/* meshy.fun — Studio design system */
:root {
  --bg: #fafaf9;
  --panel: #ffffff;
  --ink: #0a0a0a;
  --ink-2: #525252;
  --ink-3: #a3a3a3;
  --line: #ececec;
  --line-2: #f4f4f4;
  --accent: #0a0a0a;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06);
  --shadow-lg: 0 1px 0 rgba(0,0,0,.04), 0 30px 60px -20px rgba(0,0,0,.15), 0 18px 36px -18px rgba(0,0,0,.12);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.01em;
  overflow: hidden;
}
a { color: inherit; }
button { font-family: inherit; }

/* ============ APP SHELL (3-column studio layout) ============ */
.app {
  display: grid;
  grid-template-columns: 280px 1fr 300px;
  height: 100vh;
}
.app.two-col { grid-template-columns: 1fr 320px; }
.app.solo { grid-template-columns: 1fr; }

.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.sidebar.right {
  border-right: none;
  border-left: 1px solid var(--line);
}

/* Brand block */
.brand {
  padding: 22px 22px 18px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}
.brand-mark {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: conic-gradient(from 220deg at 50% 50%, #ff7a59, #ffd56b, #6be3c2, #6ba6ff, #b48cff, #ff7a59);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.06);
  flex-shrink: 0;
}
.brand-name {
  font-family: 'Instrument Serif', serif;
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
}
.brand-tag {
  margin-left: auto;
  font-size: 10px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
}

/* Scrollable interior */
.scroll {
  overflow-y: auto;
  flex: 1;
}
.scroll::-webkit-scrollbar { width: 6px; }
.scroll::-webkit-scrollbar-thumb { background: #e5e5e5; border-radius: 3px; }

/* Section blocks inside sidebars */
.sec {
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
}
.sec:last-child { border-bottom: none; }
.sec-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  font-weight: 600;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.sec-title .count { color: var(--ink-3); font-weight: 500; }

/* Hint footer in sidebar */
.hint {
  font-size: 11px;
  color: var(--ink-3);
  text-align: center;
  padding: 14px;
  border-top: 1px solid var(--line);
  line-height: 1.55;
}
.hint kbd {
  background: var(--line-2);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 10px;
  font-family: 'SF Mono', Menlo, monospace;
  color: var(--ink-2);
}
.hint a { color: var(--ink-3); text-decoration: none; }
.hint a:hover { color: var(--ink-2); }
.powered-by {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.powered-by::before {
  content: '';
  width: 10px; height: 10px;
  border-radius: 3px;
  background: linear-gradient(135deg, #ff7a59, #b48cff);
}

/* ============ CANVAS AREA ============ */
.canvas-wrap {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow: hidden;
}
.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.toolbar .title {
  font-family: 'Instrument Serif', serif;
  font-size: 28px;
  font-style: italic;
  font-weight: 400;
  color: var(--ink);
  margin-right: auto;
  letter-spacing: -0.02em;
  line-height: 1;
}

.canvas {
  flex: 1;
  border-radius: 20px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #fff;
  min-height: 0;
}
.canvas.dotted {
  background: #f4f4f4;
  background-image: radial-gradient(circle at 1px 1px, rgba(0,0,0,.06) 1px, transparent 0);
  background-size: 18px 18px;
}
.canvas.checker {
  background:
    linear-gradient(45deg, #ececec 25%, transparent 25%),
    linear-gradient(-45deg, #ececec 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #ececec 75%),
    linear-gradient(-45deg, transparent 75%, #ececec 75%);
  background-size: 18px 18px;
  background-position: 0 0, 0 9px, 9px -9px, -9px 0;
  background-color: #fafafa;
}

/* Below-canvas strip (templates, output, etc.) */
.canvas-bottom { flex-shrink: 0; }

/* ============ BUTTONS ============ */
.btn {
  height: 36px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .15s ease;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.btn:hover { border-color: #d4d4d4; background: #fafafa; }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn.primary {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.btn.primary:hover { background: #222; }
.btn svg { width: 14px; height: 14px; }
.btn.icon { padding: 0; width: 36px; justify-content: center; }
.btn.full { width: 100%; justify-content: center; }
.btn.sm { height: 30px; padding: 0 10px; font-size: 12px; }

/* ============ CONTROLS ============ */
.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.row + input[type=range] { margin-bottom: 14px; }
.row + input[type=range]:last-child { margin-bottom: 0; }
.lbl, label {
  font-size: 12px;
  color: var(--ink-2);
  font-weight: 500;
}
.val {
  font-size: 11px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--line);
  border-radius: 4px;
  outline: none;
  margin: 0;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  background: #fff;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,.15);
}

input[type=text], input[type=number], select, textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: inherit;
  font-size: 13px;
  background: #fff;
  color: var(--ink);
}
input[type=text]:focus, input[type=number]:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--ink-3);
}
textarea {
  font-family: 'SF Mono', Menlo, monospace;
  font-size: 12px;
  resize: vertical;
  min-height: 80px;
  line-height: 1.5;
}
input[type=color] {
  width: 100%;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 2px;
  cursor: pointer;
  background: #fff;
}

/* ============ CHIPS ============ */
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  padding: 6px 11px;
  border-radius: 999px;
  background: var(--line-2);
  font-size: 12px;
  color: var(--ink-2);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all .15s ease;
  font-weight: 500;
  user-select: none;
}
.chip:hover { background: #eaeaea; color: var(--ink); }
.chip.active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ============ THUMB GRIDS ============ */
.thumb-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.thumb-grid.three { grid-template-columns: 1fr 1fr 1fr; }
.thumb-card {
  aspect-ratio: 1.2 / 1;
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,.06);
  transition: transform .18s ease, box-shadow .18s ease;
  background: #f4f4f4;
}
.thumb-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.thumb-card.active { box-shadow: 0 0 0 2px var(--ink), 0 8px 20px rgba(0,0,0,.1); }
.thumb-card .name {
  position: absolute;
  bottom: 6px; left: 8px;
  font-size: 10px;
  color: #fff;
  text-shadow: 0 1px 4px rgba(0,0,0,.4);
  font-weight: 500;
  letter-spacing: 0.01em;
}

/* Strip thumbs (below canvas) */
.strip {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.strip::-webkit-scrollbar { height: 0; }
.tpl {
  flex-shrink: 0;
  height: 48px;
  width: 72px;
  border-radius: 10px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform .15s ease;
  position: relative;
  overflow: hidden;
}
.tpl:hover { transform: translateY(-2px); }
.tpl.active { border-color: var(--ink); }
.tpl-label {
  position: absolute;
  bottom: 2px; left: 4px;
  font-size: 9px;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,.4);
  font-weight: 500;
}

/* ============ OUTPUT BOX ============ */
.output-wrap { position: relative; }
.output {
  background: #0a0a0a;
  color: #f4f4f4;
  border-radius: 10px;
  padding: 14px 50px 14px 14px;
  font-family: 'SF Mono', Menlo, monospace;
  font-size: 11.5px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  margin: 0;
}
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255,255,255,.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,.12);
  font-size: 10px;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.copy-btn:hover { background: rgba(255,255,255,.16); }

/* ============ SWATCHES & COLOR ROWS ============ */
.stops { display: flex; flex-direction: column; gap: 8px; }
.stop-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px;
  border-radius: 10px;
  background: var(--line-2);
}
.swatch {
  width: 28px; height: 28px;
  border-radius: 7px;
  border: 1px solid rgba(0,0,0,.08);
  cursor: pointer;
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
}
.swatch input {
  position: absolute; inset: 0;
  opacity: 0;
  width: 100%; height: 100%;
  cursor: pointer;
}
.stop-hex {
  font-family: 'SF Mono', Menlo, monospace;
  font-size: 11px;
  color: var(--ink-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex: 1;
}

/* ============ DROP ZONE (in-canvas) ============ */
.dropzone {
  position: absolute; inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 14px;
  color: var(--ink-3);
  cursor: pointer;
  text-align: center;
  padding: 40px;
}
.dropzone svg { width: 40px; height: 40px; opacity: .5; }
.dropzone-text { font-size: 13px; }
.dropzone-text a { text-decoration: underline; color: var(--ink-2); cursor: pointer; }
.canvas.drag-over { box-shadow: 0 0 0 2px var(--ink), var(--shadow-lg); }

/* ============ TOAST ============ */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(60px);
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 13px;
  opacity: 0;
  transition: all .3s ease;
  pointer-events: none;
  z-index: 1000;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ============ LANDING PAGE (only used by home /index.html) ============ */
body.landing { overflow: auto; }
.landing-wrap { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.landing-nav {
  display: flex;
  align-items: center;
  padding: 22px 0;
  gap: 24px;
}
.landing-nav a.brand-link { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.landing-nav .nav-end { margin-left: auto; display: flex; gap: 16px; align-items: center; font-size: 12px; color: var(--ink-3); }
.landing-nav .nav-end a { text-decoration: none; color: var(--ink-2); }

.hero {
  text-align: center;
  padding: 60px 0 50px;
}
.hero-eyebrow {
  display: inline-block;
  padding: 6px 14px;
  background: var(--line-2);
  border-radius: 999px;
  font-size: 12px;
  color: var(--ink-2);
  margin-bottom: 22px;
  font-weight: 500;
}
.hero h1 {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 400;
  margin: 0;
  line-height: 1;
  letter-spacing: -0.03em;
}
.hero h1 em {
  font-style: italic;
  background: linear-gradient(120deg, #ff7a59, #b48cff 50%, #6ba6ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  margin: 22px auto 0;
  font-size: 17px;
  max-width: 580px;
  color: var(--ink-2);
  line-height: 1.55;
}
.hero-cta { margin-top: 32px; display: flex; gap: 10px; justify-content: center; }

.cat-title {
  font-family: 'Instrument Serif', serif;
  font-size: 28px;
  font-style: italic;
  font-weight: 400;
  margin: 50px 0 18px;
}
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  text-decoration: none;
  color: inherit;
  transition: all .2s ease;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.card:hover { border-color: #d4d4d4; transform: translateY(-2px); box-shadow: var(--shadow); }
.card .thumb {
  aspect-ratio: 16/9;
  border-radius: 10px;
  overflow: hidden;
  position: relative;
  background: #f4f4f4;
}
.card h3 {
  margin: 4px 0 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 8px;
}
.card .desc {
  margin: 0;
  font-size: 12.5px;
  color: var(--ink-2);
  line-height: 1.5;
}
.card .badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 5px;
  background: var(--line-2);
  font-size: 9px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}
.card .badge.new { background: #0a0a0a; color: #fff; }
.landing-footer {
  margin-top: 60px;
  border-top: 1px solid var(--line);
  padding: 28px 0;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--ink-3);
}
.landing-footer a { color: var(--ink-2); text-decoration: none; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1100px) {
  .app { grid-template-columns: 240px 1fr 260px; }
}

/* Tablet / phone — stack the studio shell vertically.
   Canvas in the middle, sidebars become accordion-like sections above and below. */
@media (max-width: 880px) {
  html, body { height: auto; overflow: auto; }
  body { -webkit-text-size-adjust: 100%; }
  .app, .app.two-col, .app.solo {
    display: flex;
    flex-direction: column;
    height: auto;
    min-height: 100vh;
  }
  .sidebar, .sidebar.right {
    display: flex;
    border: none;
    border-bottom: 1px solid var(--line);
    max-height: none;
    flex: 0 0 auto;
  }
  .sidebar.right { border-bottom: none; border-top: 1px solid var(--line); }
  .brand { padding: 16px 18px 14px; }
  .scroll { overflow-y: visible; flex: 0 0 auto; }
  .sec { padding: 16px 18px; }
  .hint { padding: 12px; }

  /* Make sidebars collapsible on mobile via a summary header */
  .sidebar > .scroll { padding-bottom: 4px; }

  /* Canvas */
  .canvas-wrap {
    padding: 16px;
    order: 2;
    flex: 1;
    min-height: 0;
  }
  .canvas { min-height: 55vh; }
  .toolbar { flex-wrap: wrap; gap: 6px; }
  .toolbar .title {
    font-size: 22px;
    flex: 1 1 100%;
    margin-bottom: 4px;
    line-height: 1.1;
  }
  .toolbar .btn { font-size: 12px; height: 34px; padding: 0 12px; }
  .toolbar .btn svg { width: 12px; height: 12px; }

  /* Right sidebar appears below canvas */
  .sidebar.right { order: 3; }
  .sidebar:not(.right) { order: 1; }

  /* Thumb grids stay readable */
  .thumb-grid { grid-template-columns: 1fr 1fr 1fr; }
  .thumb-grid.three { grid-template-columns: repeat(4, 1fr); }
  .ex-grid, .example-grid, .bg-grid, .preset-grid { grid-template-columns: 1fr 1fr 1fr; }

  /* Output box stays inside container */
  .output { font-size: 10.5px; }

  /* Landing page tightens */
  .landing-wrap { padding: 0 18px; }
  .landing-nav { padding: 14px 0; gap: 12px; flex-wrap: wrap; }
  .landing-nav .nav-end { font-size: 11px; gap: 10px; }
  .hero { padding: 32px 0 24px; }
  .hero p { font-size: 15px; }
  .hero-cta { flex-direction: column; align-items: stretch; max-width: 260px; margin-left: auto; margin-right: auto; }
  .cat-title { font-size: 22px; margin: 30px 0 12px; }
  .cards { grid-template-columns: 1fr 1fr; gap: 12px; }
  .card { padding: 12px; gap: 10px; }
  .card h3 { font-size: 13px; }
  .card .desc { font-size: 11.5px; }
  .landing-footer { flex-direction: column; gap: 10px; text-align: center; padding: 24px 0; }
}

/* Narrow phones — cards go single column */
@media (max-width: 480px) {
  .cards { grid-template-columns: 1fr; }
  .thumb-grid, .thumb-grid.three { grid-template-columns: 1fr 1fr; }
  .ex-grid, .example-grid, .bg-grid, .preset-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 44px; }
  .canvas { min-height: 50vh; }
  .toolbar .btn { padding: 0 10px; font-size: 11px; }
}