/* SPDX-License-Identifier: MIT */
/* Copyright (c) 2025-2026 Robworks Software LLC */

/* ============================================================
   Interactive Textbook Components - Theme-Aware Styles
   Uses Material CSS custom properties for light/dark mode.

   Semantic color variables defined below adapt to the active
   color scheme. Terminal colors are intentionally fixed (always
   dark) to match real terminal aesthetics.
   ============================================================ */

/* ---- Semantic color tokens ---- */

:root {
  --rb-color-correct: #2e7d32;
  --rb-color-correct-bg: color-mix(in srgb, #2e7d32 10%, transparent);
  --rb-color-correct-bg-strong: color-mix(in srgb, #2e7d32 20%, transparent);
  --rb-color-incorrect: #c62828;
  --rb-color-incorrect-bg: color-mix(in srgb, #c62828 10%, transparent);
  --rb-color-incorrect-bg-strong: color-mix(in srgb, #c62828 20%, transparent);
  --rb-color-warning: #f57f17;
  --rb-color-warning-bg: color-mix(in srgb, #f57f17 20%, transparent);
}

[data-md-color-scheme="slate"] {
  --rb-color-correct: #66bb6a;
  --rb-color-correct-bg: color-mix(in srgb, #66bb6a 12%, transparent);
  --rb-color-correct-bg-strong: color-mix(in srgb, #66bb6a 20%, transparent);
  --rb-color-incorrect: #ef5350;
  --rb-color-incorrect-bg: color-mix(in srgb, #ef5350 12%, transparent);
  --rb-color-incorrect-bg-strong: color-mix(in srgb, #ef5350 20%, transparent);
  --rb-color-warning: #ffb74d;
  --rb-color-warning-bg: color-mix(in srgb, #ffb74d 20%, transparent);
}

/* ---- Shared ---- */

.interactive-quiz,
.interactive-exercise,
.interactive-terminal,
.interactive-command-builder,
.interactive-code-walkthrough {
  margin: 1.5rem 0;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.5rem;
  overflow: hidden;
}

.interactive-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  background: var(--md-code-bg-color);
}

.interactive-header .icon {
  font-size: 1.1rem;
  line-height: 1;
}

.interactive-body {
  padding: 1rem;
}

/* ---- Quiz ---- */

.interactive-quiz .quiz-question {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--md-default-fg-color);
}

.interactive-quiz .quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.interactive-quiz .quiz-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.875rem;
  border: 2px solid var(--md-default-fg-color--lightest);
  border-radius: 0.375rem;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  background: transparent;
  color: var(--md-default-fg-color);
  font-size: 0.9rem;
  text-align: left;
  width: 100%;
  font-family: inherit;
}

.interactive-quiz .quiz-option:hover:not(.selected):not(.disabled) {
  border-color: var(--md-accent-fg-color);
  background: color-mix(in srgb, var(--md-accent-fg-color) 8%, transparent);
}

.interactive-quiz .quiz-option .option-marker {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  border: 2px solid var(--md-default-fg-color--lighter);
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: all 0.15s;
}

.interactive-quiz .quiz-option.correct {
  border-color: var(--rb-color-correct);
  background: var(--rb-color-correct-bg);
}

.interactive-quiz .quiz-option.correct .option-marker {
  background: var(--rb-color-correct);
  border-color: var(--rb-color-correct);
  color: white;
}

.interactive-quiz .quiz-option.incorrect {
  border-color: var(--rb-color-incorrect);
  background: var(--rb-color-incorrect-bg);
}

.interactive-quiz .quiz-option.incorrect .option-marker {
  background: var(--rb-color-incorrect);
  border-color: var(--rb-color-incorrect);
  color: white;
}

.interactive-quiz .quiz-option.disabled {
  cursor: default;
  opacity: 0.7;
}

.interactive-quiz .quiz-feedback {
  margin-top: 0.5rem;
  padding: 0.625rem 0.875rem;
  border-radius: 0.375rem;
  font-size: 0.85rem;
  line-height: 1.5;
  display: none;
}

.interactive-quiz .quiz-feedback.visible {
  display: block;
}

.interactive-quiz .quiz-feedback.correct {
  background: var(--rb-color-correct-bg);
  color: var(--md-default-fg-color);
  border-left: 3px solid var(--rb-color-correct);
}

.interactive-quiz .quiz-feedback.incorrect {
  background: var(--rb-color-incorrect-bg);
  color: var(--md-default-fg-color);
  border-left: 3px solid var(--rb-color-incorrect);
}

.interactive-quiz .quiz-actions {
  margin-top: 0.75rem;
  display: flex;
  gap: 0.5rem;
}

.interactive-quiz .quiz-retry,
.interactive-exercise .exercise-btn,
.interactive-terminal .terminal-btn,
.interactive-command-builder .builder-btn {
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--md-primary-fg-color);
  border-radius: 0.25rem;
  background: transparent;
  color: var(--md-primary-fg-color);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  font-family: inherit;
}

.interactive-quiz .quiz-retry:hover,
.interactive-exercise .exercise-btn:hover,
.interactive-terminal .terminal-btn:hover,
.interactive-command-builder .builder-btn:hover {
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color);
}

.interactive-quiz .quiz-score {
  font-size: 0.8rem;
  color: var(--md-default-fg-color--light);
  padding: 0.375rem 0;
  line-height: 1.5;
}

/* ---- Exercise ---- */

.interactive-exercise .exercise-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.interactive-exercise .exercise-difficulty {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 1rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.interactive-exercise .exercise-difficulty.beginner {
  background: var(--rb-color-correct-bg-strong);
  color: var(--rb-color-correct);
}

.interactive-exercise .exercise-difficulty.intermediate {
  background: var(--rb-color-warning-bg);
  color: var(--rb-color-warning);
}

.interactive-exercise .exercise-difficulty.advanced {
  background: var(--rb-color-incorrect-bg-strong);
  color: var(--rb-color-incorrect);
}

.interactive-exercise .exercise-scenario {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1rem;
  color: var(--md-default-fg-color);
}

.interactive-exercise .exercise-hints {
  margin-bottom: 1rem;
}

.interactive-exercise .exercise-hint {
  padding: 0.5rem 0.75rem;
  margin-bottom: 0.375rem;
  border-left: 3px solid var(--md-accent-fg-color);
  background: color-mix(in srgb, var(--md-accent-fg-color) 8%, transparent);
  border-radius: 0 0.25rem 0.25rem 0;
  font-size: 0.85rem;
  display: none;
}

.interactive-exercise .exercise-hint.visible {
  display: block;
}

.interactive-exercise .exercise-solution {
  margin-top: 1rem;
  display: none;
}

.interactive-exercise .exercise-solution.visible {
  display: block;
}

.interactive-exercise .exercise-solution-content {
  padding: 0.75rem;
  background: var(--md-code-bg-color);
  border-radius: 0.375rem;
  font-size: 0.85rem;
  line-height: 1.6;
}

.interactive-exercise .exercise-solution-content pre {
  margin: 0.5rem 0;
}

.interactive-exercise .exercise-solution-content code {
  font-size: 0.85em;
}

.interactive-exercise .exercise-complete {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--rb-color-correct);
  font-weight: 600;
}

.interactive-exercise .exercise-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* ---- Simulated Terminal ----
   Terminal colors are intentionally fixed (always dark) to match
   real terminal aesthetics regardless of the site theme. */

.interactive-terminal {
  border-color: #1a1a2e;
}

.interactive-terminal .interactive-header {
  background: #1a1a2e;
  color: #a0a0b0;
  border-bottom-color: #2a2a3e;
}

.interactive-terminal .terminal-window {
  background: #0d1117;
  padding: 1rem;
  font-family: "SFMono-Regular", "Consolas", "Liberation Mono", "Menlo", monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  min-height: 6rem;
  color: #e6edf3;
  overflow-x: auto;
}

.interactive-terminal .terminal-line {
  margin-bottom: 0.25rem;
  white-space: pre-wrap;
  word-break: break-all;
}

.interactive-terminal .terminal-prompt {
  color: #7ee787;
}

.interactive-terminal .terminal-command {
  color: #e6edf3;
}

.interactive-terminal .terminal-output {
  color: #8b949e;
}

.interactive-terminal .terminal-cursor {
  display: inline-block;
  width: 0.55em;
  height: 1.1em;
  background: #58a6ff;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.interactive-terminal .terminal-narration {
  padding: 0.625rem 1rem;
  background: color-mix(in srgb, var(--md-accent-fg-color) 10%, var(--md-code-bg-color));
  border-top: 1px solid var(--md-default-fg-color--lightest);
  font-size: 0.85rem;
  color: var(--md-default-fg-color);
  font-family: var(--md-text-font-family);
}

.interactive-terminal .terminal-controls {
  display: flex;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--md-code-bg-color);
  border-top: 1px solid var(--md-default-fg-color--lightest);
}

.interactive-terminal .terminal-step-indicator {
  font-size: 0.75rem;
  color: var(--md-default-fg-color--light);
  padding: 0.375rem 0;
  margin-left: auto;
}

/* ---- Command Builder ---- */

.interactive-command-builder .builder-description {
  font-size: 0.9rem;
  color: var(--md-default-fg-color--light);
  margin-bottom: 1rem;
}

.interactive-command-builder .builder-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.interactive-command-builder .builder-option {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 0.5rem;
  align-items: start;
}

@media (max-width: 600px) {
  .interactive-command-builder .builder-option {
    grid-template-columns: 1fr;
  }
}

.interactive-command-builder .builder-option label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--md-default-fg-color);
  padding-top: 0.375rem;
}

.interactive-command-builder .builder-option input,
.interactive-command-builder .builder-option select {
  padding: 0.375rem 0.625rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.25rem;
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  font-family: inherit;
  font-size: 0.85rem;
  width: 100%;
  box-sizing: border-box;
}

.interactive-command-builder .builder-option input:focus,
.interactive-command-builder .builder-option select:focus {
  outline: 2px solid var(--md-accent-fg-color);
  outline-offset: -1px;
  border-color: transparent;
}

.interactive-command-builder .builder-option .option-explanation {
  grid-column: 1 / -1;
  font-size: 0.8rem;
  color: var(--md-default-fg-color--light);
  padding-left: 0.25rem;
}

.interactive-command-builder .builder-result {
  position: relative;
  background: var(--md-code-bg-color);
  border-radius: 0.375rem;
  padding: 0.75rem 1rem;
  font-family: "SFMono-Regular", "Consolas", "Liberation Mono", "Menlo", monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--md-default-fg-color);
  word-break: break-all;
  margin-bottom: 0.75rem;
}

.interactive-command-builder .builder-result .base-cmd {
  color: var(--md-primary-fg-color);
  font-weight: 600;
}

.interactive-command-builder .builder-result .flag {
  color: var(--md-accent-fg-color);
}

.interactive-command-builder .builder-copy {
  position: absolute;
  top: 0.375rem;
  right: 0.375rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.7rem;
  background: var(--md-default-fg-color--lightest);
  border: none;
  border-radius: 0.25rem;
  cursor: pointer;
  color: var(--md-default-fg-color);
  font-family: inherit;
}

.interactive-command-builder .builder-copy:hover {
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color);
}

.interactive-command-builder .builder-explanations {
  font-size: 0.85rem;
  line-height: 1.6;
}

.interactive-command-builder .builder-explanations dt {
  font-weight: 600;
  color: var(--md-accent-fg-color);
  font-family: "SFMono-Regular", "Consolas", monospace;
  font-size: 0.85em;
}

.interactive-command-builder .builder-explanations dd {
  margin-left: 0;
  margin-bottom: 0.5rem;
  color: var(--md-default-fg-color--light);
}

.interactive-command-builder .builder-actions {
  display: flex;
  gap: 0.5rem;
}

/* ---- Code Walkthrough ---- */

.interactive-code-walkthrough .walkthrough-code {
  position: relative;
  background: var(--md-code-bg-color);
  overflow-x: auto;
}

.interactive-code-walkthrough .walkthrough-code pre {
  margin: 0;
  padding: 0.75rem 0;
}

.interactive-code-walkthrough .walkthrough-line {
  display: block;
  padding: 0 1rem 0 3.5rem;
  position: relative;
  line-height: 1.6;
  font-family: "SFMono-Regular", "Consolas", "Liberation Mono", "Menlo", monospace;
  font-size: 0.85rem;
  color: var(--md-default-fg-color);
  transition: background 0.2s;
}

.interactive-code-walkthrough .walkthrough-line .line-number {
  position: absolute;
  left: 0;
  width: 2.5rem;
  text-align: right;
  padding-right: 0.5rem;
  color: var(--md-default-fg-color--lighter);
  user-select: none;
}

.interactive-code-walkthrough .walkthrough-line.active {
  background: color-mix(in srgb, var(--md-primary-fg-color) 12%, transparent);
}

.interactive-code-walkthrough .walkthrough-annotation {
  padding: 0.625rem 1rem;
  background: color-mix(in srgb, var(--md-primary-fg-color) 8%, var(--md-code-bg-color));
  border-top: 2px solid var(--md-primary-fg-color);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--md-default-fg-color);
  min-height: 2.5rem;
}

.interactive-code-walkthrough .walkthrough-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--md-code-bg-color);
  border-top: 1px solid var(--md-default-fg-color--lightest);
}

.interactive-code-walkthrough .walkthrough-step-info {
  font-size: 0.75rem;
  color: var(--md-default-fg-color--light);
  margin-left: auto;
}

.interactive-code-walkthrough .walkthrough-controls button {
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--md-primary-fg-color);
  border-radius: 0.25rem;
  background: transparent;
  color: var(--md-primary-fg-color);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, color 0.15s;
}

.interactive-code-walkthrough .walkthrough-controls button:hover:not(:disabled) {
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color);
}

.interactive-code-walkthrough .walkthrough-controls button:disabled {
  opacity: 0.4;
  cursor: default;
}

.interactive-code-walkthrough .walkthrough-controls .show-all-toggle {
  border-color: var(--md-default-fg-color--lighter);
  color: var(--md-default-fg-color--light);
}

.interactive-code-walkthrough .walkthrough-controls .show-all-toggle.active {
  border-color: var(--md-accent-fg-color);
  color: var(--md-accent-fg-color);
}

/* ---- Progress Bar ---- */

.runbook-progress-bar {
  position: relative;
  height: 4px;
  background: var(--md-default-fg-color--lightest);
  border-radius: 2px;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.runbook-progress-bar .progress-fill {
  height: 100%;
  background: var(--md-primary-fg-color);
  border-radius: 2px;
  transition: width 0.5s ease;
  width: 0;
}

.runbook-progress-bar .progress-label {
  position: absolute;
  right: 0;
  top: 8px;
  font-size: 0.7rem;
  color: var(--md-default-fg-color--light);
}

/* Topic card progress on landing page */
.tx-topics a .topic-progress {
  display: block;
  margin-top: 0.5rem;
}

.tx-topics a .topic-progress-bar {
  height: 3px;
  background: var(--md-default-fg-color--lightest);
  border-radius: 2px;
  overflow: hidden;
}

.tx-topics a .topic-progress-fill {
  height: 100%;
  background: var(--md-primary-fg-color);
  border-radius: 2px;
  transition: width 0.5s ease;
}

.tx-topics a .topic-progress-text {
  font-size: 0.7rem;
  color: var(--md-default-fg-color--lighter);
  margin-top: 0.25rem;
}