/* ===================================================================
   HTML Compiler — Enterprise Design System
   =================================================================== */

/* ===== CSS Custom Properties (Design Tokens) ===== */
:root {
  /* Backgrounds */
  --body-bg:          #0f0f1a;
  --navbar-bg:        #13131f;
  --navbar-border:    #1f1f30;
  --editor-bg:        #0b0b14;
  --panel-header-bg:  #111120;
  --panel-border:     #1e1e30;
  --resizer-bg:       #1a1a28;
  --resizer-hover:    #04AA6D;
  --preview-header-bg:#111120;

  /* Text */
  --editor-color:     #e2e2f0;
  --navt-color:       #9090b0;
  --brand-color:      #e8e8f8;
  --muted-color:      #606080;
  --placeholder-color:#3a3a5a;

  /* Accent */
  --accent:           #04AA6D;
  --accent-hover:     #02c47e;
  --accent-muted:     rgba(4, 170, 109, 0.12);

  /* Borders */
  --border-subtle:    rgba(255, 255, 255, 0.05);
  --border-normal:    rgba(255, 255, 255, 0.09);

  /* Scrollbar */
  --scrollbar-track:  #0b0b14;
  --scrollbar-thumb:  #2a2a42;
  --scrollbar-hover:  #3a3a56;

  /* Shadows */
  --shadow-navbar:    0 1px 0 var(--navbar-border), 0 4px 16px rgba(0,0,0,0.5);
  --shadow-panel:     inset -1px 0 0 var(--panel-border);

  /* Status bar */
  --statusbar-bg:     #0d0d1a;
  --statusbar-border: #1a1a2c;
  --statusbar-color:  #6060a0;

  /* Transitions */
  --transition-fast:  0.15s ease;
  --transition-med:   0.25s ease;
  --transition-slow:  0.35s ease;

  /* Sizing */
  --navbar-height:    52px;
  --panel-header-h:   32px;
  --preview-header-h: 32px;
  --statusbar-h:      24px;
  --resizer-w:        5px;
}

/* Light-mode overrides */
body.light-mode {
  --body-bg:          #f0f2f7;
  --navbar-bg:        #ffffff;
  --navbar-border:    #e0e2ec;
  --editor-bg:        #f8f9fd;
  --panel-header-bg:  #edeef5;
  --panel-border:     #dddee8;
  --resizer-bg:       #d8dae6;
  --preview-header-bg:#edeef5;

  --editor-color:     #1a1a30;
  --navt-color:       #5a5a7a;
  --brand-color:      #1a1a30;
  --muted-color:      #8888aa;
  --placeholder-color:#aaaacc;

  --border-subtle:    rgba(0, 0, 0, 0.05);
  --border-normal:    rgba(0, 0, 0, 0.09);

  --scrollbar-track:  #e8eaf4;
  --scrollbar-thumb:  #c0c2d4;
  --scrollbar-hover:  #a0a2be;

  --shadow-navbar:    0 1px 0 var(--navbar-border), 0 2px 12px rgba(0,0,0,0.08);
  --statusbar-bg:     #e4e6f0;
  --statusbar-border: #d4d6e4;
  --statusbar-color:  #7070a0;
}

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

/* ===== Scrollbars ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-hover); }
* { scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track); scrollbar-width: thin; }

/* ===== Base ===== */
body {
  background-color: var(--body-bg);
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  transition: background-color var(--transition-slow);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.main {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ===== Navbar ===== */
.navbar {
  width: 100%;
  height: var(--navbar-height);
  background-color: var(--navbar-bg);
  box-shadow: var(--shadow-navbar);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
  transition: background-color var(--transition-slow);
  z-index: 10;
}

.navchild {
  width: 97%;
  max-width: 1600px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  gap: 0;
}

/* Divider */
.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--border-normal);
  flex-shrink: 0;
  margin: 0 14px;
}

/* ===== Brand ===== */
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  text-decoration: none;
}

.brand-logo {
  flex-shrink: 0;
}

.brand-name {
  color: var(--brand-color);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.1px;
  white-space: nowrap;
  transition: color var(--transition-slow);
}

/* ===== Nav toggle items ===== */
.main-nav {
  display: flex;
  flex-direction: row;
  gap: 20px;
  justify-content: center;
  align-items: center;
  flex: 1;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.nav-item-label {
  color: var(--navt-color);
  font-size: 10px;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  letter-spacing: 0.2px;
  white-space: nowrap;
  cursor: default;
  user-select: none;
  transition: color var(--transition-slow);
}

.checkwrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Toggle switch */
.check {
  display: inline-block;
  height: 16px;
  position: relative;
  width: 30px;
  flex-shrink: 0;
}

.check input { display: none; }

.slider {
  background-color: var(--resizer-bg);
  border: 1px solid var(--border-normal);
  bottom: 0;
  cursor: pointer;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.slider:before {
  background-color: #8888aa;
  bottom: 2px;
  content: "";
  height: 10px;
  left: 2px;
  position: absolute;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
  width: 10px;
}

input:checked + .slider {
  background-color: var(--accent-muted);
  border-color: var(--accent);
}

input:checked + .slider:before {
  background-color: var(--accent);
  transform: translateX(14px);
}

.slider.round { border-radius: 16px; }
.slider.round:before { border-radius: 50%; }

/* Per-toggle accent colors — each reflects its purpose */
/* Live Preview: green (run / play) */
#live:checked + .slider        { background-color: rgba(4,170,109,0.15); border-color: #04AA6D; }
#live:checked + .slider:before { background-color: #04AA6D; }

/* Orientation: violet (layout / direction) */
#orientation:checked + .slider        { background-color: rgba(124,106,247,0.15); border-color: #7c6af7; }
#orientation:checked + .slider:before { background-color: #7c6af7; }

/* Light Mode: amber (sun / brightness) */
#theme:checked + .slider        { background-color: rgba(245,158,11,0.18); border-color: #f59e0b; }
#theme:checked + .slider:before { background-color: #f59e0b; }

/* Split Editor: sky blue (columns / split) */
#split:checked + .slider        { background-color: rgba(56,189,248,0.15); border-color: #38bdf8; }
#split:checked + .slider:before { background-color: #38bdf8; }

/* Active toggle label tint — color matches its toggle */
.nav-item:has(#live:checked)        .nav-item-label { color: #04AA6D; }
.nav-item:has(#orientation:checked) .nav-item-label { color: #7c6af7; }
.nav-item:has(#theme:checked)       .nav-item-label { color: #f59e0b; }
.nav-item:has(#split:checked)       .nav-item-label { color: #38bdf8; }

/* Light-mode toggle overrides — darker shades for contrast on white navbar */
body.light-mode #live:checked + .slider        { background-color: rgba(5,150,105,0.14);  border-color: #059669; }
body.light-mode #live:checked + .slider:before { background-color: #059669; }

body.light-mode #theme:checked + .slider        { background-color: rgba(217,119,6,0.15); border-color: #d97706; }
body.light-mode #theme:checked + .slider:before { background-color: #d97706; }

body.light-mode #split:checked + .slider        { background-color: rgba(2,132,199,0.14);  border-color: #0284c7; }
body.light-mode #split:checked + .slider:before { background-color: #0284c7; }

body.light-mode .nav-item:has(#live:checked)  .nav-item-label { color: #059669; }
body.light-mode .nav-item:has(#theme:checked) .nav-item-label { color: #d97706; }
body.light-mode .nav-item:has(#split:checked) .nav-item-label { color: #0284c7; }

/* ===== Action Buttons ===== */
.action-nav {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

/* Run button (primary CTA) */
.btn-run {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #ffffff;
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  letter-spacing: 0.1px;
  background: linear-gradient(135deg, #04AA6D 0%, #02c47e 100%);
  cursor: pointer;
  padding: 6px 14px;
  border-radius: 6px;
  border: none;
  box-shadow: 0 2px 8px rgba(4, 170, 109, 0.3);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.btn-run:hover {
  background: linear-gradient(135deg, #02c47e 0%, #00d88e 100%);
  box-shadow: 0 4px 14px rgba(4, 170, 109, 0.45);
  transform: translateY(-1px);
}

.btn-run:active {
  transform: translateY(0) scale(0.97);
  box-shadow: 0 1px 4px rgba(4, 170, 109, 0.3);
}

.btn-run:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Keyboard hint badge inside run button */
.kbd-hint {
  font-family: 'Inter', monospace;
  font-size: 9px;
  font-weight: 500;
  padding: 1px 5px;
  border-radius: 3px;
  background: rgba(255,255,255,0.18);
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.2px;
  white-space: nowrap;
}

/* Save button (secondary) */
.btn-save {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--navt-color);
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  background: transparent;
  border: 1px solid var(--border-normal);
  cursor: pointer;
  padding: 5px 12px;
  border-radius: 6px;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.btn-save:hover {
  background: var(--border-subtle);
  color: var(--brand-color);
  border-color: var(--accent);
}

.btn-save:active { transform: scale(0.97); }

.btn-save:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Icon-only buttons */
.btn-icon-only {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-normal);
  color: var(--muted-color);
  cursor: pointer;
  width: 30px;
  height: 30px;
  border-radius: 6px;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  padding: 0;
  flex-shrink: 0;
}

.btn-icon-only:hover {
  background: var(--border-subtle);
  color: var(--brand-color);
  border-color: var(--border-normal);
}

.btn-icon-only:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-close-full {
  display: none;
}

.btn-close-full:hover {
  background: rgba(239, 68, 68, 0.12);
  color: #ef4444;
  border-color: #ef4444;
}

/* ===== Compiler layout ===== */
.compiler {
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: row;
  overflow: hidden;
  min-height: 0;
  gap: 0;
}

/* ===== Editor column ===== */
.editor {
  width: 48%;
  height: 100%;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  min-width: 180px;
}

/* ===== Panel wrapper ===== */
.panel-wrap {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  width: 100%;
  height: 100%;
  border-right: 1px solid var(--panel-border);
  transition: border-color var(--transition-slow);
}

/* ===== Panel header ===== */
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--panel-header-h);
  padding: 0 10px 0 12px;
  flex-shrink: 0;
  background-color: var(--panel-header-bg);
  border-bottom: 1px solid var(--panel-border);
  transition: background-color var(--transition-slow);
}

.panel-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.panel-header-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.panel-filename {
  font-family: 'JetBrains Mono', 'Consolas', monospace;
  font-size: 11px;
  color: var(--muted-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition-slow);
}

/* Panel action buttons (copy, clear, reload) */
.panel-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--muted-color);
  cursor: pointer;
  width: 22px;
  height: 22px;
  border-radius: 4px;
  padding: 0;
  transition: background var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.panel-action-btn:hover {
  background: var(--border-subtle);
  color: var(--editor-color);
}

.panel-action-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* Semantic hover tints for panel action buttons */
.panel-action-copy:hover   { background: rgba(56,189,248,0.12);  color: #38bdf8; }
.panel-action-clear:hover  { background: rgba(239,68,68,0.12);   color: #ef4444; }
.panel-action-reload:hover { background: rgba(4,170,109,0.12);   color: #04AA6D; }

/* Light-mode overrides — darker shades for contrast on light panel headers */
body.light-mode .panel-action-copy:hover   { background: rgba(2,132,199,0.10);  color: #0284c7; }
body.light-mode .panel-action-clear:hover  { background: rgba(220,38,38,0.10);  color: #dc2626; }
body.light-mode .panel-action-reload:hover { background: rgba(5,150,105,0.10);  color: #059669; }

/* ===== Language badges ===== */
.lang-badge {
  font-family: 'Inter', monospace;
  font-size: 9px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  flex-shrink: 0;
}

.html-badge { background-color: rgba(228, 77, 38, 0.20); color: #f06040; border: 1px solid rgba(228,77,38,0.35); }
.css-badge  { background-color: rgba(38, 77, 228, 0.20); color: #6080f0; border: 1px solid rgba(38,77,228,0.35); }
.js-badge   { background-color: rgba(247, 223, 30, 0.18); color: #c8b800; border: 1px solid rgba(247,223,30,0.30); }

body.light-mode .html-badge { background-color: rgba(228,77,38,0.12); color: #c8401e; border-color: rgba(228,77,38,0.30); }
body.light-mode .css-badge  { background-color: rgba(38,77,228,0.10); color: #3050c8; border-color: rgba(38,77,228,0.28); }
body.light-mode .js-badge   { background-color: rgba(180,160,0,0.12); color: #807000; border-color: rgba(180,160,0,0.28); }

/* ===== Code textareas ===== */
.htmlcode,
.csscode,
.jscode {
  font-family: 'JetBrains Mono', 'Consolas', 'Courier New', monospace;
  background-color: var(--editor-bg);
  width: 100%;
  flex: 1;
  border: none;
  resize: none;
  color: var(--editor-color);
  outline: none;
  padding: 12px 10px 12px 14px;
  font-size: 13.5px;
  line-height: 1.65;
  cursor: text;
  min-height: 0;
  tab-size: 2;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

.csscode::placeholder,
.jscode::placeholder {
  color: var(--placeholder-color);
  font-style: italic;
}

/* ===== Drag-to-resize handle ===== */
.resizer {
  width: var(--resizer-w);
  height: 100%;
  background: var(--resizer-bg);
  cursor: col-resize;
  flex-shrink: 0;
  position: relative;
  transition: background var(--transition-fast);
  border-left:  1px solid var(--panel-border);
  border-right: 1px solid var(--panel-border);
}

.resizer::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1px;
  height: 32px;
  background: var(--muted-color);
  border-radius: 1px;
  opacity: 0.4;
  transition: opacity var(--transition-fast), background var(--transition-fast);
}

.resizer:hover,
.resizer.dragging {
  background: var(--accent-muted);
  border-color: var(--accent);
}

.resizer:hover::before,
.resizer.dragging::before {
  background: var(--accent);
  opacity: 0.9;
  height: 48px;
}

/* ===== Preview panel ===== */
.result {
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  min-width: 180px;
  position: relative;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--preview-header-h);
  padding: 0 10px 0 12px;
  flex-shrink: 0;
  background-color: var(--preview-header-bg);
  border-bottom: 1px solid var(--panel-border);
  transition: background-color var(--transition-slow);
}

.preview-header-left {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted-color);
}

.preview-title {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted-color);
  letter-spacing: 0.3px;
  transition: color var(--transition-slow);
}

iframe {
  border: none;
  width: 100%;
  flex: 1;
  background-color: #ffffff;
  display: block;
  min-height: 0;
}

/* ===== Fullscreen ===== */
.fullScreen1 {
  width: 100% !important;
  height: 100% !important;
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  z-index: 9999;
}

.fullScreen2 {
  width: 100% !important;
  height: 100% !important;
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  z-index: 9999;
}

.dm { display: none !important; }

/* ===== Status Bar ===== */
.status-bar {
  width: 100%;
  height: var(--statusbar-h);
  background: var(--statusbar-bg);
  border-top: 1px solid var(--statusbar-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  flex-shrink: 0;
  transition: background var(--transition-slow), border-color var(--transition-slow);
  gap: 8px;
  overflow: hidden;
}

.status-left,
.status-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.status-center {
  flex: 1;
  display: flex;
  justify-content: center;
  overflow: hidden;
}

.status-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 400;
  color: var(--statusbar-color);
  white-space: nowrap;
  transition: color var(--transition-slow);
  letter-spacing: 0.1px;
}

.status-sep {
  width: 1px;
  height: 10px;
  background: var(--border-normal);
  flex-shrink: 0;
}

.status-shortcuts {
  overflow: hidden;
  text-overflow: ellipsis;
  gap: 2px;
}

/* Inline keyboard shortcut badges in status bar */
.status-bar kbd {
  font-family: 'Inter', monospace;
  font-size: 9px;
  font-weight: 500;
  padding: 1px 4px;
  border-radius: 3px;
  background: var(--border-normal);
  color: var(--statusbar-color);
  border: 1px solid var(--panel-border);
  display: inline-block;
}

/* ===== Toast Notifications ===== */
#toast-container {
  position: fixed;
  bottom: 36px;
  right: 16px;
  z-index: 99999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 500;
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  animation: toastIn 0.2s ease forwards;
  pointer-events: auto;
  max-width: 280px;
  border: 1px solid transparent;
}

.toast.success {
  background: #0d2a1e;
  border-color: rgba(4,170,109,0.4);
  color: #4cefaa;
}

.toast.error {
  background: #2a0d0d;
  border-color: rgba(239,68,68,0.4);
  color: #f87171;
}

.toast.info {
  background: #0d1a2a;
  border-color: rgba(88,166,255,0.4);
  color: #79b8ff;
}

.toast.hide {
  animation: toastOut 0.2s ease forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(6px) scale(0.96); }
}

/* ===== Responsive ===== */
@media only screen and (max-width: 600px) {
  .main {
    height: auto;
    min-height: 100vh;
  }
  .compiler {
    flex-direction: column;
    height: auto;
    overflow: visible;
  }
  .editor {
    width: 100%;
    height: 44vh;
  }
  .resizer {
    width: 100%;
    height: 5px;
    cursor: row-resize;
  }
  .resizer::before {
    width: 32px;
    height: 1px;
  }
  .result {
    height: 44vh;
  }
  .htmlcode { font-size: 15px; }
  .main-nav  { display: none; }
  .btn-save,
  .btn-icon-only { display: none; }
  .brand-name    { font-size: 13px; }
  .status-center { display: none; }
  .nav-divider   { display: none; }
}

@media only screen and (max-width: 1100px) {
  .main-nav { gap: 14px; }
  .nav-item-label { font-size: 9.5px; }
  .kbd-hint { display: none; }
}

@media only screen and (max-width: 860px) {
  .main-nav { gap: 10px; }
  .nav-item-label { font-size: 9px; }
  .status-shortcuts { display: none; }
}