/* SVG Sprite Builder — Dark theme */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #6C63FF;
  --primary-dim: rgba(108,99,255,0.12);
  --primary-glow: rgba(108,99,255,0.3);
  --secondary: #A78BFA;
  --accent: #34D399;
  --bg: #0F0A1A;
  --bg-card: #16112A;
  --bg-input: #0C0816;
  --bg-hover: #1E1735;
  --border: rgba(108,99,255,0.15);
  --border-focus: rgba(108,99,255,0.5);
  --text: #E6E0F8;
  --text-dim: #9B90B8;
  --text-muted: #5A4E78;
  --green: #34D399;
  --red: #F87171;
  --red-dim: rgba(248,113,113,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --transition: 0.2s ease;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); background: var(--bg); color: var(--text); min-height: 100vh; line-height: 1.6; }
body::before { content: ''; position: fixed; inset: 0; background: radial-gradient(ellipse at top, rgba(108,99,255,0.05), transparent 50%); pointer-events: none; }

.header { border-bottom: 1px solid var(--border); background: rgba(22,17,42,0.9); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 10; }
.header-inner { max-width: 1200px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; }
.header-left { display: flex; align-items: center; gap: 10px; }
.logo-icon { font-size: 1.2rem; width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; background: var(--primary-dim); border-radius: var(--radius-sm); }
.header h1 { font-size: 1.05rem; font-weight: 700; }
.subtitle { font-size: 0.72rem; color: var(--text-dim); }
.header-actions { display: flex; gap: 6px; }

.btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; font-family: var(--font); font-size: 0.8rem; font-weight: 500; border: none; border-radius: 6px; cursor: pointer; transition: all var(--transition); }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-primary { background: linear-gradient(135deg, var(--primary), #5B52E0); color: white; font-weight: 600; }
.btn-primary:hover { box-shadow: 0 4px 16px var(--primary-glow); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text-dim); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--primary); background: var(--primary-dim); }
.btn-sm { padding: 5px 10px; font-size: 0.78rem; }

.main { max-width: 1200px; margin: 0 auto; padding: 20px; }
.layout { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; min-height: calc(100vh - 100px); }

.icons-panel, .output-panel { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); display: flex; flex-direction: column; overflow: hidden; }
.panel-header { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid var(--border); }
.panel-label { font-size: 0.75rem; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; }
.icon-count { font-size: 0.72rem; color: var(--text-muted); font-family: var(--mono); }

.drop-zone { margin: 10px; padding: 28px; border: 2px dashed var(--border); border-radius: var(--radius); text-align: center; cursor: pointer; transition: all var(--transition); }
.drop-zone:hover, .drop-zone.drag-over { border-color: var(--primary); background: var(--primary-dim); }
.drop-text { font-size: 0.82rem; color: var(--text-dim); }
.drop-text strong { color: var(--primary); }

.icon-grid { flex: 1; overflow-y: auto; padding: 10px; display: grid; grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); gap: 8px; }
.icon-card { background: var(--bg); border: 1px solid rgba(108,99,255,0.08); border-radius: var(--radius-sm); padding: 10px; text-align: center; position: relative; transition: all var(--transition); }
.icon-card:hover { border-color: rgba(108,99,255,0.3); }
.icon-card svg { width: 32px; height: 32px; fill: var(--text); }
.icon-card .name { font-size: 0.65rem; color: var(--text-muted); margin-top: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.icon-card .remove-btn { position: absolute; top: 2px; right: 2px; background: none; border: none; color: var(--red); font-size: 0.7rem; cursor: pointer; opacity: 0; transition: opacity var(--transition); padding: 2px 4px; border-radius: 4px; }
.icon-card:hover .remove-btn { opacity: 1; }
.icon-card .remove-btn:hover { background: var(--red-dim); }

.output-code { flex: 1; padding: 14px; font-family: var(--mono); font-size: 0.76rem; line-height: 1.7; color: var(--text-dim); overflow: auto; white-space: pre-wrap; word-break: break-all; background: var(--bg-input); margin: 0; min-height: 200px; }

.snippets { padding: 10px; flex: 1; overflow-y: auto; }
.snippet-item { background: var(--bg); border: 1px solid rgba(108,99,255,0.08); border-radius: 6px; padding: 8px 10px; margin-bottom: 6px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.snippet-code { font-family: var(--mono); font-size: 0.72rem; color: var(--accent); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.snippet-copy { background: none; border: none; color: var(--text-dim); cursor: pointer; font-size: 0.72rem; padding: 2px 6px; border-radius: 4px; transition: all var(--transition); }
.snippet-copy:hover { background: var(--primary-dim); color: var(--primary); }

.toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 200; display: flex; flex-direction: column-reverse; gap: 8px; }
.toast { padding: 10px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); box-shadow: var(--shadow); font-size: 0.82rem; animation: toastIn 0.3s ease; }
@keyframes toastIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 768px) {
  .layout { grid-template-columns: 1fr; }
  .icon-grid { grid-template-columns: repeat(auto-fill, minmax(60px, 1fr)); }
}