*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a12;--text:#fff;--primary:#6366f1;--glass-bg:rgba(255,255,255,0.08);
  --glass-border:rgba(255,255,255,0.15);--radius:16px;
}
html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}
input,textarea,select,button{font:inherit}
.glass-filter-svg{position:absolute;width:0;height:0;overflow:hidden}

/* Liquid Glass */
.liquid-glass .glass-card,.liquid-glass .glass-bar,.liquid-glass .liquid-btn{
  position:relative;background:rgba(255,255,255,0.06);border:1px solid var(--glass-border);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  box-shadow:0 0 6px rgba(0,0,0,0.03),0 2px 6px rgba(0,0,0,0.08),inset 3px 3px 0.5px -3px rgba(0,0,0,0.9),inset -3px -3px 0.5px -3px rgba(0,0,0,0.85),inset 1px 1px 1px -0.5px rgba(0,0,0,0.6),inset -1px -1px 1px -0.5px rgba(0,0,0,0.6),inset 0 0 6px 6px rgba(0,0,0,0.12),0 0 12px rgba(255,255,255,0.08);
  border-radius:var(--radius);
}
.liquid-glass.light .glass-card,.liquid-glass.light .glass-bar{
  background:rgba(255,255,255,0.55);border-color:rgba(0,0,0,0.08);
  box-shadow:0 0 8px rgba(0,0,0,0.03),0 2px 6px rgba(0,0,0,0.06),inset 3px 3px 0.5px -3.5px rgba(255,255,255,0.09),inset -3px -3px 0.5px -3.5px rgba(255,255,255,0.85),0 0 12px rgba(0,0,0,0.06);
}
.normal-ui .glass-card,.normal-ui .glass-bar{background:#1e1e2e;border:1px solid #333;box-shadow:none;backdrop-filter:none}
.normal-ui.light .glass-card,.normal-ui.light .glass-bar{background:#fff;border-color:#e0e0e0}

.liquid-btn{
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  border:none;padding:0;overflow:hidden;transition:transform .2s,filter .2s;
}
.liquid-btn:hover{transform:scale(1.02);filter:brightness(1.08)}
.liquid-btn:active{transform:scale(0.98)}
.liquid-btn-inner{display:flex;align-items:center;gap:8px;padding:12px 24px;width:100%;justify-content:center}
.liquid-btn.primary .liquid-btn-inner{background:linear-gradient(135deg,var(--primary),#818cf8);border-radius:calc(var(--radius) - 2px)}

/* Index Page */
.index-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;
  background:linear-gradient(135deg,#0f0c29,#302b63,#24243e)}
.index-container{width:100%;max-width:480px}
.index-header{text-align:center;margin-bottom:32px}
.index-header i{font-size:48px;color:#f472b6;margin-bottom:8px;display:block}
.index-header h1{font-size:2rem;font-weight:700;margin-bottom:4px}
.index-header p{opacity:.7}
.glass-card{padding:24px;margin-bottom:16px}
.glass-card h2,.glass-card h3{display:flex;align-items:center;gap:8px;margin-bottom:20px;font-size:1.1rem}
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:6px;font-size:.85rem;opacity:.8}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:12px 16px;border-radius:12px;border:1px solid var(--glass-border);
  background:rgba(255,255,255,0.05);color:inherit;outline:none;
}
.form-group input:focus{border-color:var(--primary)}
.hint{font-size:.8rem;opacity:.6;text-align:center;margin-top:12px}
.alert{padding:12px 16px;border-radius:12px;margin-bottom:16px;display:flex;align-items:center;gap:8px;font-size:.9rem}
.alert-error{background:rgba(239,68,68,0.15);color:#fca5a5}
.alert-success{background:rgba(34,197,94,0.15);color:#86efac}
.welcome-bar{display:flex;align-items:center;justify-content:space-between}
.link-btn{background:none;border:none;color:inherit;cursor:pointer;font-size:1.2rem;opacity:.7}
.action-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.action-card{cursor:pointer;text-align:center;padding:28px 16px;transition:transform .2s;border:none;color:inherit}
.action-card i{font-size:2rem;display:block;margin-bottom:8px;color:var(--primary)}
.action-card:hover{transform:translateY(-2px)}
.rooms-list h3{margin-bottom:16px}
.room-item{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid rgba(255,255,255,0.06)}
.room-item:last-child{border:none}
.room-item small{display:block;opacity:.6;font-size:.75rem;margin-top:2px}
.room-links{display:flex;gap:6px}
.mini-btn{padding:6px 12px;border-radius:8px;background:var(--primary);font-size:.75rem;font-weight:600}
.empty{opacity:.5;text-align:center;padding:20px}
.modal{position:fixed;inset:0;background:rgba(0,0,0,0.6);display:none;align-items:center;justify-content:center;z-index:1000;padding:20px;backdrop-filter:blur(4px)}
.modal.active{display:flex}
.modal-content{position:relative;width:100%;max-width:420px;max-height:90vh;overflow-y:auto}
.modal-close{position:absolute;top:12px;right:12px;background:none;border:none;color:inherit;font-size:1.4rem;cursor:pointer;z-index:1;opacity:.7}
.modal-actions{display:flex;gap:12px;margin-top:20px}
.modal-actions .liquid-btn{flex:1}