:root {
  --bg: #f2ece3;
  --panel: #fffaf3;
  --text: #2c241d;
  --accent: #b86a2a;
  --line: #e8d8c6;
  --muted: #7f6753;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 16% 18%, #fff8ee 0%, transparent 38%),
    radial-gradient(circle at 82% 12%, #f5e8d8 0%, transparent 32%),
    var(--bg);
  color: var(--text);
}

.container {
  min-height: 100vh;
  padding: 24px;
  display: grid;
  grid-template-columns: minmax(320px, 380px) 1fr;
  gap: 20px;
  max-width: 1320px;
  margin: 0 auto;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 10px 32px rgba(83, 55, 34, 0.1);
}

.controls {
  padding: 22px;
  align-self: start;
  position: sticky;
  top: 16px;
}

h1 {
  margin: 0;
  font-size: 26px;
  letter-spacing: 0.4px;
}

.desc {
  margin: 10px 0 18px;
  color: var(--muted);
  font-size: 14px;
}

.control-group {
  margin-top: 16px;
  padding: 12px;
  border: 1px solid #eadccc;
  border-radius: 12px;
  background: #fffcf8;
}

.group-title {
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.8px;
  color: #8e735e;
}

.sliders {
  display: grid;
  gap: 10px;
}

.sliders label,
.date-controls label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

.help-text {
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

input[type="range"] {
  width: 100%;
}

.date-controls {
  display: grid;
  gap: 10px;
}

.preset {
  margin-top: 14px;
}

.check-row {
  display: flex !important;
  align-items: center;
  gap: 8px;
}

select {
  border: 1px solid #d8c8b6;
  border-radius: 8px;
  background: #fffdfa;
  padding: 10px 10px;
  color: var(--text);
  width: 100%;
}

.actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
}

button {
  border: 0;
  background: #2f2b27;
  color: #fff;
  border-radius: 10px;
  padding: 11px 14px;
  cursor: pointer;
  flex: 1;
  font-weight: 600;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.preview {
  display: grid;
  place-items: center;
  padding: 20px;
  min-height: 70vh;
  position: relative;
}

canvas {
  width: min(100%, 760px);
  max-height: calc(100vh - 84px);
  object-fit: contain;
  background: #fbf7f2;
  border-radius: 10px;
  border: 1px solid #e2d6c8;
}

.preview-clickable {
  cursor: pointer;
}

.preview-hint {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  font-size: 12px;
  color: #fff;
  background: rgba(44, 36, 29, 0.64);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  padding: 6px 10px;
  pointer-events: none;
}

.fullscreen-modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  background: rgba(20, 15, 10, 0.95);
  display: none;
  flex-direction: column;
}

.fullscreen-modal.open {
  display: flex;
}

.fullscreen-toolbar {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.fullscreen-toolbar button {
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.fullscreen-stage {
  flex: 1;
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: 16px;
  touch-action: none;
}

#fullscreenImage {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transform-origin: center center;
  transition: transform 0.15s ease;
  will-change: transform;
}

@media (max-width: 920px) {
  .container {
    grid-template-columns: 1fr;
    padding: 12px 12px 96px;
    gap: 12px;
  }

  .preview {
    order: 1;
    min-height: auto;
    padding: 12px;
  }

  .controls {
    order: 2;
    padding: 14px;
    position: static;
  }

  h1 {
    font-size: 22px;
  }

  .sliders label,
  .date-controls label {
    font-size: 13px;
  }

  input[type="range"] {
    height: 28px;
  }

  .actions {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: 12px;
    margin-top: 0;
    padding: 10px;
    border-radius: 12px;
    border: 1px solid #e7d8c7;
    background: rgba(255, 250, 243, 0.92);
    backdrop-filter: blur(8px);
    box-shadow: 0 6px 20px rgba(50, 36, 24, 0.12);
    z-index: 10;
  }

  .fullscreen-toolbar {
    position: sticky;
    top: 0;
    background: rgba(20, 15, 10, 0.92);
  }
}