/* ===================================================================
   KAMAFEU STUDIO - OFFICIAL WORKSTATION PORTAL STYLESHEET
   Clean, authentic audio software aesthetic (Inter + JetBrains Mono)
   =================================================================== */

:root {
  --bg-app: #0e1117;
  --bg-card: #151922;
  --bg-card-hover: #1b212d;
  --bg-darker: #0a0c10;
  --bg-surface: #1d2230;

  --border: #232938;
  --border-focus: #3b82f6;
  --border-subtle: #1a1f2c;

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent: #10b981; /* Pomar Emerald */
  --accent-hover: #059669;
  --accent-dim: rgba(16, 185, 129, 0.12);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 8px;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-sans);
}

body {
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* -------------------------------------------------------------------
   1. HEADER / NAVIGATION
   ------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(14, 17, 23, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  min-height: 60px;
  display: flex;
  align-items: center;
}

.header-inner {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}

.brand-icon {
  border-radius: 6px;
}

.brand-names {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}

.brand-tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex: 1 1 auto;
  justify-content: center;
  flex-wrap: wrap;
  row-gap: 0.25rem;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav-links a:hover {
  color: #fff;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-github-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.75rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-main);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-github-nav:hover {
  background-color: var(--bg-surface);
  border-color: #3b4256;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-main);
  padding: 0.3rem 0.6rem;
  font-size: 1.1rem;
  cursor: pointer;
}

@media (max-width: 1180px) and (min-width: 861px) {
  .header-inner {
    padding: 0.55rem 1rem;
    align-items: flex-start;
  }

  .brand,
  .header-actions {
    flex: 0 0 auto;
    margin-top: 0.15rem;
  }

  .nav-links {
    gap: 0.35rem 0.85rem;
    max-width: 620px;
    font-size: 0.8rem;
  }

  .nav-links a {
    font-size: 0.8rem;
    white-space: nowrap;
  }
}

/* -------------------------------------------------------------------
   2. HERO SECTION
   ------------------------------------------------------------------- */
.hero-section {
  padding: 4.5rem 0 3.5rem;
  background: radial-gradient(circle at 50% 10%, #161c28 0%, var(--bg-app) 70%);
  border-bottom: 1px solid var(--border);
}

.hero-content {
  text-align: center;
  max-width: 900px;
}

.version-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.25rem 0.75rem;
  background-color: var(--accent-dim);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent);
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 1.25rem;
}

.hero-lead {
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 820px;
  margin: 0 auto 2.25rem;
}

.hero-lead strong {
  color: #fff;
}

.hero-lead code {
  font-family: var(--font-mono);
  font-size: 0.95em;
  background-color: rgba(255, 255, 255, 0.08);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 3.5rem;
}

/* Button styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.btn-primary {
  background-color: var(--accent);
  color: #022c22;
}

.btn-primary:hover {
  background-color: #34d399;
}

.btn-secondary {
  background-color: var(--bg-card);
  border-color: var(--border);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: var(--bg-surface);
  border-color: #3b4256;
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  color: #fff;
  text-decoration: underline;
}

.btn-block {
  width: 100%;
}

.btn-xs {
  padding: 0.32rem 0.7rem;
  font-size: 0.8rem;
  border-radius: 5px;
}

.btn-preset-song {
  background-color: #064e3b;
  border: 1px solid var(--accent);
  color: #a7f3d0;
  font-weight: 700;
}

.btn-preset-song:hover {
  background-color: var(--accent);
  color: #022c22;
}

/* Software Frame */
.software-frame {
  background-color: var(--bg-darker);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
  margin-top: 1rem;
}

.frame-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.85rem;
  background-color: #12151d;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.frame-controls {
  display: flex;
  gap: 6px;
}

.frame-btn {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.frame-btn.close { background-color: #ef4444; }
.frame-btn.min { background-color: #f59e0b; }
.frame-btn.max { background-color: #10b981; }

.frame-title {
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 1rem;
}

.frame-screen {
  background-color: #000;
}

.main-screenshot {
  width: 100%;
  height: auto;
  display: block;
}

/* -------------------------------------------------------------------
   3. SECTIONS COMMON STYLES
   ------------------------------------------------------------------- */
.section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border);
}

.section-dark {
  background-color: #0b0e14;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.section-heading {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 0.6rem;
}

.section-subheading {
  font-size: 1.02rem;
  color: var(--text-muted);
  max-width: 780px;
  margin-bottom: 2.75rem;
}

/* -------------------------------------------------------------------
   4. INTERACTIVE VOCAL SYNTH KEYBOARD WIDGET
   ------------------------------------------------------------------- */
.synth-keyboard-widget {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.synth-top-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.synth-ctrl {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.synth-ctrl label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.synth-select {
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  color: #fff;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.synth-toggle-btn {
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.synth-toggle-btn.active {
  background-color: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* Preset Toolbar */
.synth-preset-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding: 0.65rem 0.85rem;
  background-color: var(--bg-darker);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
}

.preset-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
}

.phrase-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Piano Roll Container */
.piano-roll-container {
  margin-bottom: 1.25rem;
}

.piano-keyboard {
  display: flex;
  position: relative;
  height: 120px;
  background-color: #080a0f;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
  overflow-x: auto;
  user-select: none;
}

.key {
  position: relative;
  flex: 1;
  min-width: 32px;
  border: 1px solid rgba(0, 0, 0, 0.4);
  border-radius: 0 0 5px 5px;
  cursor: pointer;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  transition: background 0.08s ease;
}

.key.white {
  background-color: #e2e8f0;
  color: #1e293b;
  z-index: 1;
  height: 100%;
}

.key.white:hover {
  background-color: #cbd5e1;
}

.key.white:active, .key.white.playing {
  background-color: var(--accent) !important;
  color: #022c22 !important;
}

.key.black {
  background-color: #0f172a;
  color: #94a3b8;
  height: 60%;
  margin-left: -14px;
  margin-right: -14px;
  z-index: 2;
  min-width: 24px;
  border-radius: 0 0 4px 4px;
}

.key.black:hover {
  background-color: #1e293b;
}

.key.black:active, .key.black.playing {
  background-color: #059669 !important;
  color: #fff !important;
}

.key.active-root {
  border-bottom: 3px solid var(--accent);
}

/* Oscilloscope Monitor */
.synth-osc-monitor {
  background-color: var(--bg-darker);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem;
}

.osc-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  margin-bottom: 0.45rem;
}

.osc-title {
  color: var(--text-dim);
}

.osc-info {
  color: var(--accent);
  font-weight: 600;
}

.synth-canvas {
  width: 100%;
  height: 100px;
  background-color: #040608;
  border-radius: 4px;
  display: block;
}

/* -------------------------------------------------------------------
   5. FEATURE ROWS (WORKFLOWS)
   ------------------------------------------------------------------- */
.feature-rows {
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

.feature-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.feature-item.reverse {
  direction: rtl;
}

.feature-item.reverse .feature-text,
.feature-item.reverse .feature-graphic {
  direction: ltr;
}

.feature-text h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.85rem;
}

.feature-text p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.feature-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.feature-bullets li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding-left: 1.15rem;
  position: relative;
}

.feature-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
}

kbd {
  display: inline-block;
  padding: 0.15rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
}

/* Feature Graphics */
.code-box, .info-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.code-box-header, .card-head {
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.85rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.shortcut-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.sc-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.phoneme-ruler-mock {
  display: flex;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  line-height: 34px;
  margin-top: 0.85rem;
}

.ph-block.preutterance { background-color: rgba(239, 68, 68, 0.25); color: #fca5a5; width: 22%; }
.ph-block.consonant { background-color: rgba(245, 158, 11, 0.25); color: #fde68a; width: 28%; }
.ph-block.vowel { background-color: rgba(16, 185, 129, 0.25); color: #a7f3d0; width: 35%; }
.ph-block.overlap { background-color: rgba(59, 130, 246, 0.25); color: #bfdbfe; width: 15%; }

.dsp-chain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.5rem;
}

.chain-node {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.35rem 0.65rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-main);
}

.chain-arrow {
  color: var(--text-dim);
  font-weight: 700;
}

/* -------------------------------------------------------------------
   6. AUDIO ENGINES GRID
   ------------------------------------------------------------------- */
.engines-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.engine-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.engine-card.featured {
  border-color: rgba(16, 185, 129, 0.35);
  background-color: #161c24;
}

.engine-type {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}

.engine-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
}

.engine-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.engine-meta {
  margin-top: auto;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* -------------------------------------------------------------------
   7. OTO.INI CALIBRATOR WIDGET
   ------------------------------------------------------------------- */
.calibrator-widget {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.calibrator-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.ctrl-group label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.val-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}

.range-slider {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

.calibrator-display {
  background-color: var(--bg-darker);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.85rem;
}

.display-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  margin-bottom: 0.5rem;
}

.disp-title {
  color: var(--text-muted);
}

.disp-status {
  color: var(--accent);
}

.calibrator-canvas {
  width: 100%;
  height: 180px;
  background-color: #06080c;
  border-radius: 4px;
  display: block;
}

.calibrator-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.78rem;
  color: var(--text-dim);
}

.leg-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.leg-color {
  width: 8px;
  height: 8px;
  border-radius: 2px;
}

.leg-offset { background-color: #ef4444; }
.leg-consonant { background-color: #f59e0b; }
.leg-preut { background-color: #3b82f6; }
.leg-overlap { background-color: #8b5cf6; }
.leg-cutoff { background-color: #6b7280; }

/* -------------------------------------------------------------------
   8. FORMATS DATA TABLE
   ------------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: var(--bg-card);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.data-table th, .data-table td {
  padding: 0.85rem 1.15rem;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  background-color: var(--bg-surface);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

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

.data-table tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

.row-highlight td {
  background-color: rgba(16, 185, 129, 0.04);
}

.tag-yes {
  color: var(--accent);
  font-weight: 700;
}

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background-color: rgba(0, 0, 0, 0.3);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
}

/* -------------------------------------------------------------------
   9. THEME GALLERY
   ------------------------------------------------------------------- */
.theme-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.theme-tab-btn {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.theme-tab-btn:hover {
  background-color: var(--bg-surface);
  color: #fff;
}

.theme-tab-btn.active {
  background-color: var(--bg-surface);
  border-color: var(--accent);
  color: #fff;
}

.theme-viewer-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.theme-meta-bar {
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.theme-meta-bar h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.2rem;
}

.theme-meta-bar p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.theme-img-wrap {
  border-radius: 6px;
  overflow: hidden;
  background-color: #000;
  border: 1px solid var(--border);
}

.theme-preview-img {
  width: 100%;
  height: auto;
  display: block;
}

/* -------------------------------------------------------------------
   10. DOWNLOADS GRID
   ------------------------------------------------------------------- */
.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.download-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.dl-os-icon {
  font-size: 2rem;
  margin-bottom: 0.65rem;
  line-height: 1;
}

.download-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.25rem;
}

.dl-arch {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.dl-specs {
  list-style: none;
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1.5rem;
}

.download-card .btn {
  margin-top: auto;
}

/* -------------------------------------------------------------------
   11. SOURCE COMPILATION TERMINAL
   ------------------------------------------------------------------- */
.code-terminal {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.terminal-tabs {
  display: flex;
  flex-wrap: wrap;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.t-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  padding: 0.65rem 1.15rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.t-tab:hover {
  color: #fff;
}

.t-tab.active {
  color: #fff;
  border-bottom-color: var(--accent);
  background-color: rgba(255, 255, 255, 0.03);
}

.terminal-body {
  padding: 1rem;
  background-color: var(--bg-darker);
}

.terminal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.btn-copy-terminal {
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  color: #fff;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-copy-terminal:hover {
  background-color: var(--accent);
  color: #022c22;
  border-color: var(--accent);
}

pre {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: #e2e8f0;
  overflow-x: auto;
}

.inline-link {
  color: var(--accent);
  text-decoration: none;
}

.inline-link:hover {
  text-decoration: underline;
}

/* -------------------------------------------------------------------
   12. FOOTER
   ------------------------------------------------------------------- */
.site-footer {
  background-color: var(--bg-darker);
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.footer-inner {
  padding: 3rem 0 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2.5rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.65rem;
}

.footer-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}

.footer-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1rem;
}

.team-credits {
  font-size: 0.82rem;
  color: var(--text-dim);
}

.team-credits strong {
  color: var(--text-muted);
}

.footer-col-links {
  display: flex;
  gap: 2.5rem;
}

.links-group h4 {
  font-size: 0.82rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.65rem;
}

.links-group a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  margin-bottom: 0.45rem;
}

.links-group a:hover {
  color: #fff;
}

.footer-bottom-bar {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.bottom-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.back-top {
  color: var(--text-muted);
  text-decoration: none;
}

.back-top:hover {
  color: #fff;
}

/* -------------------------------------------------------------------
   13. RESPONSIVE QUERIES
   ------------------------------------------------------------------- */
@media (max-width: 860px) {
  .hero-title {
    font-size: 2.15rem;
  }
  .feature-item, .feature-item.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1.25rem;
    gap: 1rem;
  }
  .nav-links.show {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .footer-inner {
    grid-template-columns: 1fr;
  }
}
.language-switcher select {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main, #f8fafc);
  padding: 7px 24px 7px 9px;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

.language-switcher select option {
  background: #1e1b22;
  color: #f8fafc;
}

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