/* =========================================================
   Photo → Drawing — styles
   Mobile-first, dark, minimal. No external fonts or assets.
   ========================================================= */

:root {
  --bg: #0f0e17;
  --card: #1a1826;
  --card-2: #232033;
  --border: #2e2a42;
  --text: #f2eff9;
  --muted: #a39db8;
  --accent-1: #ff8a5b;
  --accent-2: #ff4f9a;
  --accent-3: #9d6bff;
  --grad: linear-gradient(120deg, var(--accent-1), var(--accent-2) 55%, var(--accent-3));
  --radius: 18px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body { margin: 0; }

body {
  min-height: 100vh;
  min-height: 100dvh;
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(255, 79, 154, 0.12), transparent 60%),
    radial-gradient(800px 500px at 110% 10%, rgba(157, 107, 255, 0.12), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

.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;
}

/* ---------- Layout ---------- */

.view {
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 16px max(28px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.result-view { max-width: 980px; }

.hero { text-align: center; padding: 8px 0 4px; }
.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 7vw, 2.6rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.hero .arrow { color: var(--muted); font-weight: 400; }
.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p { margin: 10px auto 0; color: var(--muted); max-width: 36ch; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

/* ---------- Upload box ---------- */

.drop-zone {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  border: 2px dashed var(--border);
  border-radius: 14px;
  background: var(--card-2);
  cursor: pointer;
  overflow: hidden;
  transition: border-color 0.2s, background 0.2s;
}
.drop-zone:hover,
.drop-zone.dragging { border-color: var(--accent-2); background: #2a2540; }
.drop-zone:focus-within { outline: 2px solid var(--accent-3); outline-offset: 3px; }

.drop-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 24px;
  text-align: center;
  color: var(--muted);
}
.drop-empty svg { color: var(--accent-2); margin-bottom: 4px; }
.drop-empty strong { color: var(--text); font-size: 1.05rem; }
.drop-empty span { font-size: 0.85rem; }

.preview {
  display: block;
  width: 100%;
  max-height: 340px;
  object-fit: contain;
  background: #000;
}

.msg { margin: 10px 2px 0; font-size: 0.9rem; color: var(--muted); min-height: 1.2em; }
.msg.error { color: #ff8a8a; }
.msg.center { text-align: center; margin: 0; }

/* ---------- Options ---------- */

.options { display: flex; flex-direction: column; gap: 18px; }

.mode-picker { border: 0; margin: 0; padding: 0; }
.mode-picker legend { font-weight: 600; margin-bottom: 10px; padding: 0; }
.mode-picker { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
@media (max-width: 420px) { .mode-picker { grid-template-columns: 1fr 1fr; } }
.mode-picker legend { grid-column: 1 / -1; }

.mode-option { position: relative; cursor: pointer; }
.mode-option input { position: absolute; opacity: 0; pointer-events: none; }
.mode-card {
  display: flex;
  flex-direction: column;
  gap: 2px;
  height: 100%;
  padding: 10px;
  border: 2px solid var(--border);
  border-radius: 14px;
  background: var(--card-2);
  transition: border-color 0.2s, transform 0.15s;
}
.mode-card small { color: var(--muted); font-size: 0.78rem; line-height: 1.3; }
.mode-option input:checked + .mode-card { border-color: var(--accent-2); box-shadow: 0 0 0 3px rgba(255, 79, 154, 0.18); }
.mode-option input:focus-visible + .mode-card { outline: 2px solid var(--accent-3); outline-offset: 2px; }
.mode-option:active .mode-card { transform: scale(0.98); }

.swatch { display: block; height: 54px; border-radius: 9px; margin-bottom: 8px; }
.swatch-lineart {
  background:
    radial-gradient(circle at 30% 60%, transparent 16px, #5cf2ff 17px, transparent 19px),
    radial-gradient(circle at 70% 40%, transparent 12px, #ff5ca8 13px, transparent 15px),
    linear-gradient(115deg, transparent 45%, #ffd55c 46%, transparent 48%),
    #000;
}
/* Cartoon: a little figure colored in on paper, with graphite pencil outlines
   (the dark ring at the edge of each shape) and light pencil hatching behind. */
.swatch-cartoon {
  background:
    radial-gradient(circle at 50% 46%, #f4c7a1 0 12px, #3a363a 12px 13.5px, transparent 14px),
    radial-gradient(ellipse at 50% 36%, #5a3d30 0 19px, #3a363a 19px 20.5px, transparent 21px),
    radial-gradient(ellipse at 50% 125%, #e7766f 0 30px, #3a363a 30px 31.5px, transparent 32px),
    repeating-linear-gradient(120deg, transparent 0 6px, rgba(58, 54, 58, 0.16) 6px 7px),
    #f5eede;
}

/* Illustration: an inked storybook figure (tan skin, dark hair, ink
   outlines) with light pencil hatching, in warm, golden light. */
.swatch-illustration {
  background:
    radial-gradient(circle at 50% 46%, #d9a07a 0 12px, #22170f 12px 13.5px, transparent 14px),
    radial-gradient(ellipse at 50% 36%, #2b201c 0 19px, #22170f 19px 20.5px, transparent 21px),
    radial-gradient(ellipse at 50% 125%, #eeb3a8 0 30px, #22170f 30px 31.5px, transparent 32px),
    repeating-linear-gradient(120deg, transparent 0 7px, rgba(120, 80, 40, 0.12) 7px 8px),
    linear-gradient(160deg, #f7e7bd, #e9c58e);
}

.field-row { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.field-row label { font-weight: 600; }
output { font-variant-numeric: tabular-nums; color: var(--accent-1); font-weight: 600; }
.range-hints { display: flex; justify-content: space-between; font-size: 0.78rem; color: var(--muted); margin-top: 2px; }

input[type="range"] {
  width: 100%;
  height: 28px;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track { height: 6px; border-radius: 3px; background: var(--card-2); border: 1px solid var(--border); }
input[type="range"]::-moz-range-track { height: 6px; border-radius: 3px; background: var(--card-2); border: 1px solid var(--border); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px; height: 22px; margin-top: -9px;
  border-radius: 50%;
  background: var(--grad);
  border: 3px solid #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}
input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent-2);
  border: 3px solid #fff;
}
input[type="range"]:focus-visible { outline: 2px solid var(--accent-3); outline-offset: 4px; border-radius: 4px; }

/* Music picker */
.select {
  width: 100%;
  min-height: 46px;
  padding: 10px 40px 10px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6' fill='none' stroke='%23a39db8' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 12px center / 18px;
  color: var(--text);
  font: inherit;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}
.select:focus-visible { outline: 2px solid var(--accent-3); outline-offset: 2px; }
.btn.mini { min-height: 32px; padding: 4px 12px; font-size: 0.85rem; border-radius: 999px; }

/* Toggle switch (the real checkbox is visually hidden but still accessible) */
.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-weight: 600; cursor: pointer; }
.switch {
  position: relative;
  flex: none;
  width: 50px; height: 30px;
  border-radius: 999px;
  background: var(--card-2);
  border: 1px solid var(--border);
  transition: background 0.2s;
}
.switch::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.2s;
}
.switch-row input:checked + .switch { background: var(--accent-2); border-color: transparent; }
.switch-row input:checked + .switch::after { transform: translateX(20px); }
.switch-row input:focus-visible + .switch { outline: 2px solid var(--accent-3); outline-offset: 3px; }

/* ---------- Buttons ---------- */

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--card-2);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  padding: 12px 18px;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.12s, opacity 0.2s, background 0.2s;
  min-height: 46px;
}
.btn:hover:not(:disabled) { background: #2d2942; }
.btn:active:not(:disabled) { transform: scale(0.97); }
.btn:focus-visible { outline: 2px solid var(--accent-3); outline-offset: 2px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn.primary { background: var(--grad); border-color: transparent; color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--grad); filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.big { width: 100%; padding: 16px; font-size: 1.1rem; border-radius: 16px; }

.footer { text-align: center; color: var(--muted); font-size: 0.85rem; padding: 4px 8px; }
.footer .version { opacity: 0.6; }

/* ---------- Result view ---------- */

.result-bar { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 8px; }
.result-bar h2 { margin: 0; text-align: center; font-size: 1.15rem; }
.result-bar .spacer { width: 88px; }

.stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  padding: 10px;
  border-radius: var(--radius);
  background: #07060c;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.stage canvas {
  display: block;
  max-width: 100%;
  max-height: 68vh;
  width: auto;
  height: auto;
  border-radius: 10px;
}

.loading, .empty-msg {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 40px 20px;
  text-align: center;
  color: var(--muted);
}
.loading p { margin: 0; font-weight: 600; color: var(--text); animation: pulse 1.4s ease-in-out infinite; }
.spinner {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 4px solid var(--card-2);
  border-top-color: var(--accent-2);
  animation: spin 0.9s linear infinite;
}
.empty-msg p { margin: 0; max-width: 34ch; color: var(--text); }
.empty-emoji { font-size: 2.4rem; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: 0.55; } }

.progress { height: 6px; border-radius: 3px; background: var(--card-2); overflow: hidden; }
.progress-bar { height: 100%; width: 0; background: var(--grad); }

.actions { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; }
.note { margin: 0; text-align: center; font-size: 0.85rem; color: var(--muted); }

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: max(20px, env(safe-area-inset-bottom));
  transform: translate(-50%, 30px);
  max-width: calc(100% - 32px);
  padding: 12px 18px;
  border-radius: 12px;
  background: #fff;
  color: #111;
  font-weight: 600;
  font-size: 0.92rem;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 10;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}