/* ── Reset & Base ─────────────────────────────────────────────── */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Geist',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#0d1117;color:#e6edf3;line-height:1.6;min-height:100vh;display:flex;position:relative}
body::before{content:'';position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(99,102,241,.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 70%, rgba(88,166,255,.10) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 50% 40%, rgba(168,85,247,.08) 0%, transparent 55%),
    radial-gradient(ellipse 70% 70% at 10% 80%, rgba(59,130,246,.06) 0%, transparent 50%),
    radial-gradient(ellipse 40% 50% at 90% 20%, rgba(20,184,166,.05) 0%, transparent 50%)}
a{color:#58a6ff;text-decoration:none}
code{font-family:'Geist Mono','SF Mono',SFMono-Regular,Consolas,'Liberation Mono',Menlo,monospace;font-size:12px;background:#1c2129;padding:2px 6px;border-radius:4px}

/* ── Fullscreen Button ───────────────────────────────────────── */
.fullscreen-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 20px;
  background: transparent;
  border: 1px solid #30363d;
  border-radius: 8px;
  color: #8b949e;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  margin-bottom: 12px;
}
.fullscreen-btn:hover {
  background: #21262d;
  color: #e6edf3;
  border-color: #484f58;
}
.fullscreen-btn i {
  font-size: 14px;
  width: 18px;
  text-align: center;
}
.fullscreen-btn:active {
  transform: scale(0.98);
}
.live-status {
  font-size: 12px;
  color: #6e7681;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ── Sidebar (REMOVED) ───────────────────────────────────────── */

/* ── Main Content ────────────────────────────────────────────── */
.main{margin-left:0;flex:1;min-height:100vh;position:relative;z-index:1}
.content{max-width:100%;margin:0 auto;padding:16px 20px}
.tab-panel{display:none}
.tab-panel.active{display:block}

/* ── Header bar ──────────────────────────────────────────────── */
.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.log-container + .page-header{margin-top:32px}
.page-header h2{font-size:24px;font-weight:700;color:#ffffff;letter-spacing:-0.02em}
.header-actions{display:flex;gap:8px;align-items:center}
.live-dot{width:8px;height:8px;background:#3fb950;border-radius:50%;display:inline-block;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* ── Stat Cards ──────────────────────────────────────────────── */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(90px,1fr));gap:8px;margin-bottom:24px;align-items:stretch}
.stat-card{background:rgba(22,27,34,.50);border:1px solid rgba(255,255,255,.06);border-radius:10px;padding:8px 12px 10px;display:flex;flex-direction:column;align-items:center;min-height:56px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.stat-card .label{font-size:9px;color:#7d8590;text-transform:uppercase;letter-spacing:0.04em;font-weight:500;line-height:1.2;width:100%;text-align:center;margin-bottom:2px}
.stat-card .value{font-size:17px;font-weight:800;color:#ffffff;line-height:1.2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%;flex:1;display:flex;align-items:center;justify-content:center}

/* ── Tables ──────────────────────────────────────────────────── */
table{width:100%;border-collapse:collapse;background:rgba(22,27,34,.55);border:1px solid rgba(255,255,255,.06);border-radius:12px;overflow:hidden;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid rgba(255,255,255,.05);font-size:13px;line-height:1.5}
th{background:rgba(28,33,41,.70);color:#7d8590;font-weight:600;text-transform:uppercase;font-size:11px;letter-spacing:0.05em}
tr:last-child td{border-bottom:none}
tr:hover{background:rgba(255,255,255,.03)}

/* ── Tags ────────────────────────────────────────────────────── */
.tag{display:inline-block;padding:3px 10px;border-radius:6px;font-size:11px;font-weight:600;white-space:nowrap;letter-spacing:0.01em}
.tag-sm{padding:2px 8px;border-radius:4px;font-size:10px;font-weight:600}
.tag-green{background:#0d2818;color:#3fb950;border:1px solid #23863640}
.tag-red{background:#3d0e0e;color:#f85149;border:1px solid #f8514940}
.tag-yellow{background:#3d2e00;color:#d29922;border:1px solid #d2992240}
.tag-blue{background:#0d1d35;color:#58a6ff;border:1px solid #58a6ff40}
.tag-gray{background:#21262d;color:#8b949e;border:1px solid #30363d}
.providers-cell{display:flex;flex-wrap:wrap;gap:6px}

/* ── Provider Cards ──────────────────────────────────────────── */
.provider-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.provider-card{background:rgba(22,27,34,.50);border:1px solid rgba(255,255,255,.06);border-radius:12px;padding:20px;transition:border-color .15s;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.provider-card:hover{border-color:#30363d}
.provider-card .card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.provider-card .card-header h3{font-size:15px;font-weight:600;color:#f0f6fc}
.provider-card .card-meta{font-size:12px;color:#7d8590;line-height:1.8}
.status-dot{width:10px;height:10px;border-radius:50%;display:inline-block}
.status-dot.ok{background:#3fb950;box-shadow:0 0 0 2px #3fb95030}
.status-dot.warn{background:#d29922;box-shadow:0 0 0 2px #d2992230}
.status-dot.off{background:#484f58;box-shadow:0 0 0 2px #484f5830}
.status-dot.err{background:#f85149;box-shadow:0 0 0 2px #f8514930}

/* ── Keys Management ─────────────────────────────────────────── */
.key-form{background:rgba(22,27,34,.50);border:1px solid rgba(255,255,255,.06);border-radius:12px;padding:24px;margin-bottom:24px;display:flex;gap:12px;flex-wrap:wrap;align-items:end;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:12px;color:#7d8590;font-weight:500;letter-spacing:0.02em}
.form-group select,.form-group input[type="text"],.form-group input[type="password"]{background:#0d1117;border:1px solid #30363d;color:#e6edf3;padding:10px 14px;border-radius:8px;font-size:14px;min-width:180px;line-height:1.5}
.form-group select:focus,.form-group input:focus{outline:none;border-color:#58a6ff;box-shadow:0 0 0 3px #58a6ff20}
.btn{padding:10px 18px;border-radius:8px;border:1px solid #30363d;cursor:pointer;font-size:14px;font-weight:500;transition:all .15s;line-height:1.4}
.btn-primary{background:#1f6feb;color:#fff;border-color:#1f6feb}
.btn-primary:hover{background:#388bfd}
.btn-danger{background:transparent;color:#f85149;border-color:#f8514940}
.btn-danger:hover{background:#3d0e0e}
.btn-sm{padding:6px 12px;font-size:12px}
.key-row{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.04)}
.key-row:last-child{border-bottom:none}
.key-row .key-val{font-family:'Geist Mono','SF Mono',SFMono-Regular,Consolas,'Liberation Mono',Menlo,monospace;font-size:13px;color:#8b949e;flex:1}
.key-row .key-status{display:flex;align-items:center;gap:6px;font-size:12px}
.key-group{background:rgba(22,27,34,.50);border:1px solid rgba(255,255,255,.06);border-radius:12px;overflow:hidden;margin-bottom:16px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.key-group-header{padding:14px 16px;background:rgba(28,33,41,.70);display:flex;align-items:center;justify-content:space-between}
.key-group-header h3{font-size:15px;font-weight:600;color:#f0f6fc}

/* ── Usage Charts ────────────────────────────────────────────── */
.chart-container{background:rgba(22,27,34,.35);border:1px solid rgba(255,255,255,.06);border-radius:12px;padding:24px;margin-bottom:20px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.chart-container h3{font-size:15px;font-weight:600;color:#f0f6fc;margin-bottom:18px}
.bar-chart{display:flex;align-items:flex-end;gap:6px;height:120px;padding-top:8px}
.bar-chart .bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px}
.bar-chart .bar{width:100%;border-radius:4px 4px 0 0;min-height:2px;transition:height .3s}
.bar-chart .bar-label{font-size:10px;color:#7d8590;transform:rotate(-45deg);white-space:nowrap}
.bar-chart .bar-value{font-size:10px;color:#7d8590;font-variant-numeric:tabular-nums}

/* ── Logs ────────────────────────────────────────────────────── */
.log-ok{color:#3fb950}
.log-fail{color:#f85149}
.log-container{background:rgba(22,27,34,.50);border:1px solid rgba(255,255,255,.06);border-radius:12px;overflow:hidden;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.log-table-wrap{max-height:600px;overflow-y:auto}
.log-filters{padding:14px 16px;background:rgba(28,33,41,.70);display:flex;gap:12px;align-items:center;border-bottom:1px solid rgba(255,255,255,.04)}
.log-filters select{background:#0d1117;border:1px solid #30363d;color:#e6edf3;padding:8px 12px;border-radius:8px;font-size:13px}

/* ── Buttons ─────────────────────────────────────────────────── */
.refresh-btn{background:#21262d;border:1px solid #30363d;color:#e6edf3;padding:8px 16px;border-radius:8px;cursor:pointer;font-size:13px;font-weight:500}
.refresh-btn:hover{background:#30363d}

/* ── Empty State ─────────────────────────────────────────────── */
.empty{text-align:center;padding:48px;color:#7d8590;font-size:14px}

/* ── Mobile hamburger ────────────────────────────────────────── */
/* removed — no sidebar */

/* ── Responsive ──────────────────────────────────────────────── */
@media(max-width:768px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .provider-grid{grid-template-columns:1fr}
  .key-form{flex-direction:column}
  .form-group select,.form-group input{min-width:100%}
  table{font-size:12px}
  th,td{padding:8px 10px}
  .bar-chart .bar-label{display:none}
}

/* ── Stat extras ──────────────────────────────────────────────── */
.stat-card .sub{font-size:12px;color:#8b949e;line-height:1.2}
.stat-card .savings{color:#3fb950}
.stat-card-fs{cursor:pointer;user-select:none}
.stat-card-fs:hover{border-color:#58a6ff}
.stat-card-brand{grid-column:span 2;background:none;border:none;backdrop-filter:none;-webkit-backdrop-filter:none}
.stat-card-brand .label{font-size:12px;font-weight:700;color:#58a6ff}
.stat-card-brand .value{font-size:22px;color:#ffffff;white-space:normal;word-break:break-word}
.stat-card-nav{cursor:pointer;user-select:none;transition:all .15s}
.stat-card-nav:hover{border-color:#58a6ff;background:#1a2130}
.back-btn{display:block;width:50%;margin:0 0 16px 0;padding:10px 16px;background:#1a4d1a;color:#3fb950;border:1px solid #2e7d32;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;text-align:left;transition:all .15s}
.back-btn:hover{background:#1f5c1f}
.back-btn i{margin-right:8px}

/* ── Modal overlay ──────────────────────────────────────────── */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;z-index:1000}
.modal{background:rgba(22,27,34,.65) !important;border:1px solid rgba(255,255,255,.08) !important;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}
.mini-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px;margin-bottom:16px}

/* ── Setup Tab ─────────────────────────────────────────────────── */
.setup-info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-bottom:24px}
.setup-info-card{background:rgba(22,27,34,.50);border:1px solid rgba(255,255,255,.06);border-radius:12px;padding:20px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.setup-label{font-size:11px;color:#7d8590;text-transform:uppercase;letter-spacing:0.06em;font-weight:500;margin-bottom:10px}
.setup-value-row{display:flex;align-items:center;gap:8px}
.setup-value-row code{flex:1;font-size:13px;background:#0d1117;padding:8px 12px;border-radius:6px;display:block;word-break:break-all}
.setup-key-input{flex:1;background:#0d1117;border:1px solid #30363d;color:#e6edf3;padding:8px 12px;border-radius:6px;font-family:'Geist Mono','SF Mono',SFMono-Regular,Consolas,'Liberation Mono',Menlo,monospace;font-size:13px}
.setup-section-title{font-size:18px;font-weight:600;color:#f0f6fc;margin:28px 0 16px}
.snippet-card{background:rgba(22,27,34,.50);border:1px solid rgba(255,255,255,.06);border-radius:12px;margin-bottom:16px;overflow:hidden;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.snippet-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:rgba(28,33,41,.70);border-bottom:1px solid rgba(255,255,255,.04);font-size:13px;color:#7d8590;font-weight:600}
.snippet-code{padding:16px;margin:0;overflow-x:auto;font-size:12px;line-height:1.6;background:#0d1117}
.snippet-code code{background:none;padding:0}
.btn-copy{background:#21262d;border-color:#30363d;color:#58a6ff}
.btn-copy:hover{background:#30363d}
.setup-model-list{display:flex;flex-wrap:wrap;gap:8px}
.key-source{display:flex;align-items:center;margin-right:4px}

/* ── Medal Badges ──────────────────────────────────────────────── */
.medal{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;font-size:14px;font-weight:700;color:#fff}
.medal-gold{background:linear-gradient(135deg,#ffd700,#ffb800);box-shadow:0 0 8px #ffd70080,0 2px 4px #00000040}
.medal-silver{background:linear-gradient(135deg,#c0c0c0,#a0a0a0);box-shadow:0 0 8px #c0c0c080,0 2px 4px #00000040}
.medal-bronze{background:linear-gradient(135deg,#cd7f32,#a0522d);box-shadow:0 0 8px #cd7f3280,0 2px 4px #00000040}

/* ── Model Changes (Models tab) ───────────────────────────────────────────── */
.changes-header{display:flex;align-items:center;gap:12px;margin:8px 0}
.changes-header h3{margin:0;font-size:16px;font-weight:600;color:#f0f6fc}
.changes-last{font-size:11px;color:#7d8590}
.btn-add-model{background:#0d2818;color:#3fb950;border:1px solid #238636;border-radius:6px;padding:6px 14px;font-size:12px;font-weight:500;cursor:pointer;transition:all .15s}
.btn-add-model:hover{background:#1b3a26;color:#56d364}
.btn-remove-model{background:#3d0e0e;color:#f85149;border:1px solid #da3633;border-radius:6px;padding:6px 14px;font-size:12px;font-weight:500;cursor:pointer;transition:all .15s}
.btn-remove-model:hover{background:#5a1a1a;color:#ff6b62}
.btn-test-model{background:#161b22;color:#8b949e;border:1px solid #30363d;border-radius:6px;padding:6px 14px;font-size:12px;font-weight:500;cursor:pointer;transition:all .15s}
.btn-test-model:hover{background:#1c2128;color:#c9d1d9;border-color:#8b949e}
.btn-test-model:disabled{opacity:.5;cursor:default}
#model-changes-table td{vertical-align:middle;padding:8px 12px}
.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;vertical-align:middle}
.dot-green{background:#3fb950;box-shadow:0 0 6px #3fb95080}
.dot-red{background:#f85149;box-shadow:0 0 6px #f8514980}

/* ── Toasty Toast Customization ───────────────────────────────────────────── */
#toastyBox {
  bottom: 20px !important;
  right: 20px !important;
  top: auto !important;
  left: auto !important;
  transform: none !important;
}
.toasty {
  background: #161b22 !important;
  border: 1px solid #30363d !important;
  border-radius: 8px !important;
  color: #c9d1d9 !important;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5) !important;
  padding: 14px 18px !important;
  -webkit-animation: toasty-in-bottom 0.3s ease-out both !important;
  animation: toasty-in-bottom 0.3s ease-out both !important;
}
.toasty-title {
  color: #58a6ff !important;
  font-weight: 600 !important;
  font-size: 14px !important;
}
.toasty-text {
  color: #c9d1d9 !important;
  font-size: 13px !important;
}
.toasty-close {
  color: #8b949e !important;
}
.toasty-close:hover {
  color: #f0f6fc !important;
}
.icon-container i {
  color: #58a6ff !important;
}

/* ═══════════════════════════════════════════════════════════════════════════ */
/* 🎨 UI POLISH — Based on better-ui / better-accessibility / better-layout   */
/* ═══════════════════════════════════════════════════════════════════════════ */

/* ── 1. Focus Rings (better-accessibility) ──────────────────────────────── */
:focus-visible {
  outline: 2px solid #58a6ff;
  outline-offset: 2px;
  border-radius: 4px;
}
/* Remove outline for mouse users, keep for keyboard */
:focus:not(:focus-visible) {
  outline: none;
}

/* ── 2. Smooth Transitions (better-ui) ───────────────────────────────────── */
.nav-item,
.btn,
.refresh-btn,
.btn-add-model,
.btn-remove-model,
.btn-test-model,
.btn-copy,
.provider-card,
tr {
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}
/* Specific property transitions (never use 'transition: all') */
.btn,
.refresh-btn {
  transition-property: transform, background-color, border-color, color;
  transition-duration: 0.15s;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── 3. Button Press Feedback (better-ui: Scale on Press) ────────────────── */
.btn:active,
.refresh-btn:active,
.btn-add-model:active,
.btn-remove-model:active,
.btn-test-model:active,
.btn-copy:active {
  transform: scale(0.96);
}
/* Disable press animation when button is disabled */
.btn:disabled,
.btn-test-model:disabled {
  transform: none;
  cursor: not-allowed;
}

/* ── 4. Card Shadows for Elevation (better-ui: Shadows for Elevation) ────── */
.stat-card {
  box-shadow:
    0 1px 2px rgba(0,0,0,0.1),
    0 1px 3px rgba(0,0,0,0.06);
  transition: box-shadow 0.2s ease, border-color 0.15s ease;
}
.stat-card:hover {
  box-shadow:
    0 4px 6px rgba(0,0,0,0.1),
    0 2px 4px rgba(0,0,0,0.06);
  border-color: #30363d;
}
.provider-card {
  box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}
.provider-card:hover {
  box-shadow: 0 4px 8px rgba(0,0,0,0.12);
}

/* ── 5. Tabular Numbers (better-typography) ──────────────────────────────── */
.stat-card .value,
.bar-value,
td[class*="tokens"],
td[class*="count"] {
  font-variant-numeric: tabular-nums;
}

/* ── 6. Reduced Motion (better-accessibility) ────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .live-dot {
    animation: none !important;
    opacity: 1 !important;
  }
}

/* ── 7. Skip Link (REMOVED) ─────────────────────────────────── */

/* ── 8. Hit Areas for Icon Buttons ──────────────────────────── */
.toasty-close {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ── 9. Loading State Pulse (better-ui: Motion Restraint) ────────────────── */
@keyframes gentle-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
.loading-pulse {
  animation: gentle-pulse 1.5s ease-in-out infinite;
}

/* ── 10. Smooth Fade In for Tab Panels ──────────────────────────────────── */
.tab-panel.active {
  animation: fadeIn 0.2s ease-out;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── 11. Enhanced Tag Styles ─────────────────────────────────────────────── */
.tag {
  transition: transform 0.1s ease, opacity 0.1s ease;
}
.tag:hover {
  transform: scale(1.05);
  opacity: 0.9;
}

/* ── 12. Concentric Border Radius (better-ui) ────────────────────────────── */
/* Inner elements in cards should have smaller radius */
.provider-card .tag,
.stat-card .tag,
.key-group .btn-sm {
  border-radius: 4px;
}

/* ── 13. Enhanced Hover States ───────────────────────────────────────────── */
.nav-item:hover {
  transform: translateX(2px);
}
.key-row:hover {
  background: rgba(28, 33, 45, 0.5);
}

/* ── 14. Status Colors with Redundant Cues (better-accessibility) ────────── */
/* Status dots already have color + position; ensure text also conveys meaning */
.status-dot.ok::after { content: ''; }
.status-dot.warn::after { content: ''; }
.status-dot.err::after { content: ''; }

/* ── 15. Custom Scrollbar ────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: #0d1117;
}
::-webkit-scrollbar-thumb {
  background: #30363d;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #484f58;
}

/* ── 16. Toast Entry Animation (better-ui: Contextual Icon Animations) ───── */
@-webkit-keyframes toasty-in-bottom {
  0% {
    -webkit-transform: translateY(30px);
    transform: translateY(30px);
    opacity: 0;
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes toasty-in-bottom {
  0% {
    -webkit-transform: translateY(30px);
    transform: translateY(30px);
    opacity: 0;
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    opacity: 1;
  }
}
.toasty-out-top {
  -webkit-animation: toasty-out-bottom 0.4s ease-in-out both !important;
  animation: toasty-out-bottom 0.4s ease-in-out both !important;
}
@-webkit-keyframes toasty-out-bottom {
  0% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    -webkit-transform: translateY(30px);
    transform: translateY(30px);
    opacity: 0;
  }
}
@keyframes toasty-out-bottom {
  0% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    -webkit-transform: translateY(30px);
    transform: translateY(30px);
    opacity: 0;
  }
}

/* ── 17. Live Dot Enhanced Animation ─────────────────────────────────────── */
.live-dot {
  position: relative;
}
.live-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: rgba(63, 185, 80, 0.3);
  animation: ripple 2s infinite;
}
@keyframes ripple {
  0% { transform: scale(1); opacity: 0.5; }
  100% { transform: scale(2); opacity: 0; }
}

/* ── 18. Screen Reader Only (Accessibility) ──────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── 19. Tab Panel Roles (Accessibility) ─────────────────────────────────── */
.tab-panel[role="tabpanel"] {
  /* Styles for tab panels with ARIA role */
}

/* ── 20. Enhanced Focus for Interactive Elements ─────────────────────────── */
.nav-item:focus-visible,
.form-group select:focus-visible,
.form-group input:focus-visible {
  outline: 2px solid #58a6ff;
  outline-offset: 2px;
}

/* ── 21. Button Disabled State ───────────────────────────────────────────── */
.btn:disabled,
.btn-test-model:disabled,
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ── 22. Smooth Scroll ───────────────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
}

/* ── 23. Selection Color ─────────────────────────────────────────────────── */
::selection {
  background: rgba(88, 166, 255, 0.3);
  color: #f0f6fc;
}

/* ── Timeline Chart ──────────────────────────────────────────────────────── */
.timeline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}
.timeline-header h3 {
  font-size: 15px;
  font-weight: 600;
  color: #f0f6fc;
  margin: 0;
}
.interval-selector {
  display: flex;
  gap: 4px;
  background: #0d1117;
  border-radius: 8px;
  padding: 3px;
}
.interval-btn {
  padding: 6px 14px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: #8b949e;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}
.interval-btn:hover {
  color: #e6edf3;
  background: #21262d;
}
.interval-btn.active {
  color: #ffffff;
  background: #1f6feb;
}
.timeline-chart-wrapper {
  position: relative;
  height: 280px;
}

/* ── 24. Error Doughnut Charts ───────────────────────────────────────────── */
.error-charts-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.error-chart-card {
  background: rgba(22,27,34,.35);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 12px;
  padding: 16px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.error-chart-card h3 {
  font-size: 13px;
  font-weight: 600;
  color: #7d8590;
  margin-bottom: 12px;
  text-align: center;
}
.chart-wrapper {
  position: relative;
  height: 180px;
  display: flex;
  justify-content: center;
}
.chart-empty {
  color: #6e7681;
  font-size: 12px;
  text-align: center;
  padding: 60px 20px;
}
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  justify-content: center;
  padding: 8px 0 0;
  border-top: 1px solid #21262d;
  margin-top: 8px;
}
.chart-legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  max-width: 100%;
}
.chart-legend-color {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}
.chart-legend-label {
  color: #8b949e;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 120px;
}
.chart-legend-value {
  color: #e6edf3;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.chart-legend-percent {
  color: #6e7681;
  font-size: 10px;
}