* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --line: #e6e8ec;
  --text: #16181c;
  --muted: #6b7280;
  --accent: #16181c;
  --radius: 14px;
  font-size: 15px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app-shell { min-height: 100vh; display: flex; flex-direction: column; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px; background: var(--panel); border-bottom: 1px solid var(--line);
}
.brand-lockup { display: flex; align-items: center; gap: 12px; }
.brand-avatar { width: 40px; height: 40px; border-radius: 10px; }
.eyebrow { font-size: 11px; letter-spacing: 0.12em; color: var(--muted); font-weight: 600; }
.topbar h1 { font-size: 18px; }
.status-pill {
  font-size: 12px; color: var(--muted); border: 1px solid var(--line);
  padding: 6px 12px; border-radius: 999px; background: var(--bg);
}

.workspace {
  flex: 1; display: grid; grid-template-columns: 400px 1fr; gap: 0; min-height: 0;
}

/* ---------- 左侧控制面板 ---------- */
.control-panel {
  border-right: 1px solid var(--line); background: var(--panel);
  overflow-y: auto; height: calc(100vh - 69px); padding: 18px;
  display: flex; flex-direction: column; gap: 22px;
}
.control-section { display: flex; flex-direction: column; gap: 12px; }
.section-heading { display: flex; gap: 10px; align-items: baseline; }
.section-heading span { font-size: 12px; font-weight: 700; color: #b3b8c2; }
.section-heading h2 { font-size: 15px; }
.section-heading h2 em { font-style: normal; color: var(--muted); font-weight: 500; font-size: 12px; }
.section-heading p { font-size: 12px; color: var(--muted); margin-top: 2px; }
.hidden { display: none !important; }

.segmented { display: flex; background: var(--bg); border-radius: 10px; padding: 3px; gap: 3px; }
.segmented button {
  flex: 1; border: 0; background: transparent; padding: 8px 10px; border-radius: 8px;
  font-size: 13px; color: var(--muted); cursor: pointer; font-family: inherit;
}
.segmented button.active { background: var(--accent); color: #fff; font-weight: 600; }
.segmented.small button { padding: 6px 8px; font-size: 12px; }

.search-row { display: flex; gap: 8px; }
#search {
  flex: 1; border: 1px solid var(--line); border-radius: 10px; padding: 9px 12px;
  font-size: 13px; font-family: inherit; outline: none; background: var(--bg);
}
#search:focus { border-color: #9aa2b1; background: #fff; }
.icon-button {
  border: 1px solid var(--line); background: var(--panel); border-radius: 10px;
  width: 38px; cursor: pointer; font-size: 15px;
}
.icon-button:hover { background: var(--bg); }

.chip-row { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.mini-label { font-size: 12px; color: var(--muted); }
.chip {
  border: 1px solid var(--line); background: var(--panel); color: var(--text);
  border-radius: 999px; padding: 5px 11px; font-size: 12px; cursor: pointer; font-family: inherit;
}
.chip em { font-style: normal; color: var(--muted); margin-left: 4px; font-size: 11px; }
.chip.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.chip.active em { color: #cfd3da; }

.post-list {
  list-style: none; display: flex; flex-direction: column; gap: 8px;
  max-height: 430px; overflow-y: auto; padding-right: 2px;
}
.post-item {
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  cursor: pointer; background: var(--panel);
}
.post-item:hover { border-color: #b6bcc8; }
.post-item.active { border-color: var(--accent); background: #f7f7f8; }
.post-item .pi-meta { display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); margin-bottom: 4px; }
.post-item .pi-text {
  font-size: 13px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 3;
  -webkit-box-orient: vertical; overflow: hidden;
}
.list-more { font-size: 12px; color: var(--muted); text-align: center; padding: 6px; }

#custom-text {
  border: 1px solid var(--line); border-radius: 10px; padding: 12px; font-size: 14px;
  line-height: 1.6; font-family: inherit; resize: vertical; outline: none; background: var(--bg);
}
#custom-text:focus { border-color: #9aa2b1; background: #fff; }

.option-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.option { display: flex; flex-direction: column; gap: 6px; }
.option.full { grid-column: 1 / -1; }
input[type="range"] { width: 100%; accent-color: var(--accent); }

.bg-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.bg-thumb {
  aspect-ratio: 3/4; border-radius: 8px; overflow: hidden; cursor: pointer;
  border: 2px solid transparent; padding: 0; background: var(--bg);
}
.bg-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.bg-thumb.active { border-color: var(--accent); }
.bg-import { display: flex; gap: 8px; }
.profile-row { display: flex; align-items: center; gap: 10px; }
.profile-avatar { width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--line); }
.text-input {
  border: 1px solid var(--line); border-radius: 10px; padding: 8px 11px;
  font-size: 13px; font-family: inherit; outline: none; background: var(--bg); width: 100%;
}
.text-input:focus { border-color: #9aa2b1; background: #fff; }
.file-chip { display: inline-flex; align-items: center; }
#bg-url {
  flex: 1; border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px;
  font-size: 12px; font-family: inherit; outline: none;
}

/* ---------- 右侧预览 ---------- */
.preview-panel { display: flex; flex-direction: column; min-width: 0; height: calc(100vh - 69px); }
.preview-topbar {
  display: flex; align-items: center; gap: 10px; padding: 12px 22px;
  border-bottom: 1px solid var(--line); background: var(--panel); font-size: 13px;
}
.preview-topbar .dot { width: 8px; height: 8px; border-radius: 50%; background: #f43f5e; }
.preview-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.preview-actions a { color: var(--muted); text-decoration: none; font-size: 12px; }
.preview-actions a:hover { color: var(--text); }
.ghost-btn {
  border: 1px solid var(--line); background: var(--panel); border-radius: 8px;
  padding: 7px 12px; font-size: 12px; cursor: pointer; font-family: inherit;
}
.ghost-btn:hover { background: var(--bg); }
.ghost-btn.active { border-color: #fe2c55; color: #fe2c55; }
.primary-btn {
  border: 0; background: var(--accent); color: #fff; border-radius: 8px;
  padding: 8px 16px; font-size: 13px; font-weight: 600; cursor: pointer; font-family: inherit;
}
.primary-btn:hover { opacity: 0.88; }
.primary-btn:disabled { opacity: 0.5; cursor: wait; }

.stage-wrap {
  flex: 1; overflow: auto; display: flex; align-items: center; justify-content: center;
  padding: 28px;
  background:
    repeating-conic-gradient(#eceef1 0% 25%, #f8f9fa 0% 50%) 0 0 / 24px 24px;
}

/* 导出目标节点：固定 540x720（导出 pixelRatio=2 → 1080x1440） */
.stage {
  position: relative; width: 540px; height: 720px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; box-shadow: 0 18px 50px rgba(15, 20, 32, 0.28);
}
.stage-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

/* 9:16 竖图（1080×1920，预览 1/2 缩放）；安全区顶部改 175px（显示 88px） */
.stage.tall { height: 960px; }
.stage.tall .sg-top { top: 88px; }
.stage.tall .sg-label-top { top: 92px; }

/* 抖音安全区参考线（画布 1080×1440，预览为 1/2 缩放）：
   顶部 150px 状态栏/导航、右侧 140px 互动按钮列、底部 300px 文案/音乐/评论、左侧 60px 边距 */
.safe-guides { position: absolute; inset: 0; pointer-events: none; z-index: 5; }
.safe-guides.hidden { display: none; }
.sg-line { position: absolute; }
.sg-top    { left: 0; right: 0; top: 75px;     border-top: 1.5px dashed rgba(254, 44, 85, 0.85); }
.sg-right  { top: 0; bottom: 0; right: 70px;   border-right: 1.5px dashed rgba(254, 44, 85, 0.85); }
.sg-bottom { left: 0; right: 0; bottom: 150px; border-bottom: 1.5px dashed rgba(254, 44, 85, 0.85); }
.sg-left   { top: 0; bottom: 0; left: 30px;    border-left: 1.5px dashed rgba(254, 44, 85, 0.6); }
.sg-label {
  position: absolute; font-size: 10px; line-height: 1; padding: 3px 6px;
  border-radius: 4px; background: rgba(254, 44, 85, 0.85); color: #fff; white-space: nowrap;
}
.sg-label-top { top: 79px; left: 34px; }
.sg-label-right { right: 74px; top: 50%; transform: translateY(-50%) rotate(90deg); transform-origin: right center; }
.sg-label-bottom { bottom: 154px; left: 34px; }

.stage.card-only { height: auto; min-height: 0; box-shadow: none; overflow: visible; }
.stage.card-only .stage-bg { display: none; }
.stage.card-only .tweet-card { box-shadow: 0 18px 50px rgba(15, 20, 32, 0.28); }

/* 竖图模式下卡片浮动：可整体缩放、可拖动 */
.stage .tweet-card.floating {
  position: absolute; left: 50%; top: 50%;
  cursor: grab; touch-action: none;
}
.stage .tweet-card.floating:active { cursor: grabbing; }
.stage .tweet-card.floating.dragging { user-select: none; }

.drag-hint { font-size: 12px; color: var(--muted); }

/* ---------- 推文卡片 ---------- */
.tweet-card {
  position: relative; width: 84%; background: #fff; color: #0f1419;
  border-radius: 0; padding: 22px 24px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}
.tc-head { display: flex; align-items: center; gap: 11px; }
.tc-avatar { width: 44px; height: 44px; border-radius: 50%; }
.tc-id { flex: 1; min-width: 0; }
.tc-name { font-weight: 700; font-size: 15.5px; display: flex; align-items: center; gap: 4px; }
.tc-badge { width: 17px; height: 17px; }
.tc-handle { color: #536471; font-size: 13.5px; margin-top: 1px; }
.tc-x-logo { width: 20px; height: 20px; color: #0f1419; align-self: flex-start; }

.tc-body {
  margin-top: 14px; font-size: 17px; line-height: 1.62;
  white-space: pre-wrap; word-break: break-word;
}
.tc-body.size-m { font-size: 15px; line-height: 1.58; }
.tc-body.size-s { font-size: 13px; line-height: 1.55; }
.tc-body.size-xs { font-size: 11.5px; line-height: 1.5; }

.tc-metrics {
  margin-top: 16px; padding-top: 12px; border-top: 1px solid #eff3f4;
  display: flex; gap: 18px; color: #536471; font-size: 12.5px;
}
.tc-metrics span { display: inline-flex; align-items: center; gap: 5px; }
.tc-metrics svg { width: 15px; height: 15px; fill: currentColor; }
.tc-metrics b { color: #0f1419; font-weight: 600; }
.tc-metrics.hidden { display: none; }

/* 黑色主题卡片 */
.tweet-card.dark { background: #000; color: #e7e9ea; }
.tweet-card.dark .tc-handle { color: #71767b; }
.tweet-card.dark .tc-x-logo { color: #e7e9ea; }
.tweet-card.dark .tc-metrics { border-top-color: #2f3336; color: #71767b; }
.tweet-card.dark .tc-metrics b { color: #e7e9ea; }

@media (max-width: 980px) {
  .workspace { grid-template-columns: 1fr; }
  .control-panel { height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .preview-panel { height: auto; }
  .stage { transform: scale(0.72); transform-origin: top center; }
}