/* ==========================================================================
   Docker & Kubernetes Production Mastery - Components Stylesheet
   Modals, Tabs, Code Syntax, Cheatsheets, Quiz & Web Terminal Lab
   ========================================================================== */

/* --------------------------------------------------------------------------
   Modal Window & Backdrop
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 10, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 1100px;
  height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 0, 0, 0.8);
  overflow: hidden;
  transform: scale(0.96) translateY(15px);
  transition: transform var(--transition-smooth);
}

.modal-backdrop.open .modal-container {
  transform: scale(1) translateY(0);
}

/* Modal Header */
.modal-header {
  padding: 1.25rem 1.75rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.modal-header-info {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.modal-day-pill {
  font-family: 'Fira Code', monospace;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-sm);
  background: var(--brand-color);
  color: #FFFFFF;
}

.modal-lecture-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-primary);
  background: var(--accent-rose);
  border-color: var(--accent-rose);
}

/* Modal Tabs Navigation */
.modal-tabs-bar {
  display: flex;
  align-items: center;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 1rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.modal-tabs-bar::-webkit-scrollbar {
  display: none;
}

.modal-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.86rem;
  padding: 0.9rem 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.modal-tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.modal-tab-btn.active {
  color: var(--brand-color);
  border-bottom-color: var(--brand-color);
}

/* Modal Body / Panes */
.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 2rem;
  background: var(--bg-secondary);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.25s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Modal Footer */
.modal-footer {
  padding: 1rem 1.75rem;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-footer-nav {
  display: flex;
  gap: 0.75rem;
}

.modal-nav-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  transition: all var(--transition-fast);
}

.modal-nav-btn:hover:not(:disabled) {
  border-color: var(--brand-color);
  background: var(--bg-tertiary);
}

.modal-nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.mark-complete-btn {
  background: transparent;
  border: 1px solid var(--accent-emerald);
  color: var(--accent-emerald);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  transition: all var(--transition-fast);
}

.mark-complete-btn:hover,
.mark-complete-btn.active {
  background: var(--accent-emerald);
  color: #FFFFFF;
}

/* --------------------------------------------------------------------------
   Content Elements & Typography
   -------------------------------------------------------------------------- */
.content-section {
  margin-bottom: 2rem;
}

.content-heading {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.callout-box {
  background: rgba(50, 108, 229, 0.08);
  border-left: 4px solid var(--brand-color);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

.callout-box.hinglish-box {
  background: rgba(245, 158, 11, 0.08);
  border-left-color: var(--accent-amber);
}

.callout-box.arabic-box {
  background: rgba(16, 185, 129, 0.08);
  border-left-color: var(--accent-emerald);
  direction: rtl;
  text-align: right;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.callout-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.key-concepts-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.key-concepts-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.key-concepts-list li i {
  color: var(--accent-cyan);
  margin-top: 0.25rem;
}

/* Code Blocks & Copy Button */
.code-block-wrapper {
  position: relative;
  background: #090D16;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin: 1.25rem 0;
  overflow: hidden;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: #0F1626;
  border-bottom: 1px solid var(--border-subtle);
}

.code-lang-badge {
  font-family: 'Fira Code', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.copy-code-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition-fast);
}

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

.code-block-wrapper pre {
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  font-family: 'Fira Code', monospace;
  font-size: 0.88rem;
  line-height: 1.6;
  color: #E2E8F0;
}

/* Mermaid Container */
.mermaid-container {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 1.5rem 0;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: auto;
}

/* Tables */
.data-table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.data-table th {
  background: var(--bg-elevated);
  color: var(--accent-cyan);
  padding: 0.9rem 1.2rem;
  font-weight: 700;
  border-bottom: 1px solid var(--border-card);
}

.data-table td {
  padding: 0.85rem 1.2rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Accordion (Interview Q&A) */
.qa-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin: 1.5rem 0;
}

.qa-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.qa-question {
  padding: 1.1rem 1.35rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.qa-question:hover {
  background: rgba(255, 255, 255, 0.02);
}

.qa-icon {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.qa-card.open .qa-icon {
  transform: rotate(180deg);
}

.qa-answer {
  display: none;
  padding: 1rem 1.35rem;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.qa-card.open .qa-answer {
  display: block;
}

/* --------------------------------------------------------------------------
   Interactive Web Terminal Lab
   -------------------------------------------------------------------------- */
.terminal-view-container {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.5rem;
  margin: 2rem 0 4rem;
  min-height: 650px;
}

.terminal-scenarios-sidebar {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.scenarios-sidebar-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
}

.scenarios-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  overflow-y: auto;
  max-height: 520px;
}

.scenario-btn {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.scenario-btn:hover {
  border-color: var(--brand-color);
  background: var(--bg-elevated);
}

.scenario-btn.active {
  border-color: #10B981;
  background: rgba(16, 185, 129, 0.12);
}

.scenario-btn-title {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.scenario-btn-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.35;
}

/* Terminal Console Box */
.terminal-console-box {
  background: #0A0D14;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.7);
  overflow: hidden;
}

.terminal-top-bar {
  background: #131A29;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.terminal-traffic-lights {
  display: flex;
  gap: 0.45rem;
}

.traffic-light {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.traffic-light.red { background: #FF5F56; }
.traffic-light.yellow { background: #FFBD2E; }
.traffic-light.green { background: #27C93F; }

.terminal-title-text {
  font-family: 'Fira Code', monospace;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.terminal-toolbar {
  display: flex;
  gap: 0.5rem;
}

.terminal-tool-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.terminal-tool-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.terminal-screen {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
  font-family: 'Fira Code', monospace;
  font-size: 0.9rem;
  line-height: 1.6;
  color: #D1D5DB;
  min-height: 480px;
  max-height: 600px;
}

.terminal-welcome {
  color: #9CA3AF;
  margin-bottom: 1.25rem;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
  padding-bottom: 1rem;
}

.terminal-welcome span.brand {
  color: var(--accent-cyan);
  font-weight: 700;
}

.terminal-line {
  margin-bottom: 0.65rem;
  word-break: break-all;
}

.terminal-command-line {
  color: #60A5FA;
}

.terminal-prompt {
  color: #10B981;
  font-weight: 600;
  user-select: none;
}

.terminal-input-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.terminal-input-row .terminal-prompt {
  color: #10B981;
}

.terminal-cli-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #F9FAFB;
  font-family: 'Fira Code', monospace;
  font-size: 0.9rem;
}

/* --------------------------------------------------------------------------
   Exam Quiz & Cheatsheet Views
   -------------------------------------------------------------------------- */
.quiz-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.quiz-question-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.quiz-options-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.quiz-option {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.quiz-option:hover {
  border-color: var(--brand-color);
  color: var(--text-primary);
}

.quiz-option.selected {
  border-color: var(--brand-color);
  background: rgba(50, 108, 229, 0.15);
  color: #FFFFFF;
}

.quiz-option.correct {
  border-color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
}

.quiz-option.wrong {
  border-color: var(--accent-rose);
  background: rgba(244, 63, 94, 0.15);
  color: #F43F5E;
}

.quiz-explanation {
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent-cyan);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  display: none;
}

.quiz-explanation.show {
  display: block;
}

@media (max-width: 900px) {
  .terminal-view-container {
    grid-template-columns: 1fr;
  }
}