@font-face {
  font-family: "Poster Holidayfont";
  src: url("assets/fonts/Holidayfont-Regular.woff") format("woff");
  font-display: swap;
}

@font-face {
  font-family: "Poster FZ Lanting";
  src: url("assets/fonts/FZVariable-LanTingHeiK.woff") format("woff");
  font-display: swap;
}

@font-face {
  font-family: "Poster FZ Lanting GBK";
  src: url("assets/fonts/FZVariable-LanTingHeiK-GBK.woff") format("woff");
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #0b0b0c;
  --panel: #171719;
  --panel-strong: #202024;
  --line: rgba(255, 255, 255, 0.1);
  --text: #f7f5ef;
  --muted: rgba(247, 245, 239, 0.62);
  --accent: #ff2442;
  --mint: #28e4c2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 20% 0%, rgba(255, 36, 66, 0.16), transparent 24rem), var(--bg);
  color: var(--text);
  font-family: "Poster FZ Lanting";
}

button,
input,
textarea {
  font: inherit;
}

.app-shell {
  width: min(1180px, calc(100vw - 36px));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(300px, 460px) minmax(320px, 520px);
  gap: 42px;
  align-items: center;
  justify-content: center;
  padding: 32px 0;
}

.preview-panel {
  display: grid;
  place-items: center;
}

#posterCanvas {
  width: min(100%, 420px);
  aspect-ratio: 3 / 4;
  height: auto;
  border-radius: 8px;
  background: #050505;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--line);
  cursor: grab;
  touch-action: none;
  user-select: none;
}

#posterCanvas.is-dragging {
  cursor: grabbing;
}

.preview-hint {
  width: min(100%, 420px);
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(23, 23, 25, 0.86);
  backdrop-filter: blur(18px);
}

.brand-line {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
}

.brand-pill {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  font-weight: 800;
}

.upload-zone {
  min-height: 138px;
  border: 1px dashed rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.035);
  display: grid;
  place-items: center;
  gap: 4px;
  padding: 22px;
  text-align: center;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease;
}

.upload-zone:hover,
.upload-zone.is-dragging {
  border-color: var(--mint);
  background: rgba(40, 228, 194, 0.08);
}

.upload-zone input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.upload-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--panel-strong);
  color: var(--mint);
  font-size: 28px;
  line-height: 1;
}

.upload-zone strong {
  font-size: 16px;
}

.upload-zone small,
.field-group label {
  color: var(--muted);
  font-size: 13px;
}

.field-group {
  display: grid;
  gap: 8px;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.advanced-controls {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.025);
}

.advanced-controls summary {
  min-height: 42px;
  display: flex;
  align-items: center;
  padding: 0 13px;
  color: var(--text);
  cursor: pointer;
  font-weight: 800;
}

.advanced-controls .field-grid {
  padding: 0 13px 14px;
}

.advanced-controls .field-grid + .field-grid {
  padding-top: 4px;
}

input[type="text"],
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(7, 7, 8, 0.72);
  color: var(--text);
  padding: 12px 13px;
  outline: none;
}

textarea {
  resize: vertical;
}

input[type="text"]:focus,
textarea:focus {
  border-color: rgba(40, 228, 194, 0.62);
}

input[type="range"] {
  accent-color: var(--mint);
}

.quick-picks {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.quick-picks button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-strong);
  color: var(--text);
  cursor: pointer;
}

.quick-picks button:hover {
  border-color: rgba(255, 255, 255, 0.28);
}

.swatches {
  display: flex;
  gap: 10px;
}

.swatch {
  width: 28px;
  height: 28px;
  border: 2px solid transparent;
  border-radius: 50%;
  background: var(--swatch);
  cursor: pointer;
}

.swatch.is-active {
  border-color: var(--mint);
  box-shadow: 0 0 0 3px rgba(40, 228, 194, 0.16);
}

.download-button {
  min-height: 50px;
  border: 0;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--mint), #15b7ff);
  color: #03100e;
  font-weight: 900;
  cursor: pointer;
}

.download-button:hover {
  filter: brightness(1.07);
}

.download-button:disabled {
  cursor: progress;
  filter: saturate(0.7);
}

.download-result {
  display: grid;
  gap: 10px;
}

.download-result a {
  min-height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(40, 228, 194, 0.38);
  border-radius: 6px;
  color: var(--text);
  background: rgba(40, 228, 194, 0.08);
  text-decoration: none;
  font-weight: 800;
}

.download-result img {
  width: 96px;
  aspect-ratio: 3 / 4;
  border-radius: 6px;
  border: 1px solid var(--line);
  object-fit: cover;
}

@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: start;
  }

  #posterCanvas {
    width: min(100%, 360px);
  }

  .controls {
    padding: 18px;
  }
}

@media (max-width: 520px) {
  .app-shell {
    width: min(100vw - 24px, 420px);
    padding: 18px 0;
  }

  .field-grid,
  .quick-picks {
    grid-template-columns: 1fr;
  }
}