:root {
  --primary: #d64000;
  --primary-glow: rgba(214, 64, 0, 0.45);
  --dark: #1a1f2e;
  --panel: #f4f6fa;
  --border: #e2e6ef;
  --text-muted: #6b7280;
  --nav-well: #eef1f6;
  --nav-hover: #e1e6f0;
  --white: #ffffff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--panel);
  color: var(--dark);
}

.hidden { display: none !important; }

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 20px;
  background: var(--dark);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  image-rendering: -webkit-optimize-contrast;
}

.brand-logo {
  font-size: 32px;
  font-weight: 700;
  text-shadow: 0 0 14px rgba(214, 64, 0, 0.6);
}

.brand-st { color: #fff; }
.brand-two { color: #ff7a33; }

.btn-ghost {
  border: none;
  background: transparent;
  color: #e8eaed;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.13);
  color: #fff;
}

.main-shell {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 72px - 36px);
  padding: 12px 16px 8px;
  min-height: 0;
}

.tab-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2px;
  padding: 10px 5px 5px;
  margin: 0 auto 14px;
  background: var(--nav-well);
  border: 1px solid var(--border);
  border-radius: 13px;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 13.5px;
  font-weight: 600;
  padding: 9px 16px;
  margin: 2px;
  border-radius: 9px;
  cursor: pointer;
}

.tab-btn:hover:not(.active) {
  background: var(--nav-hover);
  color: var(--dark);
}

.tab-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 12px var(--primary-glow);
}

.tab-icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.tab-panel {
  flex: 1;
  min-height: 0;
  min-width: 0;
  width: 100%;
  animation: fadeSlide 0.22s ease-out;
}

.tab-panel.active {
  display: flex;
  flex-direction: column;
}

.tab-panel:not(.active) { display: none; }

#panel-portal.active {
  flex: 1;
  min-height: 0;
}

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.placeholder-card {
  margin: auto;
  max-width: 520px;
  padding: 32px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: center;
}

.portal-layout {
  display: grid;
  grid-template-columns: minmax(300px, 420px) minmax(0, 1fr);
  gap: 16px;
  flex: 1;
  min-height: 0;
  min-width: 0;
  width: 100%;
}

.search-column,
.preview-column {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  min-height: 0;
  min-width: 0;
}

.search-column {
  display: flex;
  flex-direction: column;
  padding: 16px;
  grid-column: 1;
}

.panel-title {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 600;
}

.search-box,
.combo-box {
  width: 100%;
  padding: 10px 14px;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: #fff;
  margin-bottom: 8px;
}

.search-box:focus,
.combo-box:focus {
  outline: none;
  border-color: var(--primary);
}

.field-label {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.year-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.year-btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-muted);
  border-radius: 14px;
  padding: 5px 12px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
}

.year-btn:hover { background: var(--nav-well); }
.year-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.results-list {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow: auto;
  flex: 1;
}

.result-group-header {
  padding: 10px 8px;
  margin: 6px 0 2px;
  background: #f3f4f6;
  border-radius: 6px;
  pointer-events: none;
}

.result-group-header strong {
  display: block;
  font-size: 13px;
}

.result-group-header span {
  display: block;
  font-size: 11px;
  color: var(--primary);
  margin-top: 4px;
}

.result-group-header small {
  display: block;
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 2px;
}

.result-item {
  border-radius: 4px;
  padding: 8px;
  margin: 2px 0;
  cursor: pointer;
  background: #fff;
  border: 1px solid transparent;
}

.result-item:hover { background: #fafafa; border-color: var(--border); }
.result-item.selected { border-color: var(--primary); background: #fff7f3; }
.result-item.indented {
  margin-left: 14px;
  background: #fafafa;
  border: 1px solid var(--border);
}

.result-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 4px;
}

.tag-date {
  background: var(--dark);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

.tag-date.current { background: var(--primary); }

.tag-type {
  background: #fff3ed;
  color: var(--primary);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
}

.tag-product {
  font-size: 11px;
  color: var(--text-muted);
  align-self: center;
}

.result-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
}

.result-snippet {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  max-height: 36px;
}

.preview-column {
  display: flex;
  flex-direction: column;
  padding: 24px;
  min-height: 0;
  min-width: 0;
  grid-column: 2;
  overflow: hidden;
}

.preview-title {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  line-height: 1.3;
  word-wrap: break-word;
}

.preview-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 10px 0 12px;
  flex-wrap: wrap;
}

.type-badge {
  background: #fff3ed;
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
}

.preview-product {
  color: var(--text-muted);
  font-size: 13px;
}

.preview-frame-wrap {
  flex: 1 1 auto;
  min-height: 240px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fafafa;
  overflow: hidden;
}

.preview-frame {
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
}

.preview-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  flex-shrink: 0;
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-secondary {
  background: #fff;
  color: var(--dark);
  border: 1px solid var(--border);
}

.embed-toolbar {
  display: flex;
  gap: 6px;
  margin-bottom: 2px;
  flex-shrink: 0;
}

.embed-toolbar .btn {
  padding: 5px 10px;
  font-size: 12px;
}

.embed-hint {
  margin: 0 0 4px;
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.embed-frame-wrap {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.embed-frame {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 520px;
  border: none;
  background: #fff;
}

#panel-thom.active,
#panel-ai.active {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

body.embed-active .main-shell {
  padding: 4px 8px 4px;
  height: calc(100vh - 56px);
}

body.embed-active .app-header {
  height: 56px;
  padding: 0 14px;
}

body.embed-active .brand-logo {
  font-size: 26px;
}

body.embed-active .tab-bar {
  margin-bottom: 6px;
  padding: 4px 4px 2px;
}

body.embed-active .tab-btn {
  padding: 6px 11px;
  font-size: 12px;
}

body.embed-active .tab-icon {
  width: 15px;
  height: 15px;
}

.status-bar {
  height: 36px;
  padding: 4px 16px;
  background: #fff;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
}

.status-bar.hidden { display: none; }

#statusText {
  font-size: 12px;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .portal-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(320px, 1fr);
    gap: 12px;
  }

  .search-column {
    grid-column: 1;
    max-height: 42vh;
  }

  .preview-column {
    grid-column: 1;
  }
}