:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e3e6ec;
  --text: #1f2430;
  --text-soft: #6b7280;
  --primary: #2f6bff;
  --primary-soft: #eaf0ff;
  --danger: #d93b3b;
  --danger-soft: #fdeced;
  --warn: #b45309;
  --warn-soft: #fff5e6;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 4px 16px rgba(16, 24, 40, 0.06);
}

* { box-sizing: border-box; }

/* hidden 属性优先级高于这里的 display 声明，避免占位层/预览层切换失效 */
#placeholder[hidden],
#viewer-wrap[hidden] {
  display: none !important;
}

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 16px;
  gap: 12px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand { display: flex; align-items: center; gap: 10px; }

.logo {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--primary);
  color: #fff;
  display: grid; place-items: center;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text span { color: var(--text-soft); font-size: 12px; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px;
}

/* file:// 协议降级提示 */
.notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  background: var(--warn-soft);
  border: 1px solid #f3d19e;
  color: var(--warn);
  font-size: 12px;
  line-height: 1.6;
}

.notice-icon {
  flex: 0 0 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--warn);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  margin-top: 1px;
}

.notice-sub { margin-top: 2px; opacity: .95; }
.notice code { background: rgba(0,0,0,.05); padding: 1px 4px; border-radius: 4px; }

.url-row { display: flex; gap: 8px; }

.input {
  flex: 1;
  min-width: 0;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fbfcfd;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

.input.short { flex: 0 0 180px; }

.input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
  background: #fff;
}

.btn {
  height: 38px;
  padding: 0 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}

.btn:hover { background: #f2f4f8; }

.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 600;
}

.btn.primary:hover { background: #2459e0; }
.btn.primary:disabled { opacity: .6; cursor: not-allowed; }

.pick { display: inline-flex; }
.pick .btn.ghost { display: inline-flex; align-items: center; height: 34px; }

.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.samples { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.samples .label { color: var(--text-soft); font-size: 12px; }

.chip {
  height: 26px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fbfcfd;
  color: var(--text-soft);
  font-size: 12px;
  cursor: pointer;
}

.chip:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-soft); }

.status { font-size: 12px; color: var(--text-soft); }
.status.error { color: var(--danger); }
.status.warn { color: var(--warn); }
.status.ok { color: #15803d; }

.stage {
  flex: 1;
  min-height: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.placeholder {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text-soft);
  text-align: center;
  padding: 24px;
}

.ph-icon { font-size: 40px; color: #c9cfdb; }
.placeholder h3 { margin: 4px 0 0; color: var(--text); font-size: 16px; }
.placeholder p { margin: 0; font-size: 13px; }

.tips {
  margin: 14px 0 0;
  padding: 12px 16px;
  list-style: none;
  text-align: left;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: #fbfcfd;
  font-size: 12px;
  color: var(--text-soft);
}

.tips li { padding: 3px 0; }
.tips strong { color: var(--text); }

.viewer-wrap { height: 100%; }

flyfish-file-viewer { display: block; height: 100%; }

.banner {
  position: absolute;
  left: 12px; right: 12px; bottom: 12px;
  z-index: 5;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--warn-soft);
  border: 1px solid #f3d19e;
  color: var(--warn);
  font-size: 12px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.banner.error { background: var(--danger-soft); border-color: #f5c2c2; color: var(--danger); }
.banner code { background: rgba(0,0,0,.05); padding: 1px 4px; border-radius: 4px; }

@media (max-width: 720px) {
  .url-row { flex-wrap: wrap; }
  .input.short { flex: 1 1 100%; }
  .app { padding: 10px; }
}