/* ==========================================================================
   Mansplainer — Design System & Stylesheet
   Aesthetic: High-tech Minimalist Terminal meets Ivy League Typography
   ========================================================================== */

:root {
  --bg-main: #0c0f17;
  --bg-surface: #141926;
  --bg-surface-elevated: #1a2234;
  --bg-surface-subtle: #111520;
  --border-subtle: #242f47;
  --border-focus: #4f87ff;
  --border-caveman: #e67e22;
  --border-mit: #9b51e0;
  
  --text-primary: #f0f4fc;
  --text-secondary: #9aa8c2;
  --text-muted: #5e6f8d;
  
  --accent-blue: #3b82f6;
  --accent-blue-glow: rgba(59, 130, 246, 0.25);
  --accent-amber: #f59e0b;
  --accent-purple: #a855f7;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'Fira Code', ui-monospace, monospace;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 24px rgba(59, 130, 246, 0.2);
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Top Level Container */
.app-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  flex: 1;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon-wrap {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.brand-emoji {
  font-size: 1.5rem;
  letter-spacing: -2px;
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, #f0f4fc 30%, #9aa8c2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.brand-tagline em {
  color: var(--accent-blue);
  font-style: normal;
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pricing-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  font-size: 0.75rem;
}

.badge-pill {
  font-weight: 700;
  color: var(--accent-amber);
  letter-spacing: 0.03em;
}

.badge-cost {
  font-family: var(--font-mono);
  color: #fff;
  font-weight: 600;
}

/* Generic Card */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

/* Control Bar */
.control-bar {
  padding: 1rem 1.25rem;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 1.25rem;
  align-items: center;
}

@media (max-width: 860px) {
  .control-bar {
    grid-template-columns: 1fr;
  }
}

.control-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  display: block;
}

.mode-switcher-container {
  display: flex;
  flex-direction: column;
}

.mode-pill-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg-main);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  gap: 0.25rem;
}

.mode-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.mode-btn:hover {
  color: var(--text-primary);
  background: var(--bg-surface-elevated);
}

.mode-btn.active {
  background: var(--bg-surface-elevated);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-focus);
}

.level-switcher-container {
  display: flex;
  flex-direction: column;
  margin-top: 1rem;
}

.level-btn {
  background: var(--bg-main);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  justify-content: center;
}

.level-btn:hover {
  color: var(--text-primary);
  background: var(--bg-surface-elevated);
  border-color: var(--border-focus);
}

.level-btn.active {
  background: var(--bg-surface-elevated);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-focus);
}

.model-selector-container {
  display: flex;
  flex-direction: column;
}

.model-header-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}

.micro-badge {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.1);
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.select-wrapper {
  display: flex;
  gap: 0.5rem;
}

.styled-select {
  flex: 1;
  background: var(--bg-main);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
}

.styled-select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--accent-blue-glow);
}

.styled-select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Presets */
.presets-bar { display: flex; align-items: center; gap: 0.4rem; overflow-x: auto; padding-bottom: 0.2rem; margin-bottom: 0.75rem; }

.presets-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}

.preset-chips {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.chip {
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.chip:hover {
  color: var(--text-primary);
  border-color: var(--border-focus);
  background: var(--bg-surface-elevated);
}

/* Panes Grid */
.panes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

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

.pane {
  display: flex;
  flex-direction: column;
  height: 320px;
}

.pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.pane-title-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.pane-tag {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background: rgba(230, 126, 34, 0.15);
  color: #f39c12;
  border: 1px solid rgba(230, 126, 34, 0.3);
}

.pane-tag.mit-tag {
  background: rgba(168, 85, 247, 0.15);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.pane-tag.eight-grade-tag {
  background: rgba(59, 130, 246, 0.15);
  color: #93c5fd;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.pane-hint {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.pane-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.char-counter {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.textarea-wrapper {
  position: relative;
  flex: 1;
  display: flex;
}

.styled-textarea {
  width: 100%;
  height: 100%;
  background: var(--bg-main);
  border: none;
  padding: 1rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  line-height: 1.6;
  resize: none;
  outline: none;
}

.styled-textarea::placeholder {
  color: var(--text-muted);
}

.output-box {
  width: 100%;
  height: 100%;
  background: var(--bg-main);
  padding: 1rem;
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  line-height: 1.6;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
  user-select: text;
}

.output-box .placeholder-text {
  color: var(--text-muted);
  font-style: italic;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(12, 15, 23, 0.88);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  z-index: 10;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(59, 130, 246, 0.2);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.pane-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface-subtle);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.input-meta {
  font-size: 0.72rem;
  color: var(--text-muted);
}

kbd {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.telemetry {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 60%;
}

.dot-sep {
  opacity: 0.4;
}

/* Badges & Floating Prompts */
.copy-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: #10b981;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  animation: popIn 0.2s ease-out;
}

@keyframes popIn {
  0% { transform: scale(0.8); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.floating-notification {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(30, 41, 59, 0.95);
  color: #38bdf8;
  border: 1px solid #0284c7;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  box-shadow: var(--shadow-md);
  pointer-events: none;
  z-index: 5;
  animation: floatFade 1.6s ease forwards;
}

@keyframes floatFade {
  0% { opacity: 0; transform: translate(-50%, 8px); }
  15% { opacity: 1; transform: translate(-50%, 0); }
  85% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, -8px); }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #60a5fa, #3b82f6);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.5);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: #242f47;
  border-color: var(--border-focus);
}

.btn-subtle {
  background: var(--bg-surface-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn-subtle:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn-outline:hover {
  color: var(--text-primary);
  background: var(--bg-surface-elevated);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: none;
}

.btn-ghost:hover {
  color: var(--text-primary);
}

.btn-danger-soft {
  color: #f87171;
}

.btn-danger-soft:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: #ef4444;
}

.btn-xs {
  padding: 0.2rem 0.5rem;
  font-size: 0.72rem;
  border-radius: var(--radius-sm);
}

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

.icon-btn {
  background: var(--bg-main);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  transition: var(--transition);
}

.icon-btn:hover {
  border-color: var(--border-focus);
  color: #fff;
}

/* Status Indicators */
.key-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.dot-pending {
  background-color: var(--accent-amber);
  box-shadow: 0 0 6px var(--accent-amber);
}

.dot-connected {
  background-color: var(--accent-green);
  box-shadow: 0 0 6px var(--accent-green);
}

/* Error Banner */
.error-banner {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.error-icon {
  font-size: 1.25rem;
}

.error-content {
  flex: 1;
}

.error-content strong {
  color: #fca5a5;
  font-size: 0.85rem;
  display: block;
}

.error-content p {
  color: #fecaca;
  font-size: 0.8rem;
  margin-top: 0.15rem;
}

/* Test Suite Panel */
.test-suite-panel { padding: 0.75rem 1.25rem; margin-top: -0.5rem; }

.test-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.test-panel-header.compact .test-title h3 {
  font-size: 0.85rem;
  font-weight: 600;
}

.test-panel-header.compact .test-title {
  margin: 0;
}

.test-title h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.test-title p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.test-results-log {
  margin-top: 1rem;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.75rem;
}

.test-summary-bar {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--bg-main);
  margin-bottom: 0.75rem;
}

.test-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-height: 220px;
  overflow-y: auto;
}

.test-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  padding: 0.4rem 0.6rem;
  background: var(--bg-surface-subtle);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.test-item.pass { border-left: 3px solid var(--accent-green); }
.test-item.fail { border-left: 3px solid var(--accent-red); background: rgba(239, 68, 68, 0.08); }

.test-badge {
  font-size: 0.7rem;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.test-badge.pass { color: var(--accent-green); }
.test-badge.fail { color: var(--accent-red); }

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(7, 9, 15, 0.8);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99;
  padding: 1rem;
}

.modal-card {
  width: 100%;
  max-width: 480px;
  background: var(--bg-surface-elevated);
  box-shadow: var(--shadow-glow);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.modal-body {
  padding: 1.25rem;
}

.modal-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.input-group {
  display: flex;
  gap: 0.5rem;
}

.styled-input {
  flex: 1;
  background: var(--bg-main);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  outline: none;
}

.styled-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--accent-blue-glow);
}

.helper-text {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.helper-text a {
  color: var(--accent-blue);
  text-decoration: none;
}

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

.modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* Footer */
.app-footer { text-align: center; font-size: 0.75rem; color: var(--text-muted); padding-top: 0.25rem; margin-top: -0.25rem; }

/* Utility hidden */
.hidden {
  display: none !important;
}