:root {
  color-scheme: light dark;
  --surface: #f5e9d7;
  --surface-deep: #e4d2b5;
  --border: rgba(80, 55, 22, 0.3);
  --text: #2c1b09;
  --accent: #8e3b1f;
  --accent-bright: #c8641f;
  --ink: #1a1107;
  --grain-light: rgba(255, 255, 255, 0.05);
  --grain-dark: rgba(0, 0, 0, 0.05);
}

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

body {
  margin: 0;
  font-family:
    "Iowan Old Style", "Palatino Linotype", "Cormorant Garamond", serif;
  background: radial-gradient(circle at top, #fdf5e5 0%, #e2cfaa 100%);
  color: var(--text);
  min-height: 100vh;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(
      90deg,
      var(--grain-light),
      var(--grain-light) 2px,
      transparent 2px,
      transparent 4px
    ),
    repeating-linear-gradient(
      0dee,
      var(--grain-dark),
      var(--grain-dark) 2px,
      transparent 2px,
      transparent 4px
    );
  opacity: 0.35;
  mix-blend-mode: multiply;
}

.app {
  min-height: 100vh;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 0;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .app {
    padding: 0;
  }
}

.header {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 16px 20px;
  border-radius: 20px;
  background: var(--surface);
  box-shadow:
    inset 0 0 0 1.5px var(--border),
    0 20px 35px rgba(35, 16, 4, 0.18);
  border: 1px solid rgba(51, 30, 10, 0.2);
}

@media (min-width: 900px) {
  .header {
    flex-direction: row;
    justify-content: space-between;
    align-items: stretch;
    gap: 28px;
  }
}

.title-block h1 {
  margin: 0;
  font-size: 2rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.title-block h1::after {
  content: "";
  display: block;
  margin-top: 6px;
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-bright), transparent);
}

.hint {
  opacity: 0.85;
  margin: 6px 0 0;
  font-size: 0.95rem;
  line-height: 1.5;
  font-family: "Source Serif 4", Georgia, serif;
}

.topbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  background: var(--surface-deep);
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

.topbar input[type="file"] {
  flex: 1 1 220px;
}

.topbar button {
  flex: 0 0 auto;
}

button {
  border: 1px solid rgba(53, 27, 5, 0.45);
  background: linear-gradient(120deg, #f8dfc0, #e6b783);
  padding: 10px 18px;
  border-radius: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
  color: var(--ink);
  box-shadow: 0 8px 18px rgba(67, 26, 7, 0.25);
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(67, 26, 7, 0.3);
}

button:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 3px;
}

button:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(67, 26, 7, 0.25);
}

.stage-shell {
  flex: 1;
  display: flex;
  align-items: stretch;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.stage {
  flex: 1;
  width: 100%;
  height: 100%;
  max-width: none;
  border-radius: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(58, 29, 7, 0.3);
  background: linear-gradient(
    145deg,
    rgba(72, 45, 20, 0.7),
    rgba(15, 10, 6, 0.9)
  );
  box-shadow: none;
  position: relative;
}

.stage::before {
  content: "";
  position: absolute;
  inset: 12px;
  pointer-events: none;
  border-radius: 28px;
}

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

.value {
  font-variant-numeric: tabular-nums;
}

.control-bar {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: min(540px, calc(100% - 32px));
  background: linear-gradient(160deg, #5b3a1c, #3b220f);
  border: 2px solid rgba(20, 8, 2, 0.7);
  border-radius: 32px;
  padding: 20px;
  box-shadow: 0 20px 50px rgba(15, 6, 2, 0.6);
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 10;
  backdrop-filter: blur(12px);
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
  color: #f7e6ce;
}

.control-bar::before,
.control-bar::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.control-bar::after {
  border: none;
  inset: 12px;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05),
    rgba(0, 0, 0, 0.2)
  );
  opacity: 0.3;
}

.control-bar.collapsed {
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 40px) scale(0.98);
}

.control-panel {
  display: none;
  flex-direction: column;
  gap: 10px;
}

.control-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 24px 0 18px;
}

.control-panel.active {
  display: flex;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 244, 229, 0.85);
}

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

.control-panel input[type="color"] {
  width: 70px;
  height: 44px;
  border: none;
  padding: 0;
  border-radius: 12px;
  align-self: flex-start;
  box-shadow:
    inset 0 0 0 1px rgba(0, 0, 0, 0.4),
    0 4px 10px rgba(0, 0, 0, 0.4);
}

.control-icons {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.control-icon {
  width: 50px;
  height: 50px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.4rem;
}

.control-icon svg {
  width: 24px;
  height: 24px;
}

.control-icon.active {
  background: linear-gradient(120deg, #f9d49d, #df9c50);
  color: var(--ink);
  border-color: rgba(0, 0, 0, 0.4);
  box-shadow: 0 8px 15px rgba(248, 194, 85, 0.5);
}

.control-icon.color-picker-control,
.control-icon.color-picker-control.active {
  background: transparent;
  color: inherit;
}

.control-icon.color-picker-control {
  border: none;
  box-shadow: none;
}

.control-icon.color-picker-control.active {
  border: 2px solid rgba(0, 0, 0, 0.55);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.35);
}

.color-picker-control .color-chip {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.7);
  box-shadow:
    inset 0 0 0 1px rgba(0, 0, 0, 0.2),
    0 4px 12px rgba(0, 0, 0, 0.45);
  background: var(--color-chip-color, #000);
  display: block;
}

.control-hide {
  align-self: center;
  padding-inline: 40px;
  border-radius: 999px;
  background: linear-gradient(90deg, #f2c48a, #c07a3a);
  border-color: rgba(0, 0, 0, 0.45);
  color: #3b1604;
  font-weight: 700;
}

.control-open {
  position: fixed;
  bottom: 22px;
  right: 22px;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.45);
  background: radial-gradient(circle, #ffd091 0%, #cb7b3a 70%);
  color: #3a1703;
  font-weight: 700;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 32px rgba(23, 10, 3, 0.55);
  z-index: 9;
}

.control-open.visible {
  display: flex;
}

.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;
}