:root {
  --primary: #14B8A6; --primary-hover: #0D9488; --secondary: #2DD4BF;
  --accent: #EC4899; --success: #10B981; --error: #EF4444;
  --bg: #0A1A18; --bg-elevated: #0F2520; --bg-card: #142E2A;
  --bg-input: #0C1F1C; --text: #E0F5F0; --text-muted: #80B8AF; --text-dim: #446B64;
  --border: #1E3D38; --border-hover: #2D5A52; --radius: 12px; --radius-sm: 8px;
  --font: 'Inter', system-ui, sans-serif; --mono: monospace; --transition: 200ms ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;overflow:hidden}
.app{display:flex;flex-direction:column;height:100vh}

.header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:var(--bg-elevated);border-bottom:1px solid var(--border);gap:12px;flex-shrink:0}
.header-left{display:flex;align-items:center;gap:12px}
.logo{font-size:1.3rem}
.header-title{font-size:1.05rem;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.header-right{display:flex;gap:8px;align-items:center}
.select-sm{padding:5px 10px;font-size:.72rem;font-family:var(--font);background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);cursor:pointer}

.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;font-size:.8rem;font-weight:500;font-family:var(--font);border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-hover));color:#fff;box-shadow:0 2px 8px rgba(20,184,166,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(20,184,166,.4)}
.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--bg-card);color:var(--text);border-color:var(--border-hover)}
.btn-sm{padding:5px 10px;font-size:.72rem}

.main{display:grid;grid-template-columns:320px 1fr;flex:1;overflow:hidden;gap:1px;background:var(--border)}
.panel{display:flex;flex-direction:column;background:var(--bg);overflow-y:auto;padding:16px;gap:10px}
.panel-title{font-size:.85rem;font-weight:600}
.section-label{font-size:.72rem;font-weight:600;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px;margin-top:12px}

.color-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.form-group{display:flex;flex-direction:column;gap:3px}
.form-group label{font-size:.68rem;font-weight:500;color:var(--text-muted)}
.color-input{width:100%;height:32px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);cursor:pointer;padding:2px}
.slider-row{display:flex;align-items:center;gap:8px}
.slider{flex:1;accent-color:var(--primary)}
.val{font-size:.7rem;color:var(--text-muted);width:40px;text-align:right}

.preview{padding:24px;border:1px solid var(--border);border-radius:var(--radius);display:flex;flex-direction:column;gap:16px;transition:all .3s ease}
.pv-card{padding:20px;border-radius:var(--radius);border:1px solid}
.pv-title{font-weight:700;margin-bottom:4px}
.pv-desc{font-size:.85rem;margin-bottom:12px}
.pv-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.pv-btn{padding:8px 16px;font-size:.8rem;font-weight:500;font-family:var(--font);border:none;border-radius:8px;cursor:pointer}
.pv-input{padding:8px 12px;font-size:.8rem;font-family:var(--font);border-radius:8px;border:1px solid;outline:none;width:180px}
.pv-badge{display:inline-block;padding:2px 10px;font-size:.72rem;font-weight:500;border-radius:20px}
.pv-type-scale{display:flex;flex-direction:column;gap:4px}
.pv-type-scale span{transition:font-size .2s ease}

.code-output{flex:1;min-height:150px;padding:14px;font-family:var(--mono);font-size:.72rem;line-height:1.6;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--secondary);overflow:auto;white-space:pre-wrap;margin:0}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:10px 20px;background:var(--bg-card);border:1px solid var(--primary);border-radius:var(--radius-sm);color:var(--primary);font-size:.8rem;font-weight:500;z-index:200;animation:toast-in .3s ease}
@keyframes toast-in{from{opacity:0;transform:translateX(-50%) translateY(10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
@media(max-width:768px){.main{grid-template-columns:1fr;grid-template-rows:auto 1fr}.panel-controls{max-height:300px}.color-grid{grid-template-columns:1fr 1fr 1fr 1fr}.header{flex-wrap:wrap}}