:root {
  --page-bg: #17191f;
  --panel-bg: #f2efe8;
  --panel-ink: #17191f;
  --muted: #6b665f;
  --line: rgba(23, 25, 31, 0.16);
  --accent: #d8753b;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 18% 18%, rgba(216, 117, 59, 0.18), transparent 28rem),
    linear-gradient(135deg, #101217 0%, #222733 100%);
  color: #f7f3ea;
  font-family: "Fira Sans", Arial, sans-serif;
}

nav.subpage-nav {
  background: rgba(12, 13, 17, 0.72);
}

.poster-app {
  width: min(1440px, 100%);
  min-height: calc(100vh - var(--subpage-nav-height));
  margin: 0 auto;
  padding: clamp(1rem, 2vw, 2rem);
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(320px, 420px);
  gap: clamp(1rem, 2vw, 2rem);
  align-items: start;
}

.poster-stage {
  min-height: calc(100vh - var(--subpage-nav-height) - 2rem);
  display: grid;
  place-items: center;
}

.poster-frame {
  width: min(100%, 76vh);
  aspect-ratio: 4 / 5;
  background: #090a0d;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.control-panel {
  width: 100%;
  align-self: stretch;
  padding: clamp(1rem, 2vw, 1.4rem);
  background: var(--panel-bg);
  color: var(--panel-ink);
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.32);
}

.panel-header {
  margin-bottom: 1rem;
}

.eyebrow {
  margin: 0 0 0.25rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  line-height: 1.04;
}

.drop-zone {
  min-height: 116px;
  margin-bottom: 1rem;
  border: 2px dashed rgba(23, 25, 31, 0.32);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.54);
  display: grid;
  place-items: center;
  gap: 0.15rem;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.drop-zone:hover,
.drop-zone.is-dragging {
  border-color: var(--accent);
  background: #fff9ef;
  transform: translateY(-1px);
}

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

.drop-zone__title,
.drop-zone__hint {
  display: block;
}

.drop-zone__title {
  font-size: 1rem;
  font-weight: 800;
}

.drop-zone__hint {
  color: var(--muted);
  font-size: 0.88rem;
}

.control-group {
  margin-bottom: 0.9rem;
}

label {
  display: block;
  margin-bottom: 0.35rem;
  color: #37332d;
  font-size: 0.82rem;
  font-weight: 800;
}

input,
textarea,
button {
  font: inherit;
}

input[type="text"],
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.72rem 0.75rem;
  background: #fffdf8;
  color: var(--panel-ink);
  font-weight: 600;
  resize: vertical;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

input[type="color"] {
  width: 100%;
  height: 42px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fffdf8;
}

.preset-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.preset,
.color-wheel-button,
.download-button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  font-weight: 800;
}

.preset {
  background: #fffdf8;
  color: #2b2824;
}

.preset.is-active {
  background: #24242a;
  color: #fffdf8;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.color-wheel-button {
  width: 100%;
  margin: 0.05rem 0 0.75rem;
  background: linear-gradient(90deg, #f15b5b, #f1b85b, #70c882, #5ba4f1, #a66df1, #f15b94);
  color: #17191f;
  border-color: rgba(23, 25, 31, 0.24);
}

.download-button {
  width: 100%;
  margin-top: 0.2rem;
  background: #17191f;
  color: #fffdf8;
}

.download-button:hover,
.color-wheel-button:hover,
.preset:hover {
  border-color: rgba(216, 117, 59, 0.72);
}

.color-dialog {
  width: min(680px, calc(100vw - 2rem));
  border: 0;
  border-radius: 8px;
  padding: clamp(1rem, 2vw, 1.4rem);
  background: #f2efe8;
  color: #17191f;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.48);
}

.color-dialog::backdrop {
  background: rgba(9, 10, 13, 0.68);
  backdrop-filter: blur(4px);
}

.color-dialog__header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.color-dialog h2 {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1;
}

.dialog-close {
  min-height: 38px;
  padding: 0 0.8rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fffdf8;
  color: #17191f;
  cursor: pointer;
  font-weight: 800;
}

.wheel-layout {
  display: grid;
  grid-template-columns: minmax(220px, 300px) 1fr;
  gap: 1.1rem;
  align-items: center;
}

.wheel-wrap {
  display: grid;
  place-items: center;
}

.hue-wheel {
  position: relative;
  width: min(100%, 280px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(
    hsl(0, 90%, 55%),
    hsl(60, 90%, 55%),
    hsl(120, 90%, 55%),
    hsl(180, 90%, 55%),
    hsl(240, 90%, 55%),
    hsl(300, 90%, 55%),
    hsl(360, 90%, 55%)
  );
  box-shadow: inset 0 0 0 18px rgba(255, 255, 255, 0.35), inset 0 0 0 46px #f2efe8;
}

.hue-wheel::after {
  content: "";
  position: absolute;
  inset: 34%;
  border-radius: 50%;
  background: #f2efe8;
}

.wheel-marker {
  --x: 50%;
  --y: 50%;
  position: absolute;
  left: var(--x);
  top: var(--y);
  z-index: 2;
  width: 18px;
  height: 18px;
  border: 3px solid #17191f;
  border-radius: 50%;
  background: var(--marker-color, #fff);
  box-shadow: 0 0 0 3px #fffdf8, 0 4px 10px rgba(0, 0, 0, 0.32);
  transform: translate(-50%, -50%);
}

.wheel-marker.is-base {
  width: 24px;
  height: 24px;
}

.wheel-controls {
  min-width: 0;
}

.swatch-list {
  display: grid;
  gap: 0.65rem;
  margin-top: 1rem;
}

.swatch-card {
  display: grid;
  grid-template-columns: 54px 1fr auto auto;
  gap: 0.55rem;
  align-items: center;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fffdf8;
}

.swatch-chip {
  width: 54px;
  aspect-ratio: 1;
  border-radius: 6px;
  border: 1px solid rgba(23, 25, 31, 0.18);
}

.swatch-name {
  display: block;
  font-size: 0.82rem;
  font-weight: 800;
}

.swatch-value {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.swatch-action {
  min-height: 34px;
  padding: 0 0.65rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f2efe8;
  color: #17191f;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 800;
}

@media (max-width: 920px) {
  .poster-app {
    grid-template-columns: 1fr;
  }

  .poster-stage {
    min-height: auto;
  }

  .poster-frame {
    width: min(100%, 620px);
  }
}

@media (max-width: 540px) {
  .poster-app {
    padding: 0.75rem;
  }

  .control-panel {
    border-radius: 0;
  }

  .control-grid {
    grid-template-columns: 1fr;
  }

  .preset-row {
    grid-template-columns: 1fr;
  }

  .wheel-layout {
    grid-template-columns: 1fr;
  }

  .swatch-card {
    grid-template-columns: 48px 1fr;
  }

  .swatch-action {
    grid-column: span 1;
  }
}