border-radius: var(--radius-full); overflow: hidden; }
.progress-fill { height: 100%; border-radius: var(--radius-full); background: linear-gradient(90deg, var(--accent-dim), var(--accent)); width: 0%; transition: width 1.2s var(--ease); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { border-top: 1px solid var(--border); padding: 64px 0 0; margin-top: 80px; background: var(--bg-soft); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand p { margin-top: 14px; max-width: 280px; font-size: 0.9rem; }
.footer-col h5 { font-family: var(--font-body); font-weight: 700; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-tertiary); margin-bottom: 16px; }
.footer-col a, .footer-col span { display: block; color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 12px; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--accent-dim); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-tertiary);
}
.footer-bottom .status-strip { border: none; height: auto; padding: 0; background: none; }
.footer-bottom .status-strip strong { color: var(--accent-dim); }
.footer-bottom .status-strip .dot { background: var(--accent); }

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s var(--ease);
  z-index: 90;
  box-shadow: var(--shadow-md);
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--accent); color: #ffffff; border-color: var(--accent); }
.back-to-top svg { width: 18px; height: 18px; }

/* ============================================================
   SEARCH MODAL
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(20,30,24,0.45);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 12vh 20px 20px;
  opacity: 0; visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.search-modal {
  width: 100%; max-width: 560px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(-16px);
  transition: transform 0.3s var(--ease);
}
.modal-overlay.open .search-modal { transform: translateY(0); }
.search-modal-input {
  display: flex; align-items: center; gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}
.search-modal-input svg { width: 18px; height: 18px; color: var(--accent); }
.search-modal-input input { flex: 1; background: none; border: none; color: var(--text-primary); font-size: 1rem; }
.search-modal-input kbd {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-tertiary);
  border: 1px solid var(--border-strong);
  padding: 3px 6px;
  border-radius: 5px;
}
.search-results { max-height: 360px; overflow-y: auto; padding: 8px; }
.search-result-item {
  display: block;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  transition: background 0.15s ease;
}
.search-result-item:hover, .search-result-item.active { background: var(--surface-hover); }
.search-result-item strong { display: block; font-size: 0.92rem; color: var(--text-primary); }
.search-result-item span { font-size: 0.8rem; color: var(--text-tertiary); }
.search-empty { padding: 40px 20px; text-align: center; color: var(--text-tertiary); font-size: 0.9rem; }

/* ============================================================
   BREADCRUMBS
   ============================================================ */
.breadcrumbs { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-tertiary); margin-bottom: 28px; flex-wrap: wrap; }
.breadcrumbs a:hover { color: var(--accent-dim); }
.breadcrumbs svg { width: 12px; height: 12px; }

/* ============================================================
   TOOLTIP
   ============================================================ */
[data-tooltip] { position: relative; }
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--text-primary);
  color: #ffffff;
  font-size: 0.72rem;
  padding: 6px 10px;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0; visibility: hidden;
  transition: all 0.2s ease;
  pointer-events: none;
  z-index: 50;
}
[data-tooltip]:hover::after { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

/* ============================================================
   PAGE HERO (inner pages)
   ============================================================ */
.page-hero { padding: 60px 0 52px; }

/* ============================================================
   BLOG POST
   ============================================================ */
.blog-post-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
  padding-bottom: 90px;
}
.toc-aside { position: sticky; top: calc(var(--nav-h) + var(--status-h) + 24px); align-self: start; }
.toc-link { display: block; font-size: 0.85rem; color: var(--text-tertiary); padding: 7px 0; border-left: 2px solid var(--border); padding-left: 14px; transition: all 0.2s ease; }
.toc-link:hover { color: var(--accent); border-color: var(--accent); }

.blog-post-body { max-width: 680px; font-size: 1.02rem; }
.blog-post-body h2 { margin: 44px 0 16px; scroll-margin-top: 120px; }
.blog-post-body p { margin-bottom: 18px; font-size: 1.02rem; line-height: 1.75; color: var(--text-secondary); }
.code-block {
  background: #0E1013;
  border: 1px solid #2A2D33;
  border-radius: var(--radius-md);
  padding: 20px 22px;
  overflow-x: auto;
  margin: 8px 0 26px;
}
.code-block code { font-family: var(--font-mono); font-size: 0.86rem; color: #C4A576; line-height: 1.7; }

/* ============================================================
   CONTACT FORM
   ============================================================ */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 8px; }
.form-group input, .form-group textarea {
  width: 100%;
  padding: 13px 16px;
  background: var(--bg-elevated);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: border-color 0.2s ease;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 140px; }
.form-status { margin-top: 14px; font-size: 0.88rem; min-height: 20px; }
.form-status.success { color: var(--accent-dim); }
.form-status.error { color: var(--accent-rose); }

/* ============================================================
   CERTIFICATION CARDS
   ============================================================ */
.cert-card { padding: 24px; display: flex; flex-direction: column; gap: 14px; align-items: center; text-align: center; }
.cert-badge-img { width: 100%; max-width: 230px; height: 230px; object-fit: contain; margin: 0 auto 4px; display: block; }
.cert-card.pending { border-style: dashed; }
.cert-card.pending .cert-badge-img { opacity: 0.4; filter: grayscale(1); }
.cert-card.pending .cert-date-row { color: var(--text-tertiary); }
.cert-icon { width: 46px; height: 46px; border-radius: 13px; background: linear-gradient(135deg, var(--accent), var(--accent-amber)); display: flex; align-items: center; justify-content: center; color: #ffffff; font-family: var(--font-heading); font-weight: 700; font-size: 0.85rem; }
.cert-icon.amber { background: linear-gradient(135deg, var(--accent-amber), #4E5860); }
.cert-card h4 { font-size: 1.05rem; }
.cert-issuer { font-size: 0.85rem; color: var(--text-tertiary); }
.cert-date-row { display: flex; align-items: center; gap: 8px; font-size: 0.8rem; color: var(--accent-dim); font-weight: 600; margin-top: 4px; }
.cert-date-row svg { width: 14px; height: 14px; }

/* ============================================================
   RESUME
   ============================================================ */
.resume-sheet { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 56px; }
.resume-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; margin-bottom: 40px; padding-bottom: 32px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.resume-section { margin-bottom: 36px; }
.resume-section h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); font-family: var(--font-body); font-weight: 700; margin-bottom: 20px; }
.resume-entry { display: grid; grid-template-columns: 160px 1fr; gap: 20px; margin-bottom: 22px; }
.resume-entry-date { font-weight: 600; font-size: 0.8rem; color: var(--text-tertiary); }
.resume-entry h4 { font-size: 1rem; margin-bottom: 4px; }
.resume-entry .org { font-size: 0.88rem; color: var(--text-tertiary); margin-bottom: 8px; }
.resume-entry ul { padding-left: 18px; list-style: disc; }
.resume-entry li { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 6px; }

/* ============================================================
   404
   ============================================================ */
.error-page { min-height: 60vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 80px 20px; }
.error-code { font-family: var(--font-display); font-size: clamp(5rem, 16vw, 9rem); font-weight: 700; line-height: 1; background: linear-gradient(100deg, var(--accent), var(--accent-amber)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ============================================================
   THEME: DARK MODE (secondary / opt-in via toggle)
   Same brand accents (forest green + gold), inverted surfaces.
   ============================================================ */
html[data-theme="dark"] {
  --bg: #0E1013;
  --bg-elevated: #16181C;
  --bg-soft: #1B1E22;
  --surface: #16181C;
  --surface-hover: #1D2024;
  --border: #2A2D33;
  --border-strong: #383C43;
  --text-primary: #F1EFEA;
  --text-secondary: #A3A6AB;
  --text-tertiary: #6E7680;

  /* Brass reads lighter/warmer on dark bg than the bronze used for
     light mode — same hue family, lightness tuned per-background so
     both stay comfortably above WCAG AA rather than sharing one value
     that only really works on one of the two backgrounds. */
  --accent: #D4954B;
  --accent-dim: #B87D42;
  --accent-rgb: 212, 149, 75;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 12px 28px rgba(0,0,0,0.35);
  --shadow-lg: 0 28px 64px rgba(0,0,0,0.5);
}
html[data-theme="dark"] .site-nav { background: rgba(14,16,19,0.82); }
html[data-theme="dark"] .site-nav.scrolled { background: rgba(14,16,19,0.96); }
html[data-theme="dark"] .project-media { background: linear-gradient(135deg, #16181C, #1B1E22); }
html[data-theme="dark"] .project-provider { background: rgba(14,16,19,0.85); color: var(--accent); }
html[data-theme="dark"] [data-tooltip]::after { background: #ffffff; color: #0E1013; }