/* ============================================================
   CodeForge — style.css
   Premium Dark/Light Static HTML+CSS+JS Editor UI
   ============================================================ */

/* ---- CSS Variables ---- */
[data-theme="dark"] {
  --bg-app:          #0d1117;
  --bg-topbar:       #161b22;
  --bg-panel:        #1c2128;
  --bg-panel-hdr:    #21262d;
  --bg-editor:       #0d1117;
  --bg-btn:          #21262d;
  --bg-btn-hover:    #30363d;
  --bg-dropdown:     #161b22;
  --border:          rgba(240,246,252,0.1);
  --text-primary:    #e6edf3;
  --text-secondary:  #8b949e;
  --text-muted:      #656d76;
  --accent:          #00d4ff;
  --accent-glow:     rgba(0,212,255,0.18);
  --accent2:         #7c3aed;
  --html-color:      #f97316;
  --css-color:       #60a5fa;
  --js-color:        #facc15;
  --shadow:          0 8px 32px rgba(0,0,0,0.5);
  --shadow-sm:       0 2px 8px rgba(0,0,0,0.4);
}

[data-theme="light"] {
  --bg-app:          #f6f8fa;
  --bg-topbar:       #ffffff;
  --bg-panel:        #ffffff;
  --bg-panel-hdr:    #f6f8fa;
  --bg-editor:       #ffffff;
  --bg-btn:          #f6f8fa;
  --bg-btn-hover:    #eaeef2;
  --bg-dropdown:     #ffffff;
  --border:          #d0d7de;
  --text-primary:    #1f2328;
  --text-secondary:  #656d76;
  --text-muted:      #9198a1;
  --accent:          #0969da;
  --accent-glow:     rgba(9,105,218,0.12);
  --accent2:         #7c3aed;
  --html-color:      #ea580c;
  --css-color:       #2563eb;
  --js-color:        #ca8a04;
  --shadow:          0 8px 32px rgba(0,0,0,0.1);
  --shadow-sm:       0 2px 8px rgba(0,0,0,0.06);
}

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

html { height: 100%; overflow: hidden; }
body {
  min-height: 100%;
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg-app);
  color: var(--text-primary);
  overflow-x: hidden;
  overflow-y: auto; /* scrollable so SEO section below editor is reachable */
  transition: background 0.25s, color 0.25s;
}

/* ============================================================
   TOP BAR
   ============================================================ */
.topbar {
  height: 52px;
  background: var(--bg-topbar);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 12px;
  z-index: 100;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.topbar-left  { flex: 0 0 auto; }
.topbar-center { flex: 1; display: flex; justify-content: center; }
.topbar-right { flex: 0 0 auto; display: flex; align-items: center; gap: 6px; }

/* Logo */
.logo {
  display: flex; align-items: center; gap: 7px;
  font-size: 18px; font-weight: 700; letter-spacing: -0.5px;
  user-select: none;
}
.logo-icon { font-size: 22px; }
.logo-accent { color: var(--accent); }

/* ---- Tabs ---- */
.tabs {
  display: flex; gap: 3px;
  background: var(--bg-app);
  padding: 3px; border-radius: 10px;
  border: 1px solid var(--border);
}
.tab {
  padding: 5px 16px; border-radius: 7px; border: none;
  background: transparent; color: var(--text-secondary);
  font-size: 13px; font-weight: 500; cursor: pointer;
  display: flex; align-items: center; gap: 6px;
  transition: all 0.2s; font-family: 'Inter', sans-serif;
}
.tab:hover { background: var(--bg-btn-hover); color: var(--text-primary); }
.tab.active { background: var(--bg-topbar); color: var(--text-primary); box-shadow: var(--shadow-sm); }
.tab-dot  { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.html-dot { background: var(--html-color); }
.css-dot  { background: var(--css-color); }
.js-dot   { background: var(--js-color); }

/* ---- Buttons ---- */
.btn {
  padding: 6px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg-btn);
  color: var(--text-primary); font-size: 12px; font-weight: 500;
  cursor: pointer; display: flex; align-items: center; gap: 5px;
  transition: all 0.2s; font-family: 'Inter', sans-serif;
  white-space: nowrap;
}
.btn:hover { background: var(--bg-btn-hover); border-color: var(--accent); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: transparent; color: #fff; font-weight: 600;
  box-shadow: 0 0 18px var(--accent-glow);
}
.btn-primary:hover { box-shadow: 0 0 28px var(--accent-glow); border-color: transparent; }

.btn-icon { width: 34px; height: 34px; padding: 0; justify-content: center; font-size: 16px; }
.btn-ghost  { background: transparent; border-color: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--bg-btn-hover); color: var(--text-primary); border-color: var(--border); }
.btn-sm { padding: 4px 9px; font-size: 11px; }
.btn-inline {
  background: none; border: none; color: var(--accent);
  cursor: pointer; font-family: 'Inter', sans-serif;
  font-size: 11px; font-weight: 600; padding: 0 3px;
}

/* ============================================================
   MAIN LAYOUT
   ============================================================ */
.main {
  display: flex;
  height: calc(100vh - 52px - 28px);
  overflow: hidden;
}
.main.stacked { flex-direction: column; }

/* ============================================================
   PANELS
   ============================================================ */
.panel { display: flex; flex-direction: column; overflow: hidden; min-width: 80px; min-height: 60px; }
.editor-panel { flex: 1; border-right: 1px solid var(--border); }
.preview-panel { flex: 1; }
.stacked .editor-panel { border-right: none; border-bottom: 1px solid var(--border); }

.panel-header {
  height: 36px; background: var(--bg-panel-hdr);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 10px; gap: 6px;
  flex-shrink: 0;
}
.panel-title {
  font-size: 11px; font-weight: 600; letter-spacing: 0.6px;
  text-transform: uppercase; color: var(--text-secondary); flex: 1;
}
.panel-actions { display: flex; align-items: center; gap: 4px; }

/* Editor Wrappers */
.editor-wrapper { flex: 1; overflow: hidden; display: flex; flex-direction: column; }
.editor-wrapper.hidden { display: none; }

/* ============================================================
   CODEMIRROR OVERRIDES
   ============================================================ */
.CodeMirror {
  height: 100% !important;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace !important;
  font-size: 14px;
  line-height: 1.65;
}
.CodeMirror-scroll { padding-bottom: 60px; }

/* Dark token colors */
[data-theme="dark"] .CodeMirror           { background: #0d1117 !important; color: #e6edf3 !important; }
[data-theme="dark"] .CodeMirror-gutters   { background: #161b22 !important; border-right: 1px solid rgba(240,246,252,0.08) !important; }
[data-theme="dark"] .CodeMirror-linenumber{ color: #6e7681 !important; }
[data-theme="dark"] .CodeMirror-cursor    { border-left: 2px solid #00d4ff !important; }
[data-theme="dark"] .CodeMirror-selected  { background: rgba(0,212,255,0.13) !important; }
[data-theme="dark"] .CodeMirror-activeline-background { background: rgba(255,255,255,0.025) !important; }
[data-theme="dark"] .cm-keyword   { color: #ff7b72 !important; }
[data-theme="dark"] .cm-string    { color: #a5d6ff !important; }
[data-theme="dark"] .cm-string-2  { color: #a5d6ff !important; }
[data-theme="dark"] .cm-comment   { color: #8b949e !important; font-style: italic !important; }
[data-theme="dark"] .cm-number    { color: #79c0ff !important; }
[data-theme="dark"] .cm-atom      { color: #79c0ff !important; }
[data-theme="dark"] .cm-def       { color: #d2a8ff !important; }
[data-theme="dark"] .cm-variable  { color: #e6edf3 !important; }
[data-theme="dark"] .cm-variable-2{ color: #79c0ff !important; }
[data-theme="dark"] .cm-property  { color: #79c0ff !important; }
[data-theme="dark"] .cm-attribute { color: #79c0ff !important; }
[data-theme="dark"] .cm-qualifier { color: #d2a8ff !important; }
[data-theme="dark"] .cm-builtin   { color: #ffa657 !important; }
[data-theme="dark"] .cm-tag       { color: #7ee787 !important; }
[data-theme="dark"] .cm-bracket   { color: #e6edf3 !important; }
[data-theme="dark"] .cm-operator  { color: #ff7b72 !important; }
[data-theme="dark"] .cm-link      { color: #a5d6ff !important; }

/* Light token colors */
[data-theme="light"] .CodeMirror           { background: #ffffff !important; color: #1f2328 !important; }
[data-theme="light"] .CodeMirror-gutters   { background: #f6f8fa !important; border-right: 1px solid #d0d7de !important; }
[data-theme="light"] .CodeMirror-linenumber{ color: #9198a1 !important; }
[data-theme="light"] .CodeMirror-cursor    { border-left: 2px solid #0969da !important; }
[data-theme="light"] .CodeMirror-selected  { background: rgba(9,105,218,0.1) !important; }
[data-theme="light"] .cm-keyword   { color: #cf222e !important; }
[data-theme="light"] .cm-string    { color: #0a3069 !important; }
[data-theme="light"] .cm-comment   { color: #6e7781 !important; font-style: italic !important; }
[data-theme="light"] .cm-number    { color: #0550ae !important; }
[data-theme="light"] .cm-variable  { color: #1f2328 !important; }
[data-theme="light"] .cm-variable-2{ color: #0550ae !important; }
[data-theme="light"] .cm-tag       { color: #116329 !important; }
[data-theme="light"] .cm-attribute { color: #0550ae !important; }
[data-theme="light"] .cm-def       { color: #8250df !important; }

/* Fold gutter */
.CodeMirror-foldgutter-open,
.CodeMirror-foldgutter-folded { padding: 0 4px; cursor: pointer; color: var(--text-muted) !important; }

/* ============================================================
   RESIZER
   ============================================================ */
.resizer {
  width: 4px; background: var(--border);
  cursor: col-resize; flex-shrink: 0;
  transition: background 0.2s; position: relative;
}
.resizer::after {
  content: ''; position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 2px; height: 40px; border-radius: 99px;
  background: var(--text-muted); opacity: 0; transition: opacity 0.2s;
}
.resizer:hover, .resizer.dragging { background: var(--accent); }
.resizer:hover::after, .resizer.dragging::after { opacity: 1; }
.stacked .resizer { width: 100%; height: 4px; cursor: row-resize; }
.stacked .resizer::after { width: 40px; height: 2px; }

/* ============================================================
   PREVIEW
   ============================================================ */
.preview-wrapper {
  flex: 1; display: flex; align-items: center; justify-content: center;
  background: var(--bg-editor); overflow: hidden; position: relative;
}
#preview { width: 100%; height: 100%; border: none; background: #fff; transition: width 0.3s, height 0.3s; }

.preview-wrapper.device-tablet #preview {
  width: 768px; height: 95%; border-radius: 10px;
  box-shadow: var(--shadow); border: 2px solid var(--border);
}
.preview-wrapper.device-mobile #preview {
  width: 390px; height: 90%; border-radius: 14px;
  box-shadow: var(--shadow); border: 3px solid var(--border);
}

.device-btns  { display: flex; gap: 2px; }
.device-btn.active { background: var(--bg-btn-hover) !important; color: var(--accent) !important; border-color: var(--accent) !important; }

/* ============================================================
   TEMPLATES DROPDOWN
   ============================================================ */
.templates-dropdown { position: relative; }
.dropdown-menu {
  display: none; position: absolute; top: calc(100% + 6px); left: 0;
  background: var(--bg-dropdown); border: 1px solid var(--border);
  border-radius: 10px; min-width: 190px; z-index: 300;
  box-shadow: var(--shadow); animation: slideDown 0.15s ease; overflow: hidden;
}
.dropdown-menu.open { display: block; }
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.dropdown-header {
  padding: 8px 14px 6px; font-size: 10px; font-weight: 600;
  letter-spacing: 0.8px; text-transform: uppercase;
  color: var(--text-muted); border-bottom: 1px solid var(--border);
}
.dropdown-menu button {
  display: block; width: 100%; padding: 9px 14px;
  background: none; border: none; color: var(--text-primary);
  font-size: 13px; font-family: 'Inter', sans-serif;
  cursor: pointer; text-align: left; transition: background 0.15s;
}
.dropdown-menu button:hover { background: var(--bg-btn-hover); color: var(--accent); }

/* ============================================================
   STATUS BAR
   ============================================================ */
.statusbar {
  height: 28px; background: var(--bg-topbar); border-top: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 14px; gap: 0;
  font-size: 11px; color: var(--text-muted); user-select: none;
}
.sep { margin: 0 10px; opacity: 0.35; }

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed; bottom: 44px; left: 50%;
  transform: translateX(-50%) translateY(14px);
  background: var(--bg-dropdown); border: 1px solid var(--border);
  color: var(--text-primary); padding: 9px 20px; border-radius: 10px;
  font-size: 13px; font-weight: 500; box-shadow: var(--shadow);
  z-index: 9999; opacity: 0; pointer-events: none;
  transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1); white-space: nowrap;
}
.toast.show  { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.success { border-color: #36d399; color: #36d399; }
.toast.error   { border-color: #f87171; color: #f87171; }
.toast.info    { border-color: var(--accent); color: var(--accent); }

/* Preview flash on update */
@keyframes flashBorder {
  0%   { box-shadow: inset 0 0 0 2px var(--accent); }
  100% { box-shadow: none; }
}
.flash { animation: flashBorder 0.35s ease; }

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================================
   RESPONSIVE (Mobile Overhaul: Full-Screen Toggled View)
   ============================================================ */
.mobile-back-btn { display: none; margin-right: 8px; }

@media (max-width: 720px) {
  .logo-text { display: none; }
  .tabs .tab { padding: 4px 8px; font-size: 11px; }
  .topbar-right .btn span:not(:first-child) { display: none; }
  .topbar-right { gap: 4px; }
  #layout-btn { display: none; }
  #templates-btn span:last-child { display: none; }
  
  .resizer { display: none; }
  .main { flex-direction: column; }
  
  /* Default Mobile State: Full Editor, No Preview */
  .main:not(.show-preview-mobile) #editor-panel { flex: 1; height: 100%; border-right: none; }
  .main:not(.show-preview-mobile) #preview-panel { display: none !important; }

  /* Active Preview State: No Editor, Full Preview */
  .main.show-preview-mobile #editor-panel { display: none !important; }
  .main.show-preview-mobile #preview-panel { display: flex !important; height: 100%; flex: 1; }
  .main.show-preview-mobile .mobile-back-btn { display: flex; }
}

/* ============================================================
   SEO CONTENT SECTION
   ============================================================ */
.seo-section {
  background: var(--bg-topbar);
  border-top: 3px solid var(--accent);
  padding: 80px 24px 60px;
  font-family: 'Inter', sans-serif;
}
.seo-inner { max-width: 960px; margin: 0 auto; }

/* Hero */
.seo-hero { text-align: center; margin-bottom: 60px; }
.seo-hero h1 {
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}
.seo-lead {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 24px;
  line-height: 1.75;
}
.seo-back {
  display: inline-block;
  padding: 8px 20px;
  background: var(--bg-btn);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
}
.seo-back:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-2px); }

/* Feature Grid */
.seo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 64px;
}
@media (max-width: 720px) { .seo-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 480px) { .seo-grid { grid-template-columns: 1fr; } }
.seo-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  transition: border-color 0.2s, transform 0.2s;
}
.seo-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.seo-icon { font-size: 28px; display: block; margin-bottom: 12px; }
.seo-card h3 { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.seo-card p  { font-size: 13px; color: var(--text-secondary); line-height: 1.65; }

/* About text */
.seo-about { margin-bottom: 64px; }
.seo-about h2 {
  font-size: 22px; font-weight: 700;
  color: var(--text-primary);
  margin: 36px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.seo-about h2:first-child { margin-top: 0; }
.seo-about p  { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 14px; }
.seo-about strong { color: var(--accent); font-weight: 600; }

/* FAQ */
.seo-faq { margin-bottom: 60px; }
.seo-faq > h2 {
  font-size: 26px; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 28px;
}
.faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-item h3 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 10px; }
.faq-item p  { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }
.faq-item strong { color: var(--text-primary); }

/* Footer note */
.seo-footer-note {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  line-height: 2.2;
}
.seo-footer-note strong { color: var(--text-secondary); }
.seo-tags a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.seo-tags a:hover { color: var(--accent); }