/* ==========================================================================
   TokenBudget AI — Modern Cyber Sapphire Glass Design System
   Author: Krishna Gupta (https://github.com/KrishnaGupta-coder)
   ========================================================================== */

:root {
  --bg-main: #070a12;
  --bg-card: rgba(15, 21, 35, 0.85);
  --bg-card-hover: rgba(22, 31, 52, 0.95);
  --bg-panel: #0d121f;
  --border-card: rgba(255, 255, 255, 0.07);
  --border-focus: #00e5ff;
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;
  
  --accent-cyan: #00e5ff;
  --accent-emerald: #10b981;
  --accent-violet: #8b5cf6;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(0, 229, 255, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(139, 92, 246, 0.04) 0%, transparent 45%);
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 2rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-height: 100vh;
}

/* ==========================================================================
   Header Navbar
   ========================================================================== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(139, 92, 246, 0.2));
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
}

.brand h1 {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tagline {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.model-selector-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-card);
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.model-selector-pill select {
  background: transparent;
  color: var(--text-main);
  border: none;
  font-size: 0.88rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
}

.model-selector-pill select option {
  background: var(--bg-panel);
  color: var(--text-main);
}

.github-badge-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.github-badge-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   Metrics Strip
   ========================================================================== */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1.1rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  backdrop-filter: blur(12px);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.stat-card:hover {
  border-color: rgba(0, 229, 255, 0.3);
  transform: translateY(-2px);
}

.stat-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.stat-val {
  font-size: 1.65rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-main);
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}

.stat-val small {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-subtle);
}

.stat-val.highlight-green {
  color: var(--accent-emerald);
}

.stat-val.highlight-cyan {
  color: var(--accent-cyan);
}

.stat-sub {
  font-size: 0.78rem;
  color: var(--text-subtle);
  font-family: var(--font-mono);
}

/* ==========================================================================
   Main Content Layout
   ========================================================================== */
.main-content {
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 1080px) {
  .main-content {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  backdrop-filter: blur(16px);
  overflow: hidden;
}

.card-header {
  padding: 1rem 1.4rem;
  border-bottom: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.card-header h3, .card-header h4 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* Tab Group */
.tab-group {
  display: flex;
  gap: 0.4rem;
  background: rgba(0, 0, 0, 0.3);
  padding: 0.3rem;
  border-radius: 9px;
  border: 1px solid var(--border-card);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.tab-btn.active {
  background: rgba(0, 229, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 229, 255, 0.3);
}

.badge-mini {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(0, 229, 255, 0.2));
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: var(--accent-emerald);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.presets-dropdown select {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  padding: 0.45rem 0.8rem;
  border-radius: 8px;
  font-size: 0.8rem;
  outline: none;
  cursor: pointer;
}

.presets-dropdown select option {
  background: var(--bg-panel);
}

/* ==========================================================================
   Editor & Panels
   ========================================================================== */
.view-panel {
  display: flex;
  flex-direction: column;
}

.view-panel.hidden {
  display: none;
}

#promptInput {
  width: 100%;
  height: 380px;
  background: transparent;
  border: none;
  padding: 1.4rem;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  resize: vertical;
  outline: none;
}

#promptInput::placeholder {
  color: var(--text-subtle);
}

.editor-footer {
  padding: 0.9rem 1.4rem;
  border-top: 1px solid var(--border-card);
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.editor-hints {
  font-size: 0.78rem;
  color: var(--text-subtle);
}

.editor-hints code {
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.1);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.btn-group {
  display: flex;
  gap: 0.6rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), #00a8ff);
  color: #070a12;
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-card);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.btn-sm {
  padding: 0.35rem 0.7rem;
  font-size: 0.78rem;
}

.btn-text {
  background: none;
  border: none;
  color: var(--accent-cyan);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-text:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Token Visualizer View
   ========================================================================== */
.token-toolbar {
  padding: 0.8rem 1.4rem;
  border-bottom: 1px solid var(--border-card);
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.token-legend {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.token-stream {
  min-height: 320px;
  max-height: 480px;
  overflow-y: auto;
  padding: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  align-content: flex-start;
  line-height: 1.9;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.token-chip {
  padding: 1px 4px;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  white-space: pre-wrap;
  word-break: break-all;
}

.token-chip:hover {
  border-color: #fff !important;
  transform: scale(1.06);
  z-index: 2;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

/* Alternating Token Hues */
.token-hue-0 { background: rgba(0, 229, 255, 0.2); color: #70f3ff; }
.token-hue-1 { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; }
.token-hue-2 { background: rgba(139, 92, 246, 0.2); color: #c4b5fd; }
.token-hue-3 { background: rgba(245, 158, 11, 0.2); color: #fde68a; }
.token-hue-4 { background: rgba(244, 63, 94, 0.2); color: #fda4af; }

.token-inspector {
  padding: 0.8rem 1.4rem;
  border-top: 1px solid var(--border-card);
  background: rgba(0, 0, 0, 0.3);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  min-height: 42px;
}

.empty-state {
  width: 100%;
  color: var(--text-subtle);
  font-style: italic;
  padding: 2rem 0;
  text-align: center;
}

/* ==========================================================================
   Smart Compressor View
   ========================================================================== */
.compressor-dashboard {
  display: grid;
  grid-template-columns: 1fr auto 1fr 1fr 1fr;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 1.4rem;
  border-bottom: 1px solid var(--border-card);
  background: rgba(0, 0, 0, 0.25);
}

@media (max-width: 768px) {
  .compressor-dashboard {
    grid-template-columns: 1fr 1fr;
  }
}

.compressor-metric-box {
  display: flex;
  flex-direction: column;
}

.comp-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--text-subtle);
  font-weight: 600;
}

.comp-val {
  font-size: 1.35rem;
  font-weight: 800;
  font-family: var(--font-mono);
}

.compressor-arrow {
  color: var(--text-subtle);
  font-size: 1.2rem;
}

.text-green { color: var(--accent-emerald); }
.text-cyan { color: var(--accent-cyan); }

.compression-diff-view {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 1.2rem 1.4rem;
  min-height: 280px;
}

@media (max-width: 800px) {
  .compression-diff-view {
    grid-template-columns: 1fr;
  }
}

.diff-pane {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-card);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
}

.diff-header {
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.token-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
}

.token-tag.highlight {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-emerald);
}

.diff-text {
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 320px;
  overflow-y: auto;
  color: var(--text-muted);
}

.compressor-actions {
  padding: 1rem 1.4rem;
  border-top: 1px solid var(--border-card);
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  gap: 0.8rem;
}

/* ==========================================================================
   Sidebar: Multi-Model Cost Matrix & Context Bar
   ========================================================================== */
.matrix-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.65rem 1.4rem;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--border-card);
}

.filter-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-pill:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
}

.filter-pill.active {
  background: rgba(0, 229, 255, 0.15);
  border-color: rgba(0, 229, 255, 0.4);
  color: var(--accent-cyan);
}

.cost-table-wrapper {
  overflow-x: auto;
}

.cost-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.cost-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  color: var(--text-subtle);
  font-weight: 600;
  border-bottom: 1px solid var(--border-card);
  background: rgba(0, 0, 0, 0.15);
}

.cost-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.cost-table tr.selected {
  background: rgba(0, 229, 255, 0.08);
}

.cost-table tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

.model-name-cell {
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.model-tag {
  font-size: 0.7rem;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

.font-mono {
  font-family: var(--font-mono);
}

/* Simulator Slider */
.simulator-box {
  padding: 1.2rem 1.4rem;
  border-bottom: 1px solid var(--border-card);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sim-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.sim-val b {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

.custom-range {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.1);
  outline: none;
  cursor: pointer;
  accent-color: var(--accent-cyan);
}

.sim-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-subtle);
  font-family: var(--font-mono);
}

/* Context Utilization Card */
.context-card {
  padding: 1.2rem 1.4rem;
  border-bottom: 1px solid var(--border-card);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.badge-subtle {
  font-size: 0.72rem;
  color: var(--text-subtle);
  font-family: var(--font-mono);
}

.context-bar-wrap {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
}

.context-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-emerald));
  border-radius: 4px;
  transition: width 0.3s ease;
}

.context-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Audit Snippet */
.audit-card {
  padding: 1.2rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.audit-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.audit-snippet {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.5;
  color: var(--text-muted);
  max-height: 140px;
  overflow-y: auto;
  white-space: pre-wrap;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  margin-top: auto;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-subtle);
  padding: 1rem 0;
  border-top: 1px solid var(--border-card);
}

.footer a {
  color: var(--accent-cyan);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}