/* Snippets - Base Styles */

/* CSS Variables */
:root {
  /* Colors - Light Theme */
  --color-bg: #ffffff;
  --color-bg-secondary: #f6f8fa;
  --color-text: #24292f;
  --color-text-secondary: #57606a;
  --color-border: #d0d7de;
  --color-primary: #0969da;
  --color-primary-hover: #0550ae;
  --color-error: #cf222e;
  --color-error-bg: #ffebe9;
  --color-success: #1a7f37;
  --color-success-bg: #dafbe1;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Dark Theme */
[data-theme="dark"] {
  --color-bg: #0d1117;
  --color-bg-secondary: #161b22;
  --color-text: #e6edf3;
  --color-text-secondary: #8b949e;
  --color-border: #30363d;
  --color-primary: #58a6ff;
  --color-primary-hover: #79c0ff;
  --color-error: #f85149;
  --color-error-bg: #490202;
  --color-success: #3fb950;
  --color-success-bg: #12261e;
}

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

/* Base styles */
html {
  font-size: 16px;
  line-height: 1.5;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
}

/* Layout */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

/* Header */
.header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.header h1 {
  font-size: 1.5rem;
  font-weight: 600;
}

.header a {
  color: var(--color-primary);
  text-decoration: none;
}

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

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.form-label.required::after {
  content: ' *';
  color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.15);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
}

.form-input.error:focus,
.form-select.error:focus,
.form-textarea.error:focus {
  box-shadow: 0 0 0 3px rgba(207, 34, 46, 0.15);
}

.form-textarea {
  font-family: var(--font-mono);
  min-height: 200px;
  resize: vertical;
}

/* Select styling */
.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2357606a' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--spacing-sm) center;
  background-repeat: no-repeat;
  background-size: 20px;
  padding-right: 40px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  font-weight: 500;
  font-family: inherit;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  border: 1px solid var(--color-primary);
}

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

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

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

.btn-sm {
  font-size: 0.875rem;
  padding: var(--spacing-xs) var(--spacing-sm);
}

/* Card */
.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
}

/* API reference */
.docs h3 {
  font-size: 1rem;
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.docs p,
.docs ul {
  margin-bottom: var(--spacing-md);
}

.docs ul {
  padding-left: var(--spacing-lg);
}

.docs code:not(.code-block code) {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

/* Snippet View */
.snippet-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.snippet-title {
  font-size: 1.5rem;
  font-weight: 600;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
}

.snippet-meta {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
}

.snippet-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

/* Code block */
.code-block {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-block pre {
  margin: 0;
  padding: var(--spacing-md);
  overflow-x: auto;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* Messages */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
}

.alert-error {
  background-color: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

/* Footer */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-top: var(--spacing-xl);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* Utility classes */
.text-center {
  text-align: center;
}

.text-muted {
  color: var(--color-text-secondary);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

/* Responsive */
@media (max-width: 600px) {
  .container {
    padding: var(--spacing-md);
  }

  .header {
    padding: var(--spacing-md);
  }

  .card {
    padding: var(--spacing-md);
  }

  .snippet-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .snippet-actions {
    flex-wrap: wrap;
  }
}

/* Navigation links */
.nav-links {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.nav-links a:hover {
  color: var(--color-primary);
  background-color: var(--color-bg-secondary);
}

.nav-links a.active {
  color: var(--color-primary);
  font-weight: 500;
}

/* Header with navigation */
.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Browse page layout */
.browse-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: var(--spacing-lg);
}

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

/* Filter sidebar */
.filter-sidebar {
  background: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.filter-section {
  margin-bottom: var(--spacing-md);
}

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

.filter-section h3 {
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  letter-spacing: 0.05em;
}

.filter-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.filter-list li {
  margin-bottom: var(--spacing-xs);
}

.filter-list a {
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
}

.filter-list a:hover,
.filter-list a.active {
  background: var(--color-primary);
  color: white;
}

/* Button block */
.btn-block {
  display: block;
  width: 100%;
}

/* Browse content area */
.browse-content {
  min-width: 0;
}

.browse-header {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.browse-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
}

/* Active filters */
.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.filter-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.filter-remove {
  color: inherit;
  text-decoration: none;
  font-size: 1.25rem;
  line-height: 1;
  margin-left: var(--spacing-xs);
  opacity: 0.7;
}

.filter-remove:hover {
  opacity: 1;
}

/* Snippet card in list */
.snippet-card {
  display: block;
  padding: var(--spacing-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.snippet-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-color: var(--color-primary);
}

.snippet-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.snippet-card-meta {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.snippet-card-date {
  margin-left: auto;
}

.snippet-card-preview {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Tag badge */
.badge-tag {
  background: #0969da;
  color: white;
}

.badge-tag.active {
  background: #0550ae;
}

.badge-locked {
  background: #8957e5;
  color: white;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--color-text-secondary);
}

.empty-state p {
  margin-bottom: var(--spacing-md);
}

/* Responsive header */
@media (max-width: 600px) {
  .header .container {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .nav-links {
    width: 100%;
    justify-content: center;
  }
}

/* Modal styles */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-overlay.visible {
  display: flex;
}

.modal {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-md);
}

.modal h3 {
  margin-bottom: var(--spacing-sm);
}

.modal-preview {
  background: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  margin: var(--spacing-md) 0;
}

.modal-preview p {
  margin-bottom: var(--spacing-xs);
}

.modal-code-preview {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background: var(--color-bg);
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.modal-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

/* Danger button for delete actions */
.btn-danger {
  background-color: var(--color-error);
  color: white;
  border: 1px solid var(--color-error);
}

.btn-danger:hover {
  background-color: #a81d26;
  border-color: #a81d26;
}

/* Theme Toggle Button */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.15s ease;
  line-height: 1;
}

.theme-toggle:hover {
  background: var(--color-bg-secondary);
}

.theme-icon-dark {
  display: none;
}

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

[data-theme="dark"] .theme-icon-dark {
  display: inline;
}

/* Shiki dual themes (D1): consume the --shiki-light/dark vars emitted per
   token (defaultColor:false), else every token renders in body text color. */
.shiki,
.shiki span {
  color: var(--shiki-light);
  background-color: transparent;
}

.shiki {
  background-color: var(--shiki-light-bg, #ffffff) !important;
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  overflow-x: auto;
}

[data-theme="dark"] .shiki,
[data-theme="dark"] .shiki span {
  color: var(--shiki-dark);
}

[data-theme="dark"] .shiki {
  background-color: var(--shiki-dark-bg, #0d1117) !important;
}

.shiki code {
  display: block;
  width: fit-content;
  min-width: 100%;
}

/* Line numbers for Shiki code blocks */
span.line {
  display: block;
  position: relative;
}

.line-number {
  display: inline-block;
  min-width: 3ch;
  padding-right: 12px;
  margin-right: 12px;
  text-align: right;
  color: var(--color-text-secondary);
  user-select: none;
  border-right: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* QR modal styles */
.modal-qr-code {
  display: flex;
  justify-content: center;
  padding: var(--spacing-md);
}

/* Warning alert (edit-token/burn banner); dark variant swaps palette. */
.alert-warning {
  background: #fff3cd;
  border: 1px solid #ffc107;
  color: #856404;
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
}

[data-theme="dark"] .alert-warning {
  background: #3d2a00;
  border-color: #6e4c00;
  color: #ffc107;
}

[data-theme="dark"] mark {
  background-color: #6e4c00;
  color: #ffc107;
}

/* Snippet description rendered from Markdown */
.snippet-description {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.snippet-description p:last-child {
  margin-bottom: 0;
}

.snippet-description code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background-color: var(--color-bg-secondary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.snippet-description a {
  color: var(--color-primary);
  text-decoration: none;
}

.snippet-description a:hover {
  text-decoration: underline;
}

.snippet-description pre {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  overflow-x: auto;
  font-size: 0.875rem;
}

[data-theme="dark"] .badge-tag {
  background: #1f6feb;
}

/* Browse card progressive highlighting */
.snippet-card-preview {
  opacity: 0.7;
  transition: opacity 0.2s ease;
  max-height: calc(0.875rem * 1.6 * 5);
  overflow: hidden;
}

.snippet-card-preview.shiki-loaded {
  opacity: 1;
}

.snippet-card-preview .shiki {
  background-color: transparent !important;
}

/* Card preview token colors follow the theme too */
.snippet-card-preview .shiki,
.snippet-card-preview .shiki span {
  color: var(--shiki-light);
}

[data-theme="dark"] .snippet-card-preview .shiki,
[data-theme="dark"] .snippet-card-preview .shiki span {
  color: var(--shiki-dark);
}

/* Browse pagination (#16) */
.pagination {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* D14: white on #58a6ff is 2.5:1; dark text passes on the bright accents.
   Light-theme #0969da is 5.2:1 with white and stays as is. */
[data-theme="dark"] .btn-primary {
  background-color: var(--color-primary);
  color: #0d1117;
  border-color: var(--color-primary);
}

[data-theme="dark"] .btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: #0d1117;
  border-color: var(--color-primary-hover);
}

.badge-burn {
  background-color: #ff6b6b;
  color: white;
}

[data-theme="dark"] .badge-burn {
  color: #0d1117;
}

/* Expiring badge: #856404 on #ffc107 is 3.4:1; darken the text to 4.5:1. */
.badge-expiring {
  background-color: #ffc107;
  color: #5c4403;
  font-size: 0.75rem;
}

/* Revision history list (D16) */
.revision-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0;
}

.revision-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  background: var(--color-bg-secondary);
}

.revision-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
}

.revision-number {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.revision-date {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.revision-title {
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.revision-tags {
  margin-bottom: var(--spacing-sm);
}

/* Security: inline style replacements for CSP nonce compliance */
.modal-narrow { max-width: 360px; }
.modal-qr-canvas { max-width: 300px; }
.modal-qr-url { font-family: var(--font-mono); font-size: 0.875rem; text-align: center; margin-bottom: var(--spacing-md); }
.form-inline { display: inline; }