/**
 * How It Works Page Styles
 * Extends: material-design-3.css
 */

/* Theme Toggle */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 1000;
  background: var(--md-sys-color-surface-1);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--md-sys-color-on-surface);
  box-shadow: var(--md-sys-elevation-2);
  transition: var(--theme-transition), transform 0.2s;
}

.theme-toggle:hover {
  transform: scale(1.05);
  background: var(--md-sys-color-surface-2);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-toggle .material-icons {
  font-size: 22px;
}

.theme-toggle .icon-light { display: none; }
.theme-toggle .icon-dark { display: block; }

[data-theme="dark"] .theme-toggle .icon-light { display: block; }
[data-theme="dark"] .theme-toggle .icon-dark { display: none; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-light { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon-dark { display: none; }
}

/* Page Background */
body {
  background: linear-gradient(135deg, var(--md-sys-color-surface) 0%, var(--md-sys-color-surface-1) 100%);
  min-height: 100vh;
  padding: 20px;
  transition: var(--theme-transition);
}

/* Container */
.container {
  max-width: 900px;
  margin: 0 auto;
}

/* Header Card */
.header-card {
  background: var(--md-sys-color-surface-1);
  border-radius: 16px;
  padding: 40px;
  margin-bottom: 20px;
  box-shadow: var(--md-sys-elevation-2);
  text-align: center;
  position: relative;
}

.back-link {
  position: absolute;
  top: 20px;
  left: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--md-sys-color-primary);
  text-decoration: none;
  font-size: 14px;
  transition: opacity 0.2s;
}

.back-link:hover {
  opacity: 0.8;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 500;
  color: var(--md-sys-color-primary);
  margin-bottom: 12px;
}

.page-subtitle {
  font-size: 1.1rem;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 20px;
}

/* Status Badges */
.status-badges {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
}

.badge .material-icons {
  font-size: 1.1rem;
}

.badge-success {
  background: rgba(76, 175, 80, 0.15);
  color: #81c784;
}

.badge-info {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

/* Content Card */
.content-card {
  background: var(--md-sys-color-surface-1);
  border-radius: 16px;
  padding: 40px;
  margin-bottom: 20px;
  box-shadow: var(--md-sys-elevation-2);
}

/* Sections */
.section {
  margin-bottom: 48px;
}

.section:last-child {
  margin-bottom: 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--md-sys-color-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--md-sys-color-outline-variant);
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title .material-icons {
  font-size: 1.8rem;
}

.subsection-title {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  margin: 24px 0 16px;
}

.description {
  font-size: 1rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.8;
  margin-bottom: 20px;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--md-sys-color-surface-2);
  border-radius: 12px;
  padding: 24px;
  border-left: 4px solid var(--md-sys-color-primary);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--md-sys-elevation-2);
}

.feature-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.feature-icon {
  color: var(--md-sys-color-primary);
}

.feature-icon .material-icons {
  font-size: 2rem;
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
}

.feature-description {
  font-size: 0.95rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.6;
  margin: 0;
}

/* Rules List */
.rules-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rule-item {
  background: var(--md-sys-color-surface-2);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  border-left: 4px solid var(--md-sys-color-primary);
}

.rule-icon {
  color: var(--md-sys-color-primary);
  flex-shrink: 0;
}

.rule-icon .material-icons {
  font-size: 1.8rem;
}

.rule-content {
  flex: 1;
}

.rule-title {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  display: block;
  margin-bottom: 6px;
}

.rule-text {
  font-size: 0.95rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.6;
  margin: 0;
}

/* Tech Grid */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.tech-item {
  background: var(--md-sys-color-surface-2);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tech-label {
  font-size: 0.85rem;
  color: var(--md-sys-color-on-surface-variant);
}

.tech-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  font-family: 'Roboto Mono', monospace;
  word-break: break-all;
  overflow-wrap: break-word;
}

/* Endpoints List */
.endpoints-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.endpoint-item {
  background: var(--md-sys-color-surface-2);
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.endpoint-method {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  font-family: 'Roboto Mono', monospace;
}

.endpoint-path {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface-3);
  padding: 4px 8px;
  border-radius: 4px;
}

.endpoint-desc {
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
  margin-left: auto;
}

/* User Control & Opt-out Cards */
.user-control-card,
.optout-card {
  background: var(--md-sys-color-surface-2);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
}

.user-control-card {
  border-left: 4px solid var(--md-sys-color-primary);
}

.optout-card {
  border-left: 4px solid var(--md-sys-color-tertiary);
}

.optout-list {
  margin: 16px 0;
  padding-left: 24px;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 2;
}

.optout-list li {
  margin-bottom: 4px;
}

.optout-result {
  font-size: 0.95rem;
  color: var(--md-sys-color-on-surface);
  font-weight: 500;
  margin: 0;
  padding: 12px 16px;
  background: var(--md-sys-color-surface-3);
  border-radius: 8px;
}

/* Source Link */
.source-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  padding: 12px 24px;
  border-radius: 24px;
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s, transform 0.2s;
}

.source-link:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}


/* Comparison Grid */
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.comparison-card {
  border-radius: 12px;
  padding: 24px;
  transition: transform 0.2s;
}

.comparison-card:hover {
  transform: translateY(-2px);
}

.comparison-card.bad {
  background: rgba(244, 67, 54, 0.08);
  border: 1px solid rgba(244, 67, 54, 0.2);
}

.comparison-card.good {
  background: rgba(76, 175, 80, 0.08);
  border: 1px solid rgba(76, 175, 80, 0.2);
}

.comparison-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.comparison-card.bad .comparison-header {
  color: #f44336;
}

.comparison-card.good .comparison-header {
  color: #4caf50;
}

.comparison-header .material-icons {
  font-size: 1.8rem;
}

.comparison-header h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin: 0;
}

.comparison-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.comparison-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.5;
}

.comparison-list li .material-icons {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.comparison-card.bad .comparison-list li .material-icons {
  color: #f44336;
}

.comparison-card.good .comparison-list li .material-icons {
  color: #4caf50;
}

/* Activity Grid */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.activity-card {
  background: var(--md-sys-color-surface-2);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.activity-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--md-sys-elevation-2);
}

.activity-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.activity-icon.create {
  background: rgba(76, 175, 80, 0.15);
  color: #4caf50;
}

.activity-icon.delete {
  background: rgba(244, 67, 54, 0.15);
  color: #f44336;
}

.activity-icon.update {
  background: rgba(33, 150, 243, 0.15);
  color: #2196f3;
}

.activity-icon.block {
  background: rgba(255, 152, 0, 0.15);
  color: #ff9800;
}

.activity-icon.mention {
  background: rgba(156, 39, 176, 0.15);
  color: #9c27b0;
}

.activity-icon .material-icons {
  font-size: 1.5rem;
}

.activity-content h4 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  margin: 0 0 6px;
}

.activity-content p {
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.5;
  margin: 0;
}

/* Requirements List */
.requirements-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.requirement-item {
  background: var(--md-sys-color-surface-2);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.requirement-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.requirement-badge.required {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.requirement-badge .material-icons {
  font-size: 1.5rem;
}

.requirement-content h4 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  margin: 0 0 6px;
}

.requirement-content p {
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.5;
  margin: 0;
}

/* Opt-out Methods */
.optout-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.optout-method {
  background: var(--md-sys-color-surface-2);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--md-sys-color-on-surface);
}

.optout-method .material-icons {
  color: var(--md-sys-color-tertiary);
  font-size: 1.4rem;
}

.optout-result {
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid rgba(76, 175, 80, 0.2);
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.optout-result .material-icons {
  color: #4caf50;
  font-size: 1.5rem;
}

.optout-result p {
  font-size: 0.95rem;
  color: var(--md-sys-color-on-surface);
  margin: 0;
  font-weight: 500;
}

/* How to Disable Indexing */
.how-to-disable {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.how-to-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  margin: 0 0 16px 0;
}

.software-guides {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.software-guide {
  background: var(--md-sys-color-surface-2);
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.software-name {
  font-weight: 600;
  color: var(--md-sys-color-primary);
  min-width: 180px;
}

.software-path {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.9rem;
}

.software-option {
  color: var(--md-sys-color-on-surface);
  font-size: 0.9rem;
  flex: 1;
}

.doc-link {
  color: var(--md-sys-color-primary);
  display: flex;
  align-items: center;
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.doc-link:hover {
  opacity: 1;
}

.doc-link .material-icons {
  font-size: 1.2rem;
}

/* Privacy List */
.privacy-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.privacy-item {
  background: var(--md-sys-color-surface-2);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--md-sys-color-on-surface);
}

.privacy-item .material-icons {
  color: var(--md-sys-color-primary);
  font-size: 1.4rem;
}

/* Discovery Flow */
.discovery-flow {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flow-step {
  background: var(--md-sys-color-surface-2);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.flow-number {
  width: 40px;
  height: 40px;
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 600;
  flex-shrink: 0;
}

.flow-content h4 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  margin: 0 0 6px;
}

.flow-content p {
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.5;
  margin: 0;
}

.flow-arrow {
  display: flex;
  justify-content: center;
  padding: 4px 0;
  color: var(--md-sys-color-outline);
}

.flow-arrow .material-icons {
  font-size: 1.2rem;
}

/* Tech Info */
.tech-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.tech-info .tech-item {
  background: var(--md-sys-color-surface-2);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* Responsive */
@media (max-width: 768px) {
  .header-card,
  .content-card {
    padding: 24px;
  }

  .page-title {
    font-size: 2rem;
    margin-top: 20px;
  }

  .back-link {
    position: static;
    margin-bottom: 16px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .tech-grid {
    grid-template-columns: 1fr;
  }

  .endpoint-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .endpoint-desc {
    margin-left: 0;
  }

  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .activity-grid {
    grid-template-columns: 1fr;
  }

  .optout-methods {
    grid-template-columns: 1fr;
  }

  .privacy-list {
    grid-template-columns: 1fr;
  }

  .software-guide {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .software-name {
    min-width: auto;
  }

  .doc-link {
    align-self: flex-end;
    margin-top: 8px;
  }

  .tech-info {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  .header-card,
  .content-card {
    padding: 20px;
  }

  .page-title {
    font-size: 1.75rem;
  }

  .section-title {
    font-size: 1.25rem;
  }
}

/* Commands Grid */
.commands-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.command-card {
  background: var(--md-sys-color-surface-2);
  border-radius: 12px;
  padding: 20px;
  border-left: 4px solid var(--md-sys-color-primary);
}

.command-example {
  margin-bottom: 12px;
}

.command-example code {
  background: var(--md-sys-color-surface-3);
  padding: 8px 16px;
  border-radius: 8px;
  font-family: 'Roboto Mono', monospace;
  font-size: 0.95rem;
  color: var(--md-sys-color-primary);
  display: inline-block;
}

.command-content h4 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  margin: 0 0 6px;
}

.command-content p {
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.5;
  margin: 0;
}

.command-note {
  background: var(--md-sys-color-surface-2);
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
}

.command-note .material-icons {
  color: var(--md-sys-color-primary);
  font-size: 1.2rem;
}

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