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

/* ----------  ROOT VARIABLES  ---------- */
:root{
  --bg:#000;
  --surface:#111;
  --border:#333;
  --accent:#00ff00;
  --accent2:#ff6b00;
  --text:#fff;
  --text2:#888;
  --font:'Consolas','Monaco','Courier New',monospace;
  --radius:4px;
  --shadow:0 2px 8px rgba(0,0,0,.4);
}

/* ----------  GLOBAL  ---------- */
html,body{height:100%;font-family:var(--font);background:var(--bg);color:var(--text)}
body{font-size:14px;line-height:1.5;overflow:hidden}   /* allow js to handle scroll */

/* ----------  LAYOUT  ---------- */
.container{display:flex;height:100%;background:var(--bg)}
.editor-panel{width:50%;max-width:80%;min-width:200px;display:flex;flex-direction:column;border-right:1px solid var(--border)}
.preview-panel{flex:1;min-width:200px;display:flex;flex-direction:column;background:#1a1a1a}
.resize-handle{width:8px;background:var(--border);cursor:col-resize;position:relative;z-index:100;transition:background .2s}
.resize-handle:hover{background:#555}
.resize-handle::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:2px;height:30px;background:#666;border-radius:1px}
.resize-handle.resizing{background:var(--accent)}

/* ----------  HEADER (desktop & mobile)  ---------- */
.panel-header{background:var(--surface);padding:8px 12px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}
.panel-title{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:500}
.panel-title::before{content:'';width:8px;height:8px;background:var(--accent);border-radius:50%;box-shadow:0 0 4px var(--accent)}
.preview-panel .panel-title::before{background:var(--accent2);box-shadow:0 0 4px var(--accent2)}
.controls{display:flex;flex-wrap:wrap;align-items:center;gap:6px}

/* ----------  BUTTONS (same height everywhere)  ---------- */
.btn{
  padding:6px 12px;
  border-radius:var(--radius);
  border:1px solid transparent;
  background:#222;
  color:var(--text);
  font-size:12px;
  line-height:1;
  display:inline-flex;
  align-items:center;
  gap:4px;
  cursor:pointer;
  transition:all .2s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);border-color:#666;background:#333}
.btn:active{transform:translateY(0)}
.btn-primary{background:#0066cc;border-color:#0088ff}
.btn-primary:hover{background:#0088ff;border-color:#00aaff}

/* ----------  EDIT SUB-MENU  ---------- */
.edit-menu{position:relative}
.edit-dropdown{
  position:absolute;
  top:100%;left:0;
  background:#222;
  border:1px solid var(--border);
  border-radius:var(--radius);
  display:none;
  flex-direction:column;
  padding:4px 0;
  min-width:130px;
  z-index:200;
  box-shadow:var(--shadow);
}
.edit-dropdown .btn{width:100%;justify-content:flex-start;border:none;border-radius:0;margin:0}
.edit-dropdown .btn:hover{background:#0066cc}
.edit-menu:hover .edit-dropdown,
.edit-menu.open .edit-dropdown{display:flex}
#clearStorageBtn{background:#8b0000;border-color:#aa0000}
#clearStorageBtn:hover{background:#aa0000}
/* ----------  TABS  ---------- */
.tab-bar{display:flex;background:var(--surface);border-bottom:1px solid var(--border)}
.tab{padding:8px 16px;background:var(--bg);border:none;color:var(--text2);cursor:pointer;font-size:13px;border-right:1px solid var(--border);transition:all .2s}
.tab.active{color:var(--accent);border-bottom:2px solid var(--accent)}
.tab:hover{background:#222;color:var(--text)}
.tab-content{display:none;height:100%}.tab-content.active{display:block}
        .editor-container {
            flex: 1;
            position: relative;
            overflow: hidden;
        }
/* ----------  EDITOR  ---------- */
.CodeMirror{height:100%;font-size:14px;line-height:1.5;background:var(--bg)!important;color:#f8f8f2!important}
.CodeMirror-gutters{background:var(--surface)!important;border-right:1px solid var(--border)!important}
.CodeMirror-linenumber{color:#666!important;font-size:12px}
.CodeMirror-cursor{border-left:2px solid var(--accent)!important}
.CodeMirror-selected{background:#333!important}
.CodeMirror-hints{background:#1a1a1a;border:1px solid #444;border-radius:var(--radius);box-shadow:var(--shadow);font-size:13px;max-height:200px;overflow-y:auto}
.CodeMirror-hint{color:#f8f8f2;padding:4px 8px;border-radius:2px}
.CodeMirror-hint-active{background:#0066cc;color:#fff}

/* ----------  PREVIEW (desktop)  ---------- */
        .preview-frame-container {
            flex: 1;
            position: relative;
            overflow: hidden;
            background: #222;
            display: flex;
            align-items: center;
            justify-content: center;
        }
.preview-device-frame{background:#fff;box-shadow:var(--shadow);transition:all .3s ease;border-radius:8px;overflow:hidden}
.device-frame-mobile{width:375px;height:667px;border:16px solid #333;border-radius:24px}
.device-frame-tablet{width:768px;height:1024px;border:20px solid #333;border-radius:16px}
.device-frame-desktop{width:100%;height:100%;border:none;border-radius:0}
.preview-container{background:#fff;border:none;width:100%;height:100%;transition:width .3s ease}
.device-selector{background:#222;color:var(--text);border:1px solid var(--border);padding:4px 8px;border-radius:var(--radius);font-size:11px;cursor:pointer}
        .device-info {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(0, 0, 0, 0.8);
            color: #fff;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 11px;
            z-index: 10;
        }
/* ----------  STATUS  ---------- */
.status-bar{background:var(--surface);padding:6px 16px;border-top:1px solid var(--border);font-size:11px;color:var(--text2);display:flex;justify-content:space-between;align-items:center;flex-shrink:0}
.shortcuts{display:flex;gap:16px}.shortcut{display:flex;align-items:center;gap:4px}
.key{background:#222;padding:2px 6px;border-radius:3px;border:1px solid var(--border);font-family:monospace;font-size:10px}

/* ----------  COPYRIGHT  ---------- */
.copyright{position:absolute;bottom:6px;right:16px;font-size:10px;color:#666;z-index:100}
.copyright a{color:#888;transition:color .2s}.copyright a:hover{color:var(--accent)}

/* ----------  MOBILE  ---------- */
@media (max-width:768px){
  body{overflow:auto}                /* allow page scroll */
  .container{flex-direction:column;height:auto;min-height:100vh}
  .editor-panel{width:100%!important;max-width:100%!important;height:100vh;border-right:none;border-bottom:1px solid var(--border)}
  .preview-panel,#resizeHandle{display:none!important} /* hide preview & resizer */
  .panel-header{flex-wrap:wrap;height:auto;min-height:48px;padding:8px 12px}
  .controls{gap:4px}
  .btn{font-size:11px;padding:4px 8px}
  /* ensure edit menu stays on-screen */
  .edit-dropdown{left:auto;right:0}
}