/* ============================================================
   markdown-preview.css — Chedders Tools
   ============================================================ */

/* --- Base --- */
:root {
  --primary: #0b1f3a;
  --primary-light: #16345f;
  --background: #ffffff;
  --surface: #f8f9fa;
  --text: #111111;
  --muted: #6c757d;
  --border: #e5e7eb;
  --shadow: rgba(0,0,0,0.05);
}

[data-theme="dark"] {
  --background: #081120;
  --surface: #0f1c2e;
  --text: #ffffff;
  --muted: #b0b7c3;
  --border: rgba(255,255,255,0.08);
  --shadow: rgba(0,0,0,0.3);
}

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

body {
  font-family: 'Inter', 'Plus Jakarta Sans', 'Manrope', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--background);
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* --- Layout --- */
.container-xl {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navbar --- */
.navbar {
  height: 60px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.navbar .container-xl {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.navbar-brand {
  text-decoration: none;
  font-size: 16px;
}

.brand-text {
  font-weight: 700;
  color: var(--primary);
}

[data-theme="dark"] .brand-text {
  color: #ffffff;
}

.brand-dot {
  font-weight: 700;
  color: var(--primary);
}

[data-theme="dark"] .brand-dot {
  color: #ffffff;
}

.brand-tools {
  font-weight: 400;
  color: var(--muted);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-back {
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-back:hover {
  color: var(--primary);
}

[data-theme="dark"] .nav-back:hover {
  color: #ffffff;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 14px;
  transition: border-color 0.2s;
}

.theme-toggle:hover {
  border-color: var(--primary);
}

/* --- Page Header --- */
.tool-header {
  padding: 40px 0 24px;
}

.tool-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

[data-theme="dark"] .tool-title {
  color: #ffffff;
}

.tool-description {
  font-size: 15px;
  color: var(--muted);
  margin-top: 6px;
}

/* --- Tool Main --- */
.tool-main {
  padding: 0 0 80px;
}

/* --- Tool Card --- */
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  box-shadow: 0 2px 8px var(--shadow);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.tool-card--wide {
  max-width: 100%;
}

/* --- Toolbar --- */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.toolbar-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* --- Toggle Switch --- */
.toggle-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.toggle-switch input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  display: inline-block;
  width: 40px;
  height: 22px;
  background: var(--border);
  border-radius: 11px;
  position: relative;
  transition: background-color 0.2s;
  flex-shrink: 0;
}

.toggle-track::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: #ffffff;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform 0.2s;
}

.toggle-switch input:checked + .toggle-track {
  background: var(--primary);
}

.toggle-switch input:checked + .toggle-track::after {
  transform: translateX(18px);
}

.toggle-label {
  font-size: 14px;
  color: var(--muted);
  user-select: none;
}

/* --- Editor Layout --- */
.editor-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
}

.editor-layout.stacked {
  grid-template-columns: 1fr;
}

.pane-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

/* --- Textarea --- */
.tool-textarea {
  width: 100%;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  line-height: 1.6;
  resize: vertical;
  transition: border-color 0.2s, background-color 0.25s ease, color 0.25s ease;
}

.editor-textarea {
  min-height: 400px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 14px;
}

.tool-textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: 0;
  border-color: var(--primary);
}

.tool-textarea::placeholder {
  color: var(--muted);
}

/* --- Preview Pane --- */
.markdown-preview {
  min-height: 400px;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px 20px;
  overflow-y: auto;
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.preview-placeholder {
  color: var(--muted);
  font-style: italic;
}

/* --- Markdown Typography in Preview --- */
.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3,
.markdown-preview h4,
.markdown-preview h5,
.markdown-preview h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-top: 1.4em;
  margin-bottom: 0.5em;
  color: var(--primary);
}

[data-theme="dark"] .markdown-preview h1,
[data-theme="dark"] .markdown-preview h2,
[data-theme="dark"] .markdown-preview h3,
[data-theme="dark"] .markdown-preview h4,
[data-theme="dark"] .markdown-preview h5,
[data-theme="dark"] .markdown-preview h6 {
  color: #ffffff;
}

.markdown-preview h1 { font-size: 28px; }
.markdown-preview h2 { font-size: 22px; }
.markdown-preview h3 { font-size: 18px; }
.markdown-preview h4 { font-size: 16px; }

.markdown-preview h1:first-child,
.markdown-preview h2:first-child,
.markdown-preview h3:first-child {
  margin-top: 0;
}

.markdown-preview p {
  margin-bottom: 1em;
}

.markdown-preview ul,
.markdown-preview ol {
  margin: 0 0 1em 1.4em;
  padding: 0;
}

.markdown-preview li {
  margin-bottom: 0.3em;
}

.markdown-preview blockquote {
  border-left: 3px solid var(--primary);
  margin: 1em 0;
  padding: 8px 16px;
  background: var(--surface);
  border-radius: 0 4px 4px 0;
  color: var(--muted);
  font-style: italic;
}

.markdown-preview code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
}

.markdown-preview pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  overflow-x: auto;
  margin: 1em 0;
}

.markdown-preview pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 13px;
}

.markdown-preview table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 14px;
}

.markdown-preview th,
.markdown-preview td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}

.markdown-preview th {
  background: var(--surface);
  font-weight: 600;
}

.markdown-preview a {
  color: var(--primary);
}

[data-theme="dark"] .markdown-preview a {
  color: #7eb3ff;
}

.markdown-preview img {
  max-width: 100%;
  height: auto;
}

.markdown-preview hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.5em 0;
}

/* --- Buttons --- */
.btn-secondary-custom {
  background: var(--background);
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 6px;
  padding: 10px 24px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
}

.btn-secondary-custom:hover {
  background: var(--primary);
  color: #ffffff;
}

[data-theme="dark"] .btn-secondary-custom {
  color: #ffffff;
  border-color: rgba(255,255,255,0.3);
}

[data-theme="dark"] .btn-secondary-custom:hover {
  background: var(--primary-light);
  border-color: var(--primary-light);
}

/* --- Footer --- */
.site-footer {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  transition: border-color 0.25s ease;
}

.footer-text {
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

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

[data-theme="dark"] .footer-text a {
  color: #ffffff;
}

/* --- Responsive --- */
@media (max-width: 767px) {
  .editor-layout {
    grid-template-columns: 1fr;
  }

  .toggle-switch {
    display: none;
  }
}

@media (max-width: 575px) {
  .tool-card {
    padding: 16px;
  }

  .tool-title {
    font-size: 22px;
  }

  .btn-secondary-custom {
    width: 100%;
  }

  .toolbar-actions {
    width: 100%;
  }
}