:root{
  --bg: #f4f6fb;
  --panel: #ffffff;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-600: #1e4fcf;
  --surface: #f8fafc;
  --glass: rgba(255,255,255,0.7);
  --text: #0f172a;
  --muted-2: rgba(15,23,42,0.45);
}

/* Dark theme overrides */
:[data-theme="dark"], [data-theme="dark"] * {
  --bg: #081226;
  --panel: #071022;
  --surface: #071326;
  --muted: #9aa6bf;
  --accent: #3aa0ff;
  --accent-600: #2b8fe6;
  --glass: rgba(255,255,255,0.03);
  --text: #e6eef9;
  --muted-2: rgba(255,255,255,0.6);
}

*{box-sizing:border-box}
#app *{transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .12s ease}
html,body,#app{height:100%;margin:0;font-family:Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;background:var(--bg);color:var(--text)}
#app{display:flex;min-height:100vh}

/* Sidebar */
aside#sidebar{width:320px;background:linear-gradient(180deg,var(--panel),var(--surface));border-right:0;display:flex;flex-direction:column;padding:12px;gap:10px}
.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:6px 8px}
.sidebar-header h1{font-size:20px;margin:0;color:var(--text)}
.controls button{margin-left:8px;padding:8px 10px;border-radius:10px;border:0;background:transparent;color:var(--accent);cursor:pointer;font-weight:600}

#search{margin:0;padding:10px;border-radius:12px;border:1px solid rgba(15,23,42,0.06);background:#fff;box-shadow:0 1px 2px rgba(16,24,40,0.04)}

#notes-list{list-style:none;margin:0;padding:6px;overflow:auto;flex:1}
#notes-list li{padding:12px 14px;border-radius:10px;margin-bottom:6px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;background:transparent;transition:all .15s ease}
#notes-list li:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(16,24,40,0.06);background:#fff}
#notes-list li.active{background:linear-gradient(90deg,#eef5ff,#ffffff);border-left:4px solid var(--accent);padding-left:12px}
#notes-list li .meta{display:flex;flex-direction:column}
.muted{color:var(--muted);font-size:12px}

/* Editor area */
main#editor-area{flex:1;display:flex;flex-direction:column;padding:18px;gap:12px}
#editor-toolbar{display:flex;align-items:center;padding:10px;border-radius:12px;background:linear-gradient(180deg,#ffffff,#fbfdff);box-shadow:0 6px 18px rgba(16,24,40,0.04)}
.note-input, #note-title{flex:1;padding:10px 12px;border-radius:10px;border:1px solid rgba(15,23,42,0.06);font-size:16px;background:var(--panel);color:var(--text)}
.toolbar-buttons{display:flex;align-items:center;margin-left:12px;gap:8px}
.toolbar-buttons button{padding:8px 10px;border-radius:10px;border:0;background:var(--panel);cursor:pointer;color:#0b1220;box-shadow:0 2px 6px rgba(16,24,40,0.04);transition:transform .12s ease, box-shadow .12s}
.toolbar-buttons button:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(16,24,40,0.06)}

/* Font controls (select + color) */
.font-controls{display:flex;align-items:center;gap:8px;margin-left:12px}
.font-controls select, .font-controls input[type="color"]{padding:8px;border-radius:8px;border:1px solid rgba(15,23,42,0.06);background:var(--panel);cursor:pointer}
.font-controls select{font-size:14px}
.font-controls input[type="color"]{width:38px;height:38px;padding:4px;border-radius:8px}

#editor{flex:1;padding:20px;border-radius:12px;border:0;outline:0;font-size:15px;line-height:1.6;background:var(--panel);resize:none;box-shadow:0 6px 24px rgba(16,24,40,0.06);min-height:320px;color:var(--text)}
#status{color:var(--muted);font-size:13px;margin-left:8px}

/* stickers: overlay and items */
.main#editor-area{position:relative}
#sticker-layer, .sticker-layer{position:absolute;left:0;top:0;right:0;bottom:0;pointer-events:none}
.sticker{position:absolute;display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:12px;background:linear-gradient(180deg,#fff,#fbfdff);box-shadow:0 10px 30px rgba(16,24,40,0.08);cursor:grab;user-select:none;font-size:26px;pointer-events:auto;border:1px solid rgba(15,23,42,0.04)}
.sticker:active{cursor:grabbing}

/* sticker remove button */
.sticker .remove-btn{position:absolute;right:-10px;top:-10px;width:22px;height:22px;border-radius:50%;background:#ff5a5f;color:#fff;border:0;display:inline-flex;align-items:center;justify-content:center;font-size:12px;cursor:pointer;box-shadow:0 4px 10px rgba(0,0,0,0.12)}
.sticker .remove-btn:active{transform:scale(0.95)}

/* Palette */
#sticker-palette{position:fixed;right:20px;bottom:20px;width:260px;background:var(--panel);border-radius:12px;box-shadow:0 18px 50px rgba(16,24,40,0.14);z-index:9999;padding:12px}
.hidden{display:none}
.palette-header{display:flex;justify-content:space-between;align-items:center;font-weight:700;padding:6px 8px}
.stickers-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding-top:6px}
.sticker-btn{padding:10px;border-radius:10px;border:0;background:linear-gradient(180deg,#fff,#f8fbff);font-size:20px;cursor:pointer;box-shadow:0 6px 18px rgba(16,24,40,0.06)}

/* Debug panel */
#debug-panel{position:fixed;left:20px;bottom:20px;width:360px;height:220px;background:rgba(20,20,20,0.95);color:#fff;border-radius:8px;padding:8px;z-index:10000;overflow:auto}
#debug-panel pre{white-space:pre-wrap;font-size:12px}
#debug-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
#debug-close{background:transparent;color:#fff;border:0;cursor:pointer}

/* responsive adjustments */
@media (max-width:900px){aside#sidebar{width:260px}}
@media (max-width:720px){
  aside#sidebar{display:none}
  #app{flex-direction:column}
  #editor-toolbar{position:fixed;left:0;right:0;bottom:0;padding:8px;margin:0;z-index:999}
  #editor{padding-bottom:86px}
  #sticker-palette{right:12px;bottom:72px}
}

/* subtle custom scrollbar for desktop */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,rgba(15,23,42,0.12),rgba(15,23,42,0.08));border-radius:8px}

/* Toast (autosave) */
#toast{position:fixed;right:20px;bottom:96px;background:rgba(2,6,23,0.9);color:#fff;padding:8px 12px;border-radius:10px;font-size:13px;box-shadow:0 6px 22px rgba(2,6,23,0.5);opacity:0;transform:translateY(8px);transition:opacity .22s,transform .22s;z-index:12000}
#toast.show{opacity:1;transform:translateY(0)}

/* make buttons visually consistent */
.button { display:inline-flex; align-items:center; gap:8px; padding:8px 10px; border-radius:10px; border:0; background:transparent; cursor:pointer }
.button.primary{background:linear-gradient(90deg,var(--primary),var(--accent)); color:#fff}
/* disabled */
.button[disabled]{opacity:0.45;cursor:not-allowed;transform:none;box-shadow:none}