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

:root {
  --bg: #0d0f1a;
  --sidebar: #121524;
  --card: #1a1e2e;
  --card-hover: #232840;
  --border: #2a2f45;
  --text: #e4e6ef;
  --text-dim: #8b8fa3;
  --pink: #fb7299;
  --pink-dim: #e85a80;
  --blue: #00a1d6;
  --blue-dim: #0090c0;
  --green: #02c340;
  --orange: #ff8e3c;
  --red: #ff4d4f;
  --purple: #7c3aed;
}

body {
  font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

#app {
  display: flex;
  height: 100vh;
  width: 100vw;
}

/* SIDEBAR */
.sidebar {
  width: 220px;
  background: var(--sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 16px;
  border-bottom: 1px solid var(--border);
}

.logo-icon { flex-shrink: 0; }

.logo-title {
  font-size: 18px;
  font-weight: 900;
  color: var(--pink);
}

.logo-sub {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 2px;
}

.nav {
  flex: 1;
  padding: 12px 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  cursor: pointer;
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: var(--card-hover);
  color: var(--text);
}

.nav-item.active {
  background: var(--card);
  color: var(--pink);
  border-left-color: var(--pink);
}

.nav-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

.sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-dim);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* MAIN */
.main {
  flex: 1;
  overflow-y: auto;
  padding: 24px 32px;
}

.main::-webkit-scrollbar { width: 6px; }
.main::-webkit-scrollbar-track { background: var(--bg); }
.main::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.page { animation: fadeIn 0.3s; }

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

.page-header {
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: 28px;
  font-weight: 900;
  color: var(--text);
}

.page-desc {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* STAT CARDS */
.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card);
  border-radius: 12px;
  padding: 20px;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: 12px 12px 0 0;
}

.stat-card.pink::before { background: linear-gradient(90deg, var(--pink), #ff6b9d); }
.stat-card.blue::before { background: linear-gradient(90deg, var(--blue), #4dd0e1); }
.stat-card.green::before { background: linear-gradient(90deg, var(--green), #4caf50); }
.stat-card.orange::before { background: linear-gradient(90deg, var(--orange), #ffb74d); }
.stat-card.gray::before { background: linear-gradient(90deg, #757575, #9e9e9e); }
.stat-card.red::before { background: linear-gradient(90deg, var(--red), #ff7043); }

.stat-label {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 32px;
  font-weight: 900;
  color: var(--text);
  line-height: 1.2;
}

.stat-trend {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 6px;
}

/* CHARTS */
.chart-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.chart-card {
  background: var(--card);
  border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.chart-card.large { margin-bottom: 16px; }

.chart-title {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.chart-body {
  height: 320px;
  padding: 12px;
}

.chart-body.tall { height: 420px; }

/* FILTER BAR */
.filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.filter-bar button {
  padding: 8px 20px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-dim);
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
  transition: all 0.2s;
}

.filter-bar button:hover {
  border-color: var(--pink);
  color: var(--text);
}

.filter-bar button.active {
  background: var(--pink);
  border-color: var(--pink);
  color: #fff;
  font-weight: 700;
}

/* TABLE */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table thead {
  background: var(--bg);
}

.data-table th {
  padding: 12px 16px;
  text-align: left;
  color: var(--text-dim);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.data-table td {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  color: var(--text);
}

.data-table tr:hover td {
  background: var(--card-hover);
}

.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--border);
  font-weight: 700;
  font-size: 13px;
  color: var(--text-dim);
}

.rank-badge.top3 {
  background: linear-gradient(135deg, var(--orange), #ffb74d);
  color: #fff;
}

.cat-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 4px;
  background: rgba(0, 161, 214, 0.15);
  color: var(--blue);
  font-size: 12px;
  font-weight: 500;
}

.level-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(251, 114, 153, 0.15);
  color: var(--pink);
  font-size: 11px;
  font-weight: 700;
}

.up-name {
  font-weight: 700;
  color: var(--pink) !important;
}

/* TOP VIDEOS */
.top-videos {
  padding: 8px 16px;
  max-height: 320px;
  overflow-y: auto;
}

.video-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.video-item:last-child { border: none; }

.video-rank {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: var(--border);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-dim);
  flex-shrink: 0;
}

.video-rank.top3 {
  background: linear-gradient(135deg, var(--orange), #ffb74d);
  color: #fff;
}

.video-info { flex: 1; min-width: 0; }

.video-title-row {
  font-size: 13px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.video-meta {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

.video-plays {
  font-size: 14px;
  font-weight: 700;
  color: var(--pink);
  flex-shrink: 0;
}

/* DANMAKU LIST */
.danmaku-list {
  padding: 12px 20px;
  max-height: 400px;
  overflow-y: auto;
}

.danmaku-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.danmaku-item:last-child { border: none; }

.danmaku-tag {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

.danmaku-item.sent-positive .danmaku-tag {
  background: rgba(2, 195, 64, 0.2);
  color: var(--green);
}

.danmaku-item.sent-negative .danmaku-tag {
  background: rgba(255, 77, 79, 0.2);
  color: var(--red);
}

.danmaku-item.sent-neutral .danmaku-tag {
  background: rgba(139, 143, 163, 0.2);
  color: var(--text-dim);
}

.danmaku-text {
  color: var(--text);
  font-weight: 500;
}

.danmaku-source {
  color: var(--text-dim);
  font-size: 11px;
  margin-left: auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}

/* SEARCH PAGE */
.search-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.search-input {
  flex: 1;
  padding: 12px 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.search-input::placeholder { color: var(--text-dim); }

.search-input:focus {
  border-color: var(--pink);
  box-shadow: 0 0 0 3px rgba(251, 114, 153, 0.1);
}

.search-btn {
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--pink), #ff6b9d);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s;
}

.search-btn:hover { opacity: 0.9; transform: translateY(-1px); }

.search-btn.reset {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.search-result-header {
  padding: 12px 0;
  font-size: 14px;
  color: var(--text-dim);
}

.search-result-header b { color: var(--pink); font-size: 16px; }
.no-result { color: var(--red); }

.bv-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 4px;
  background: rgba(251, 114, 153, 0.15);
  color: var(--pink);
  font-size: 12px;
  font-weight: 700;
  font-family: monospace;
  white-space: nowrap;
}

.video-title-cell {
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
  text-align: center;
}

.hint-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.search-hint p {
  color: var(--text-dim);
  font-size: 16px;
  margin-bottom: 24px;
}

.hot-searches {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.hot-searches span { color: var(--text-dim); font-size: 13px; }

.hot-tag {
  padding: 6px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--blue);
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s;
}

.hot-tag:hover {
  border-color: var(--pink);
  color: var(--pink);
}

/* FOOTER */
.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: center;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  background: var(--sidebar);
  z-index: 100;
}

.footer a {
  color: var(--text-dim);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s;
}

.footer a:hover { color: var(--blue); }

.main { padding-bottom: 60px; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .chart-row { grid-template-columns: 1fr; }
  .sidebar { width: 60px; }
  .logo-text, .nav span:not(.nav-icon), .sidebar-footer span { display: none; }
}