/* ===== 智能装修工坊 样式表 ===== */
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

:root {
  --main: #7c5cff;
  --cyan: #22d3ee;
  --pink: #ff5ca8;
  --amber: #ffb347;
  --panel: rgba(255, 255, 255, .06);
  --line: rgba(255, 255, 255, .12);
  --text: #e8ecff;
  --muted: #9aa3c7;
}

html, body { margin: 0; padding: 0; }

body {
  min-height: 100vh;
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at 50% 30%, #171a3a, #0b0e20);
  background-attachment: fixed;
  overflow-x: hidden;
}

button { font-family: inherit; }

/* ===== 顶部栏 ===== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 20px;
  background: rgba(11, 14, 32, .72);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.logo {
  margin: 0;
  font-size: 20px;
  letter-spacing: 2px;
  background: linear-gradient(90deg, var(--main), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  white-space: nowrap;
}
.top-right { display: flex; align-items: center; gap: 14px; }
.privacy {
  font-size: 12px;
  color: var(--muted);
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(34, 211, 238, .08);
  white-space: nowrap;
}

/* ===== 玻璃面板通用 ===== */
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ===== 布局 ===== */
.layout {
  max-width: 1500px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

/* ===== 侧边工具箱 ===== */
.sidebar {
  width: 300px;
  flex: none;
  padding: 14px;
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
}
.side-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.side-sec {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}
.side-sec:first-of-type { border-top: none; padding-top: 4px; }
.side-title {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 2px;
}
.side-tip { margin: 0 0 8px; font-size: 11px; color: var(--muted); line-height: 1.5; }

/* 工具按钮组 */
.tool-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 9px 4px 7px;
  font-size: 12px;
  color: var(--text);
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .1s;
}
.tool-btn .tool-ico { color: var(--muted); display: flex; }
.tool-btn:hover { border-color: rgba(124, 92, 255, .6); }
.tool-btn:active { transform: scale(.96); }
.tool-btn.active {
  background: rgba(124, 92, 255, .22);
  border-color: var(--main);
  box-shadow: 0 0 0 1px rgba(124, 92, 255, .35) inset;
}
.tool-btn.active .tool-ico { color: #cdbcff; }

/* 墙色色块 */
.swatches { display: grid; grid-template-columns: repeat(8, 1fr); gap: 6px; margin: 10px 0 8px; }
.swatch {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .25);
  cursor: pointer;
  padding: 0;
  transition: transform .1s, border-color .12s, box-shadow .12s;
}
.swatch:hover { transform: scale(1.12); }
.swatch.active {
  border-color: #fff;
  box-shadow: 0 0 0 2px var(--main);
}
.custom-color {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 10px;
}
.custom-color input {
  width: 42px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
}

/* 滑块行 */
.range-row { display: block; margin: 9px 0; font-size: 12px; color: var(--muted); }
.range-row > span { display: flex; justify-content: space-between; align-items: center; margin-bottom: 5px; }
.range-row b { color: var(--text); font-weight: 600; }
.temp-ends { display: inline-flex; align-items: center; gap: 6px; }
.temp-ends i { font-style: normal; font-size: 11px; color: var(--muted); }
input[type="range"] {
  width: 100%;
  margin: 0;
  accent-color: var(--main);
  cursor: pointer;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 14px;
  font-size: 13px;
  color: var(--text);
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  text-decoration: none;
  transition: filter .15s, transform .1s, background .15s;
  user-select: none;
}
.btn:hover { filter: brightness(1.18); }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .4; cursor: not-allowed; filter: none; }
.btn-block { display: flex; width: 100%; margin-top: 8px; }
.btn-mini { padding: 4px 10px; font-size: 12px; margin-top: 0; }
.btn-row { display: flex; gap: 8px; margin-top: 8px; }
.btn-row .btn { flex: 1; margin-top: 0; }
.btn-primary { background: linear-gradient(135deg, #7c5cff, #6a48e8); border-color: transparent; font-weight: 600; }
.btn-cyan { background: linear-gradient(135deg, #19b8d0, #22d3ee); color: #06232a; border-color: transparent; font-weight: 600; }
.btn-pink { background: linear-gradient(135deg, #e84a92, #ff5ca8); color: #2a0718; border-color: transparent; font-weight: 600; }
.btn-amber { background: linear-gradient(135deg, #f0992f, #ffb347); color: #2e1c05; border-color: transparent; font-weight: 600; }
.btn-ghost { background: rgba(255, 255, 255, .06); }
.btn-ghost2 { background: rgba(255, 255, 255, .05); }

/* ===== 贴纸库 ===== */
.sticker-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.sticker-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 2px 4px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: grab;
  touch-action: none;
}
.sticker-tile:active { cursor: grabbing; }
.sticker-tile:hover { border-color: rgba(34, 211, 238, .6); }
.sticker-tile canvas { width: 48px; height: 48px; pointer-events: none; }
.sticker-tile span { font-size: 10px; color: var(--muted); pointer-events: none; }

/* 拖拽缩略图时的浮动幽灵 */
.drag-ghost {
  position: fixed;
  z-index: 99;
  width: 64px;
  height: 64px;
  pointer-events: none;
  border-radius: 14px;
  background: rgba(124, 92, 255, .3);
  border: 1px solid rgba(255, 255, 255, .3);
  display: none;
}
.drag-ghost canvas { width: 64px; height: 64px; }
.drag-ghost.on { display: block; }

/* ===== 舞台 ===== */
.stage { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 10px; }
.canvas-frame {
  position: relative;
  min-height: 62vh;
  border-radius: 24px;
  padding: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(124, 92, 255, .08), transparent 60%),
    rgba(0, 0, 0, .28);
  border: 1px solid rgba(255, 255, 255, .06);
  overflow: hidden;
}
#canvas {
  display: none;
  max-width: 100%;
  max-height: calc(100vh - 220px);
  border-radius: 8px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, .55);
  touch-action: none;
  background: #111;
}
.canvas-frame.is-ready #canvas { display: block; }

.processing-badge {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 8;
  padding: 6px 16px;
  font-size: 12px;
  color: #dffcff;
  background: rgba(8, 20, 28, .82);
  border: 1px solid rgba(34, 211, 238, .45);
  border-radius: 999px;
  pointer-events: none;
}
.stage-hint {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  min-height: 20px;
  letter-spacing: 1px;
}

/* ===== 空状态上传卡片 ===== */
.empty-card {
  position: absolute;
  inset: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 2px dashed rgba(124, 92, 255, .55);
  border-radius: 20px;
  background: rgba(124, 92, 255, .06);
  cursor: pointer;
  text-align: center;
  padding: 20px;
  transition: background .15s, border-color .15s;
}
.empty-card.drag-over { background: rgba(34, 211, 238, .12); border-color: var(--cyan); }
.canvas-frame.is-ready .empty-card { display: none; }
.upload-ico { margin-bottom: 4px; }
.empty-title { margin: 0; font-size: 20px; font-weight: 700; }
.empty-sub { margin: 0; font-size: 13px; color: var(--muted); }
.empty-actions { display: flex; gap: 12px; margin-top: 10px; }
.empty-actions .btn { padding: 11px 22px; font-size: 14px; }
.empty-note { margin: 12px 0 0; font-size: 12px; color: var(--muted); }

/* ===== 移动端抽屉开关 ===== */
.drawer-fab {
  display: none;
  position: fixed;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom));
  z-index: 60;
  padding: 12px 22px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #7c5cff, #6a48e8);
  border: none;
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(124, 92, 255, .45);
  cursor: pointer;
}

/* ===== 移动端自适应 ===== */
@media (max-width: 900px) {
  .topbar { padding: 10px 14px; }
  .logo { font-size: 17px; letter-spacing: 1px; }
  .privacy { display: none; }
  .layout { padding: 10px; display: block; }
  .canvas-frame { min-height: 52vh; padding: 14px; border-radius: 18px; }
  #canvas { max-height: calc(100vh - 250px); }
  .empty-card { inset: 14px; }
  .empty-title { font-size: 17px; }

  .sidebar {
    position: fixed;
    left: 10px;
    right: 10px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    top: auto;
    width: auto;
    max-height: 68vh;
    z-index: 70;
    border-radius: 20px;
    transform: translateY(calc(100% + 24px));
    transition: transform .25s ease;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, .5);
    background: rgba(20, 24, 48, .92);
  }
  .sidebar.open { transform: translateY(0); }
  .drawer-fab { display: block; }
  .drawer-fab.hidden { display: none; }
}

/* 滚动条 */
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, .15); border-radius: 3px; }