:root {
  --bg: #0f0b09;
  --panel: rgba(27, 20, 16, 0.84);
  --panel-soft: rgba(41, 31, 25, 0.65);
  --line: rgba(217, 119, 6, 0.2);
  --amber: #ca8a04;
  --copper: #d97706;
  --text: #f8f3ee;
  --muted: #d1c6bb;
  --soft: #9d9185;
  --shadow: 0 24px 64px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Outfit", "Microsoft YaHei UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(217, 119, 6, 0.18), transparent 23%),
    radial-gradient(circle at right top, rgba(202, 138, 4, 0.08), transparent 18%),
    linear-gradient(180deg, #0d0908 0%, #110d0b 100%);
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

button,
input,
textarea,
select {
  font: inherit;
}

.shell {
  width: min(1540px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 22px;
  padding: 18px 0 24px;
}

.glass-card {
  background: linear-gradient(180deg, rgba(34, 26, 21, 0.88), rgba(18, 14, 12, 0.78));
  border: 1px solid var(--line);
  border-radius: 24px;
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.sidebar {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: sticky;
  top: 14px;
  height: calc(100vh - 28px);
  overflow: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--amber), var(--copper));
  box-shadow: 0 0 18px rgba(217, 119, 6, 0.55);
}

.brand strong {
  display: block;
  font-size: 16px;
}

.brand p,
.muted,
.file-meta span,
.stat-card span,
.empty-state p {
  margin: 0;
  color: var(--muted);
}

.sidebar-section h1,
.banner-card h2 {
  margin: 8px 0 0;
  line-height: 1.04;
}

.sidebar-section h1 {
  font-size: 34px;
}

.label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.panel-header,
.action-row,
.two-col,
.preset-group,
.tab-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.panel-header {
  justify-content: space-between;
}

.panel-header h2 {
  margin: 0;
  font-size: 18px;
}

.chip {
  padding: 7px 11px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
  background: rgba(217, 119, 6, 0.12);
  border: 1px solid rgba(217, 119, 6, 0.22);
}

.upload-box {
  display: grid;
  place-items: center;
  text-align: center;
  min-height: 168px;
  padding: 22px;
  margin-top: 14px;
  border-radius: 20px;
  border: 1px dashed rgba(217, 119, 6, 0.32);
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
}

.upload-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--amber), var(--copper));
  color: #170f0b;
  font-size: 24px;
  font-weight: 700;
}

.upload-box strong {
  font-size: 18px;
}

.upload-box small {
  color: var(--soft);
  margin-top: 6px;
}

.file-meta {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  display: grid;
  grid-template-columns: 1fr 76px;
  gap: 12px;
}

.file-meta strong {
  display: block;
  margin-top: 4px;
}

label {
  display: block;
  margin-top: 14px;
}

label span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}

input,
textarea,
select {
  width: 100%;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 13px 14px;
  outline: none;
}

textarea {
  resize: vertical;
}

.two-col {
  align-items: stretch;
}

.two-col label {
  flex: 1;
}

.preset-group {
  flex-wrap: wrap;
  margin-top: 16px;
}

.primary-btn,
.ghost-btn,
.mini-btn,
.text-btn,
.tab-btn {
  border: none;
  cursor: pointer;
  transition: 0.22s ease;
  border-radius: 999px;
}

.primary-btn {
  padding: 12px 18px;
  background: linear-gradient(135deg, var(--amber), var(--copper));
  color: #1a120d;
  font-weight: 700;
}

.ghost-btn {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid rgba(217, 119, 6, 0.22);
}

.mini-btn,
.tab-btn {
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.text-btn {
  padding: 0;
  background: transparent;
  color: var(--amber);
}

.primary-btn:hover,
.ghost-btn:hover,
.mini-btn:hover,
.text-btn:hover,
.tab-btn:hover {
  transform: translateY(-1px);
  opacity: 0.94;
}

.workspace {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.banner-card {
  padding: 20px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  align-items: center;
}

.banner-card h2 {
  font-size: clamp(24px, 3vw, 42px);
}

.banner-card img {
  border-radius: 18px;
  min-height: 160px;
  object-fit: cover;
  width: 100%;
}

.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.progress-card,
.overview-card,
.page-report-card,
.materials-card,
.extracted-card {
  padding: 22px;
}

.progress-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.progress-item {
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  opacity: 0.46;
}

.progress-item span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--amber), var(--copper));
  color: #190f0b;
  font-weight: 700;
  margin-bottom: 8px;
}

.progress-item p {
  margin: 0;
  line-height: 1.5;
}

.progress-item.active,
.progress-item.done {
  opacity: 1;
}

.progress-item.active {
  border-color: rgba(217, 119, 6, 0.42);
}

.overview-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.stat-card,
.summary-box,
.page-card,
.preview-card,
.tab-panel {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.stat-card {
  padding: 14px;
}

.stat-card strong {
  display: block;
  margin-top: 6px;
  font-size: 18px;
}

.summary-box,
.tab-panel {
  margin-top: 16px;
  padding: 18px;
}

.summary-box h3 {
  margin: 0 0 10px;
}

.page-report-card,
.materials-card {
  grid-column: span 2;
}

.intro-copy {
  margin: 12px 0 18px;
}

.page-report-list,
.page-preview-list {
  display: grid;
  gap: 14px;
}

.page-card {
  padding: 18px;
  border: 1px solid rgba(217, 119, 6, 0.14);
}

.page-card-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

.page-card-head h3,
.preview-card h3 {
  margin: 0;
  font-size: 18px;
}

.page-card .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.tag {
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(217, 119, 6, 0.1);
  color: var(--muted);
}

.page-card p,
.preview-card p,
.tab-panel p {
  margin: 0;
  line-height: 1.8;
  color: var(--muted);
}

.tab-row {
  margin-top: 16px;
  flex-wrap: wrap;
}

.tab-btn.active {
  color: var(--text);
  background: rgba(217, 119, 6, 0.14);
  border: 1px solid rgba(217, 119, 6, 0.22);
}

.tab-panel {
  display: none;
  min-height: 188px;
}

.tab-panel.active {
  display: block;
}

.preview-card {
  padding: 18px;
}

.preview-card p {
  margin-top: 10px;
}

.empty-state {
  display: grid;
  place-items: center;
  gap: 14px;
  padding: 20px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  text-align: center;
}

.empty-state img {
  width: min(100%, 520px);
  border-radius: 18px;
}

@media (max-width: 1280px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .main-grid,
  .overview-stats,
  .progress-list,
  .banner-card,
  .two-col {
    grid-template-columns: 1fr;
  }

  .page-report-card,
  .materials-card {
    grid-column: span 1;
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 20px, 1540px);
  }

  .action-row,
  .panel-header {
    flex-direction: column;
    align-items: stretch;
  }
}