/* ===== CSS Variables ===== */
:root,
[data-theme="dark"] {
  --bg: #0d1117;
  --bg-card: rgba(22, 27, 34, 0.9);
  --bg-elevated: rgba(30, 36, 46, 0.95);
  --border: rgba(255, 255, 255, 0.08);
  --text: #e6edf3;
  --text-secondary: #8b949e;
  --blue: #4a9eff;
  --blue-bg: rgba(74, 158, 255, 0.12);
  --orange: #f59e0b;
  --green: #3fb950;
  --purple: #a78bfa;
  --purple-bg: rgba(167, 139, 250, 0.12);
  --red: #f85149;
  --red-bg: rgba(248, 81, 73, 0.12);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --hover: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --radius-sm: 8px;
}

[data-theme="light"] {
  --bg: #f6f8fa;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-elevated: rgba(255, 255, 255, 0.98);
  --border: rgba(0, 0, 0, 0.08);
  --text: #1f2328;
  --text-secondary: #656d76;
  --blue: #0969da;
  --blue-bg: rgba(9, 105, 218, 0.08);
  --orange: #d97706;
  --green: #1a7f37;
  --purple: #8250df;
  --purple-bg: rgba(130, 80, 223, 0.08);
  --red: #cf222e;
  --red-bg: rgba(207, 34, 46, 0.08);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --hover: rgba(0, 0, 0, 0.04);
}

[data-theme="pink"] {
  --bg: #fef5f8;
  --bg-card: rgba(255, 250, 252, 0.9);
  --bg-elevated: rgba(255, 245, 248, 0.98);
  --border: rgba(220, 130, 160, 0.15);
  --text: #3d1a28;
  --text-secondary: #8b6070;
  --blue: #d04070;
  --blue-bg: rgba(208, 64, 112, 0.08);
  --orange: #e07850;
  --green: #408850;
  --purple: #a060b0;
  --purple-bg: rgba(160, 96, 176, 0.08);
  --red: #d03050;
  --red-bg: rgba(208, 48, 80, 0.08);
  --shadow: 0 4px 20px rgba(180, 80, 120, 0.08);
  --hover: rgba(200, 100, 140, 0.06);
}

[data-theme="blue"] {
  --bg: #f0f6fd;
  --bg-card: rgba(248, 252, 255, 0.9);
  --bg-elevated: rgba(240, 248, 255, 0.98);
  --border: rgba(80, 140, 210, 0.12);
  --text: #152838;
  --text-secondary: #507090;
  --blue: #2070c0;
  --blue-bg: rgba(32, 112, 192, 0.08);
  --orange: #e08830;
  --green: #308050;
  --purple: #5060c0;
  --purple-bg: rgba(80, 96, 192, 0.08);
  --red: #c04050;
  --red-bg: rgba(192, 64, 80, 0.08);
  --shadow: 0 4px 20px rgba(40, 80, 160, 0.08);
  --hover: rgba(60, 120, 200, 0.06);
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}
[data-theme="dark"] body { background: linear-gradient(135deg, #0d1117 0%, #161b22 50%, #0d1117 100%); }
[data-theme="light"] body { background: linear-gradient(135deg, #f6f8fa 0%, #e8ecf0 50%, #f6f8fa 100%); }
[data-theme="pink"] body { background: linear-gradient(135deg, #fef5f8 0%, #fce8f0 50%, #fef5f8 100%); }
[data-theme="blue"] body { background: linear-gradient(135deg, #f0f6fd 0%, #e0ecf8 50%, #f0f6fd 100%); }

/* ===== Background Decoration ===== */
.bg-decoration { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.bg-circle { position: absolute; border-radius: 50%; filter: blur(120px); opacity: 0.15; }
.bg-circle-1 { width: 500px; height: 500px; background: var(--blue); top: -150px; left: -100px; }
.bg-circle-2 { width: 400px; height: 400px; background: var(--purple); bottom: -100px; right: -80px; }

/* ===== Tab Navigation ===== */
.tab-nav {
  display: flex; align-items: center; gap: 24px;
  margin: 6vh auto 0;
  padding: 0 16px; height: 52px;
  width: calc(100% - 40px);
  max-width: 920px;
  background: rgba(22, 27, 34, 0.7);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  flex-shrink: 0;
}
[data-theme="light"] .tab-nav { background: rgba(255, 255, 255, 0.6); border-color: rgba(0, 0, 0, 0.06); }
[data-theme="pink"] .tab-nav { background: rgba(255, 250, 252, 0.6); border-color: rgba(220, 130, 160, 0.12); }
[data-theme="blue"] .tab-nav { background: rgba(248, 252, 255, 0.6); border-color: rgba(80, 140, 210, 0.10); }

.tab-brand { display: flex; align-items: center; gap: 8px; }
.logo-icon { width: 22px; height: 22px; color: var(--blue); }
.brand-name { font-weight: 700; font-size: 15px; white-space: nowrap; }

.tab-links { display: flex; gap: 4px; flex: 1; }
.tab-link {
  padding: 8px 18px;
  border: none; border-radius: 6px;
  background: transparent; color: var(--text-secondary);
  font-size: 14px; cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}
.tab-link:hover { background: var(--hover); color: var(--text); }
.tab-link.active { background: var(--blue-bg); color: var(--blue); font-weight: 600; }

.tab-actions { display: flex; gap: 8px; align-items: center; }

/* ===== Icon Button ===== */
.icon-btn {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border: none; border-radius: 6px;
  background: transparent; color: var(--text-secondary);
  cursor: pointer; transition: all 0.2s;
}
.icon-btn:hover { background: var(--hover); color: var(--text); }

/* ===== Tab Content ===== */
.tab-content { display: none; position: relative; z-index: 1; }
.tab-content.active { display: block; }

/* ===== Dashboard ===== */
.dashboard {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 20px;
  max-width: 960px;
  margin: 0 auto;
}

.charts-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 0 20px 20px;
  max-width: 960px;
  margin: 0 auto;
}

/* ===== Cards ===== */
.card {
  background: rgba(22, 27, 34, 0.65);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
[data-theme="light"] .card { background: rgba(255, 255, 255, 0.55); border-color: rgba(0, 0, 0, 0.06); }
[data-theme="pink"] .card { background: rgba(255, 250, 252, 0.55); border-color: rgba(220, 130, 160, 0.12); }
[data-theme="blue"] .card { background: rgba(248, 252, 255, 0.55); border-color: rgba(80, 140, 210, 0.10); }

/* ===== Overview ===== */
.overview-section { display: flex; gap: 16px; margin-bottom: 20px; }
.overview-item { flex: 1; text-align: center; }
.overview-label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; }
.overview-value { display: block; font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.overview-badge { font-size: 11px; padding: 2px 8px; border-radius: 10px; }
.value-blue { color: var(--blue); }
.value-orange { color: var(--orange); }
.badge-green { background: rgba(63, 185, 80, 0.15); color: var(--green); }
.badge-gray { background: rgba(139, 148, 158, 0.12); color: var(--text-secondary); }

/* ===== Models ===== */
.model-row {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.model-row:last-child { border-bottom: none; }
.model-info { display: flex; justify-content: space-between; margin-bottom: 4px; }
.model-name { font-size: 13px; font-weight: 600; }
.model-cost { font-size: 13px; color: var(--orange); }
.model-detail { font-size: 11px; color: var(--text-secondary); }
.model-rate { font-size: 11px; color: var(--text-secondary); margin-top: 4px; text-align: right; }

.progress-bar-wrap {
  height: 6px; background: var(--hover); border-radius: 3px;
  margin: 6px 0; overflow: hidden; position: relative;
}
.progress-bar-fill { height: 100%; border-radius: 3px; transition: width 0.4s; }
.progress-bar-blue { background: linear-gradient(90deg, var(--blue), #7cb8ff); }
.progress-bar-purple { background: linear-gradient(90deg, var(--purple), #c4b5fd); }

.progress-tooltip {
  position: absolute; bottom: 120%; left: 50%; transform: translateX(-50%);
  background: rgba(22, 27, 34, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--text);
  font-size: 11px; padding: 6px 12px; border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.10); white-space: nowrap; opacity: 0; pointer-events: none;
  transition: opacity 0.2s; line-height: 1.6;
}
.progress-bar-wrap:hover .progress-tooltip { opacity: 1; }

/* ===== Stats Row ===== */
.stats-row { display: flex; gap: 16px; margin-bottom: 20px; }
.stat-item { flex: 1; text-align: center; }
.stat-label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.stat-value { display: block; font-size: 21px; font-weight: 700; margin-bottom: 2px; }
.stat-sub { font-size: 11px; color: var(--text-secondary); }

/* ===== Charts ===== */
.chart-section { position: relative; }
.chart-header-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.chart-toggle-btn { flex-shrink: 0; }
.chart-title { font-size: 14px; font-weight: 600; }
.chart-wrap { height: 224px; width: 100%; min-width: 0; }
.chart-wrap-sm { height: 176px; width: 100%; min-width: 0; }
.chart-wrap canvas, .chart-wrap-sm canvas { width: 100% !important; height: 100% !important; }
.chart-total { text-align: center; font-size: 13px; color: var(--text-secondary); margin-top: 10px; }

/* ===== Divider ===== */
.divider { height: 1px; background: var(--border); margin: 16px 0; }

/* ===== Upload Page ===== */
.upload-page {
  max-width: 520px;
  margin: 0 auto;
  padding: 20px;
  display: flex; flex-direction: column; gap: 16px;
}

.upload-card { }
.section-title { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.section-desc { font-size: 13px; color: var(--text-secondary); margin-bottom: 12px; }

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-secondary);
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--blue); background: var(--blue-bg); color: var(--blue);
}
.upload-text { font-size: 15px; margin-top: 10px; }
.upload-hint { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }
.upload-status { margin-top: 10px; font-size: 13px; }
.upload-status.success { color: var(--green); }
.upload-status.error { color: var(--red); }

/* Scan row */
.scan-row { display: flex; align-items: center; gap: 12px; }
.scan-path { flex: 1; font-size: 13px; color: var(--text-secondary); padding: 8px 12px; background: var(--hover); border-radius: 6px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ===== Settings Page ===== */
.settings-page {
  max-width: 450px;
  margin: 0 auto;
  padding: 20px;
}

.settings-card { }

/* ===== Forms ===== */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="date"] {
  width: 100%;
  padding: 10px 14px;
  background: var(--hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}
.form-group input:focus { outline: none; border-color: var(--blue); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.input-with-btn { display: flex; gap: 8px; }
.input-with-btn input { flex: 1; }

.toggle-row { display: flex; align-items: center; justify-content: space-between; cursor: pointer; }
.toggle-row > span { font-size: 14px; color: var(--text); }

/* Toggle Switch */
.toggle-switch { position: relative; display: inline-block; cursor: pointer; }
.toggle-switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle-track {
  display: block; width: 44px; height: 24px;
  background: var(--border); border-radius: 12px;
  transition: background 0.2s; position: relative;
}
.toggle-dot {
  position: absolute; top: 2px; left: 2px;
  width: 20px; height: 20px; background: white; border-radius: 50%;
  transition: transform 0.2s;
}
.toggle-switch input:checked + .toggle-track { background: var(--blue); }
.toggle-switch input:checked + .toggle-track .toggle-dot { transform: translateX(20px); }

/* Theme Chips */
.theme-options { display: flex; gap: 8px; flex-wrap: wrap; }
.theme-chip {
  padding: 6px 16px; border: 1px solid var(--border); border-radius: 16px;
  background: transparent; color: var(--text-secondary);
  font-size: 13px; cursor: pointer;
  transition: all 0.2s; font-family: inherit;
}
.theme-chip:hover { border-color: var(--blue); color: var(--text); }
.theme-chip.active { background: var(--blue); border-color: var(--blue); color: #fff; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; border: none; border-radius: var(--radius-sm);
  font-size: 14px; font-family: inherit; cursor: pointer;
  transition: all 0.2s; white-space: nowrap;
  text-decoration: none;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { filter: brightness(1.15); }
.btn-secondary { background: var(--hover); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--blue); }
.btn-danger { background: var(--red-bg); color: var(--red); border: 1px solid transparent; }
.btn-danger:hover { border-color: var(--red); }
.btn-sm { padding: 6px 12px; font-size: 13px; }

.btn-row { display: flex; gap: 10px; }

.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border); }

/* ===== Auto Refresh Bar ===== */
.auto-refresh-bar {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); z-index: 200;
  display: flex; align-items: center; gap: 8px;
  padding: 7px 16px;
  background: rgba(22, 27, 34, 0.7);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.10); border-radius: 20px;
  font-size: 12px; color: var(--text-secondary);
  box-shadow: var(--shadow);
}
[data-theme="light"] .auto-refresh-bar { background: rgba(255, 255, 255, 0.6); border-color: rgba(0, 0, 0, 0.06); }
[data-theme="pink"] .auto-refresh-bar { background: rgba(255, 250, 252, 0.6); border-color: rgba(220, 130, 160, 0.12); }
[data-theme="blue"] .auto-refresh-bar { background: rgba(248, 252, 255, 0.6); border-color: rgba(80, 140, 210, 0.10); }
.auto-refresh-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }

/* ===== Toast ===== */
.toast {
  position: fixed; top: 24px; left: 50%; transform: translateX(-50%); z-index: 300;
  padding: 10px 24px;
  background: rgba(22, 27, 34, 0.75);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.10); border-radius: 20px;
  font-size: 13px; color: var(--text);
  box-shadow: var(--shadow);
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
}
[data-theme="light"] .toast { background: rgba(255, 255, 255, 0.65); border-color: rgba(0, 0, 0, 0.06); }
[data-theme="pink"] .toast { background: rgba(255, 250, 252, 0.65); border-color: rgba(220, 130, 160, 0.12); }
[data-theme="blue"] .toast { background: rgba(248, 252, 255, 0.65); border-color: rgba(80, 140, 210, 0.10); }
.toast.show { opacity: 1; }
.toast.warning { border-color: var(--orange); color: var(--orange); }

/* ===== Confirm Dialog ===== */
.confirm-overlay {
  position: fixed; inset: 0; z-index: 400;
  background: rgba(0, 0, 0, 0.5);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
.confirm-overlay.show { opacity: 1; pointer-events: auto; }

.confirm-dialog {
  background: rgba(22, 27, 34, 0.8);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius);
  padding: 28px;
  max-width: 400px;
  width: 90%;
  box-shadow: var(--shadow);
  text-align: center;
}
[data-theme="light"] .confirm-dialog { background: rgba(255, 255, 255, 0.7); border-color: rgba(0, 0, 0, 0.06); }
[data-theme="pink"] .confirm-dialog { background: rgba(255, 250, 252, 0.7); border-color: rgba(220, 130, 160, 0.12); }
[data-theme="blue"] .confirm-dialog { background: rgba(248, 252, 255, 0.7); border-color: rgba(80, 140, 210, 0.10); }
.confirm-msg { font-size: 15px; color: var(--text); margin-bottom: 20px; line-height: 1.6; }
.confirm-actions { display: flex; gap: 12px; justify-content: center; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .dashboard, .charts-row { grid-template-columns: 1fr; max-width: 100%; }
  .tab-nav {
    margin: 3vh 12px 0;
    padding: 0 12px; gap: 12px;
    width: calc(100% - 24px);
    max-width: 100%;
    border-radius: var(--radius-sm);
  }
  .brand-name { display: none; }
  .tab-link { padding: 8px 12px; font-size: 13px; }
  .upload-page { max-width: 100%; padding: 12px; }
  .settings-page { max-width: 100%; padding: 12px; }
}

@media (max-width: 600px) {
  .tab-nav {
    flex-wrap: wrap;
    height: auto;
    padding: 8px 12px;
    gap: 6px;
  }
  .tab-links { order: 3; width: 100%; justify-content: center; }
  .tab-actions { order: 2; }
  .tab-link { padding: 6px 10px; font-size: 12px; }
  .logo-icon { width: 18px; height: 18px; }
  .brand-name { font-size: 13px; }
  .dashboard, .charts-row { padding: 8px; gap: 10px; }
  .card { padding: 14px; }
  .chart-wrap { height: 180px; }
  .chart-wrap-sm { height: 150px; }
  .overview-value { font-size: 20px; }
  .stat-value { font-size: 18px; }
  .overview-section { gap: 10px; }
  .stats-row { gap: 10px; }
}

@media (max-width: 400px) {
  .tab-nav { margin: 8px 8px 0; padding: 6px 10px; }
  .overview-section { flex-direction: column; gap: 12px; }
  .stats-row { flex-direction: column; gap: 12px; }
  .form-row { grid-template-columns: 1fr; }
  .dashboard, .charts-row { padding: 6px; gap: 8px; }
  .card { padding: 12px; }
  .chart-wrap { height: 160px; }
  .chart-wrap-sm { height: 130px; }
  .upload-zone { padding: 24px 16px; }
  .upload-text { font-size: 13px; }
  .btn { padding: 8px 16px; font-size: 13px; }
  .scan-row { flex-direction: column; align-items: stretch; }
  .form-actions { flex-direction: column; }
  .form-actions .btn { width: 100%; }
  .confirm-dialog { padding: 20px; }
}