/* ==========================================================================
   CinePulse GraphQL Learning Portal - Production Grade UI (60-30-10)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&display=swap');

:root {
  /* Dark Theme Tokens */
  --bg-color: #0f172a;
  --bg-card: #1e293b;
  --border-color: #334155;
  --border-hover: #475569;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-primary: #ef4444;
  --accent-primary-hover: #dc2626;
  --accent-secondary: #3b82f6;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;

  --editor-bg: #0b0f19;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --font-sans: 'Figtree', system-ui, -apple-system, sans-serif;
  --font-mono: 'Fira Code', monospace;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

[data-theme="light"] {
  /* Light Theme Tokens */
  --bg-color: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;

  --accent-primary: #ef4444;
  --accent-primary-hover: #dc2626;
  --accent-secondary: #2563eb;
  --accent-success: #059669;
  --accent-warning: #d97706;

  --editor-bg: #f1f5f9;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

/* ==========================================================================
   Base Styles & Reset
   ========================================================================== */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-color); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.app-container {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.navbar {
  margin-top: 1.25rem;
  padding: 0 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 1.25rem;
  z-index: 100;
  height: 70px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
}

.badge-tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.15rem 0.5rem;
  background: rgba(239, 68, 68, 0.1);
  color: var(--accent-primary);
  border-radius: var(--radius-full);
  margin-left: 0.5rem;
}

/* Nav Menu Tabs */
.nav-menu {
  display: flex;
  align-items: center;
  height: 100%;
}

.nav-tab {
  height: 100%;
  padding: 0 1.25rem;
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-muted);
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 3px solid transparent;
  transition: all var(--transition-fast);
}

.nav-tab:hover {
  color: var(--text-main);
}

.nav-tab.active {
  color: var(--accent-primary);
  border-bottom: 3px solid var(--accent-primary);
  font-weight: 500;
}

/* Controls */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-control {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all var(--transition-fast);
}

.btn-control:hover {
  border-color: var(--border-hover);
  background: var(--bg-color);
}

.lang-flag { display: inline-block; }

/* Status Bar */
.status-bar {
  margin-top: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-success);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--accent-success);
}

/* ==========================================================================
   Main Content & Views
   ========================================================================== */
.main-content {
  flex: 1;
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.view-section { display: none; animation: fadeIn 0.3s ease; }
.view-section.active { display: block; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ==========================================================================
   Hero Section (Overview)
   ========================================================================== */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 900px) {
  .hero-section { grid-template-columns: 1fr; }
}

.hero-left {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.hero-title-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.hero-title-wrap h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-main);
}

.hero-version {
  padding: 0.2rem 0.6rem;
  background: rgba(239, 68, 68, 0.1);
  color: var(--accent-primary);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 800px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.hero-badge {
  padding: 0.3rem 0.75rem;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.hero-badge i { color: var(--accent-success); }

.base-url-box {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.base-url-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-right: 0.5rem;
  white-space: nowrap;
}

.base-url-text {
  font-family: var(--font-mono);
  color: var(--accent-primary);
  font-weight: 400;
  font-size: 0.95rem;
  flex: 1;
  word-break: break-all;
}

/* Stats Grid & Build Card */
.hero-right {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.build-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.build-card h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
}

.build-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-tab {
  font-size: 0.85rem;
  color: var(--text-main);
  background: var(--bg-card);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
  flex: 1 1 calc(20% - 1rem);
  min-width: 160px;
}

.project-tab:hover {
  background: var(--bg-color);
  border-color: var(--accent-primary);
}

.project-tab strong {
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.15rem;
}

.project-tab span {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.api-key-input {
  width: 100%;
  padding: 0.6rem 1rem;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  transition: border-color var(--transition-fast);
}

.api-key-input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

/* ==========================================================================
   Interactive Console
   ========================================================================== */
.console-wrapper {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 900px) {
  .console-wrapper { grid-template-columns: 1fr; }
}

.console-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.sidebar-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
}

.preset-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.preset-btn {
  text-align: left;
  padding: 0.75rem 1rem;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.preset-btn:hover {
  border-color: var(--accent-primary);
  background: rgba(239, 68, 68, 0.05);
  color: var(--accent-primary);
}

/* Main Console Area */
.console-main {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.console-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-color);
}

.console-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.btn-primary {
  padding: 0.5rem 1.25rem;
  background: var(--accent-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  transition: background var(--transition-fast);
}

.btn-primary:hover { background: var(--accent-primary-hover); }
.btn-primary:active { transform: scale(0.97); }

.btn-secondary {
  padding: 0.4rem 1rem;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}
.btn-secondary:hover { border-color: var(--border-hover); }
.btn-secondary:active { transform: scale(0.97); }
.snippet-tab.active {
  background: var(--bg-card);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.console-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 500px;
}

@media (max-width: 800px) {
  .console-split { grid-template-columns: 1fr; }
}

.editor-pane {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-color);
}

.editor-label {
  padding: 0.5rem 1rem;
  background: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
}
.editor-pane .editor-label:first-child { border-top: none; }

.editor-textarea {
  flex: 1;
  background: var(--editor-bg);
  border: none;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 1rem;
  resize: none;
  outline: none;
}

.variables-textarea {
  height: 120px;
  background: var(--editor-bg);
  border: none;
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 1rem;
  resize: none;
  outline: none;
}

.response-pane {
  display: flex;
  flex-direction: column;
  background: var(--editor-bg);
}

.response-header {
  padding: 0.5rem 1rem;
  background: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.response-status {
  display: flex;
  gap: 0.5rem;
}

.status-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: var(--accent-success); }
.badge-error { background: rgba(239, 68, 68, 0.15); color: var(--accent-primary); }

.code-output {
  flex: 1;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
  white-space: pre;
  overflow: auto;
  color: var(--text-main);
  margin: 0;
}

.json-key { color: var(--accent-secondary); font-weight: 500; }
.json-string { color: var(--accent-success); }
.json-number { color: var(--accent-warning); }
.json-boolean { color: var(--accent-primary); font-weight: 600; }
.json-null { color: var(--text-dim); font-style: italic; }

/* ==========================================================================
   Learn Portal Views (Modules)
   ========================================================================== */
.learn-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 992px) {
  .learn-container { grid-template-columns: 1fr; }
}

.learn-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.learn-sidebar-header {
  padding: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-color);
}

.learn-sidebar-header h4 {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
}

.progress-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
}

.module-nav-list {
  display: flex;
  flex-direction: column;
}

.module-item-btn {
  text-align: left;
  padding: 1rem 1.25rem;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: all var(--transition-fast);
}

.module-item-btn:last-child { border-bottom: none; }
.module-item-btn:hover { background: var(--bg-color); color: var(--text-main); }

.module-item-btn.active {
  background: rgba(239, 68, 68, 0.05);
  color: var(--accent-primary);
  border-left: 4px solid var(--accent-primary);
  font-weight: 500;
  padding-left: calc(1.25rem - 4px);
}

.module-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  min-width: 24px;
  min-height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--border-color);
  color: var(--text-main);
  font-size: 0.75rem;
  font-weight: 600;
}

.module-item-btn.active .module-num {
  background: var(--accent-primary);
  color: #fff;
}

.module-item-btn.completed .module-num {
  background: var(--accent-success);
  color: #fff;
}

/* Learn Main Content */
.learn-main {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.learn-header {
  padding: 2rem 2rem 0;
  border-bottom: 1px solid var(--border-color);
}

.learn-mod-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
}

.learn-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.learn-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* Learn Tabs */
.learn-tabs {
  display: flex;
  gap: 1.5rem;
}

.learn-tab-btn {
  padding: 0.75rem 0;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.learn-tab-btn:hover { color: var(--text-main); }
.learn-tab-btn.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.learn-tab-content {
  display: none;
  padding: 2rem;
  animation: fadeIn 0.2s ease;
}
.learn-tab-content.active { display: block; }

/* Theory Content Docs Styling */
.theory-content {
  font-size: 1rem;
  color: var(--text-main);
  line-height: 1.7;
}
.theory-content h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-top: 1rem;
  margin-bottom: 0.75rem;
}
.theory-content h4 {
  font-size: 1.15rem;
  font-weight: 500;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}
.theory-content p { 
  margin-bottom: 1.25rem; 
}
.theory-content ul {
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
}
.theory-content li {
  margin-bottom: 0.5rem;
}
.theory-content pre {
  background: var(--editor-bg);
  padding: 1rem;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-color);
}
.theory-content code {
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.85rem;
  color: var(--text-main);
}
.theory-content p code, .theory-content li code {
  background: var(--editor-bg);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  color: var(--accent-primary);
}

/* Exercise Content */
.exercise-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.challenge-instruction {
  margin-bottom: 1.5rem;
  color: var(--text-main);
}

.challenge-editor {
  width: 100%;
  height: 200px;
  background: var(--editor-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  padding: 1rem;
  margin-bottom: 1rem;
  resize: vertical;
}

.challenge-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.result-feedback {
  padding: 1rem;
  border-radius: var(--radius-sm);
  font-weight: 400;
  display: none;
}
.result-feedback.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-success);
}
.result-feedback.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--accent-primary);
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem 1.5rem;
  margin-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
}
.footer-author-link {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-fast);
}
.footer-author-link:hover {
  color: var(--accent-primary-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.tech-pill {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin: 0.25rem;
  font-size: 0.75rem;
}

/* Mobile Responsiveness tweaks */
@media (max-width: 768px) {
  .app-container {
    padding: 0 0.5rem;
  }
  
  .navbar {
    height: auto;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1rem;
    gap: 1rem;
    text-align: center;
  }
  
  .nav-brand {
    order: 1;
    justify-content: center;
    width: 100%;
  }
  
  .nav-controls {
    order: 2;
    justify-content: center;
    width: 100%;
  }
  
  .nav-menu {
    order: 3;
    width: 100%;
    justify-content: center;
  }
  
  .status-bar {
    height: auto;
    flex-direction: column;
    padding: 0.75rem;
    gap: 0.5rem;
    text-align: center;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn-primary, .hero-actions .btn-secondary {
    width: 100%;
    text-align: center;
  }
  
  .module-item-btn {
    padding: 0.75rem;
  }
  
  .module-num {
    width: 20px;
    height: 20px;
    min-width: 20px;
    min-height: 20px;
  }

  .console-header {
    padding: 0.75rem 1rem;
    gap: 0.75rem;
  }

  .console-header h3 {
    font-size: 0.95rem;
  }
}

/* Extra Small Devices (phones, 576px and down) */
@media (max-width: 576px) {
  .hero-title-wrap h1 {
    font-size: 1.5rem;
  }
  
  .hero-title-wrap {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .hero-desc {
    font-size: 0.95rem;
  }
  
  .brand-title {
    font-size: 1.1rem;
  }
  
  .badge-tag {
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
  }
  
  .base-url-box {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .base-url-box #copyBaseUrlBtn {
    align-self: flex-end;
    margin-top: 0.5rem;
  }
  
  .nav-tab {
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
  }
  
  .editor-actions {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .editor-actions button {
    flex: 1 1 100%;
  }
  
  .console-header {
    padding: 0.6rem 0.75rem;
    gap: 0.5rem;
  }

  .console-header h3 {
    font-size: 0.88rem;
    line-height: 1.25;
  }

  .console-header .btn-primary,
  #btnExecuteQuery,
  #btnSendToConsole {
    font-size: 0.78rem;
    padding: 0.35rem 0.65rem;
    white-space: nowrap;
    flex-shrink: 0;
  }
  
  .challenge-actions {
    flex-direction: column;
  }
  
  .challenge-actions button {
    width: 100%;
  }
}

/* ==========================================================================
   Schema Explorer & Documentation View Styles
   ========================================================================== */

.schema-hero {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.schema-badge-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.schema-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.schema-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 720px;
  line-height: 1.5;
}

.schema-toolbar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.schema-search-box {
  position: relative;
  width: 100%;
}

.schema-search-box .search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  color: var(--text-dim);
  pointer-events: none;
}

.schema-search-input {
  width: 100%;
  padding: 0.85rem 2.5rem 0.85rem 2.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.schema-search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.btn-clear-search {
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0.25rem 0.4rem;
  border-radius: var(--radius-sm);
}

.btn-clear-search:hover {
  color: var(--text-main);
  background: var(--bg-color);
}

.schema-filter-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-chip {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-chip:hover {
  border-color: var(--border-hover);
  color: var(--text-main);
}

.filter-chip.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.schema-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
}

@media (max-width: 640px) {
  .schema-grid {
    grid-template-columns: 1fr;
  }
}

.schema-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.schema-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.schema-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

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

.schema-cat-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-cat-query {
  background: rgba(99, 102, 241, 0.15);
  color: #6366f1;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.badge-cat-mutation {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-cat-object {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-cat-input {
  background: rgba(6, 182, 212, 0.15);
  color: #06b6d4;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.schema-item-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  font-family: var(--font-mono);
}

.schema-return-badge {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-secondary);
  background: var(--bg-color);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.schema-item-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin-bottom: 1rem;
}

.schema-section {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border-color);
}

.schema-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.schema-fields-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.schema-field-row {
  background: var(--bg-color);
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.schema-field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.schema-field-name {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
}

.schema-type-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-primary);
}

.schema-field-desc {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
  line-height: 1.35;
}

.schema-card-actions {
  margin-top: auto;
  padding-top: 1rem;
}

.btn-try-schema {
  width: 100%;
  background: var(--bg-color);
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

.btn-try-schema:hover {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

.schema-empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1.5rem;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
}