:root{--bg-dark: #0f1117;--bg-surface: #181b24;--bg-card: rgba(30, 34, 48, .65);--border-glass: rgba(255, 255, 255, .08);--accent-primary: #5865f2;--accent-primary-hover: #4752c4;--accent-danger: #f23f43;--accent-danger-hover: #da373a;--accent-success: #23a55a;--text-main: #f2f3f5;--text-muted: #949ba4;--text-dim: #b5bac1;--radius-lg: 16px;--radius-md: 12px;--radius-sm: 8px;--transition-fast: .2s cubic-bezier(.4, 0, .2, 1);--shadow-glow: 0 0 20px rgba(88, 101, 242, .35)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-dark);color:var(--text-main);height:100vh;overflow:hidden;-webkit-user-select:none;user-select:none}.access-denied-screen{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg-dark);display:flex;align-items:center;justify-content:center;z-index:9999;padding:20px}.access-denied-card{max-width:460px;padding:40px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;border-radius:var(--radius-lg)}.lock-icon{font-size:3.5rem;background:#f23f4326;padding:16px 20px;border-radius:50%;border:1px solid rgba(242,63,67,.3)}.access-denied-card h2{font-size:1.3rem;font-weight:700;color:var(--accent-danger)}.access-denied-card p{font-size:.9rem;color:var(--text-muted);line-height:1.5}.app-container{display:flex;flex-direction:column;height:100vh;padding:16px;gap:16px;background:radial-gradient(circle at 50% 0%,rgba(88,101,242,.12),transparent 70%)}.card-glass{background:var(--bg-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-glass);border-radius:var(--radius-lg);box-shadow:0 8px 32px #0000005e}.app-header{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;background:#181b24cc;border-radius:var(--radius-md);border:1px solid var(--border-glass)}.brand{display:flex;align-items:center;gap:12px}.logo-icon{font-size:1.8rem;background:#5865f233;padding:6px 10px;border-radius:var(--radius-md)}.brand-info h1{font-size:1.1rem;font-weight:700;letter-spacing:-.02em}.status-badge{display:inline-flex;align-items:center;gap:6px;font-size:.75rem;color:var(--text-muted)}.status-dot{width:8px;height:8px;border-radius:50%;background-color:var(--accent-success);box-shadow:0 0 8px var(--accent-success)}.user-card{display:flex;align-items:center;gap:10px;padding:6px 12px;background:#ffffff0d;border-radius:30px;border:1px solid var(--border-glass)}.user-avatar{width:32px;height:32px;border-radius:50%;border:2px solid var(--accent-primary)}.user-details{display:flex;flex-direction:column}.user-name{font-size:.85rem;font-weight:600}.user-role{font-size:.7rem;color:var(--text-muted)}.app-main{display:grid;grid-template-columns:1fr 280px;gap:16px;flex:1;min-height:0}.presentation-viewport{position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;border-radius:var(--radius-lg)}.idle-state{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px;max-width:480px}.idle-icon{font-size:4rem;margin-bottom:16px;opacity:.8;animation:float 3s ease-in-out infinite}.idle-state h2{font-size:1.3rem;margin-bottom:8px;font-weight:700}.idle-state p{font-size:.9rem;color:var(--text-muted);line-height:1.5}.video-container{width:100%;height:100%;position:relative;background:#000;display:flex;align-items:center;justify-content:center}.presentation-media{max-width:100%;max-height:100%;object-fit:contain}.live-indicator{position:absolute;top:16px;left:16px;background:#f23f43d9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:6px 12px;border-radius:20px;font-size:.75rem;font-weight:700;letter-spacing:.05em;display:flex;align-items:center;gap:6px;box-shadow:0 0 12px #f23f4380;z-index:5}.pulse{width:8px;height:8px;background-color:#fff;border-radius:50%;animation:pulse-animation 1.5s infinite}.presenter-tag{position:absolute;bottom:16px;left:16px;background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:6px 14px;border-radius:var(--radius-sm);font-size:.8rem;border:1px solid var(--border-glass);z-index:5}.reactions-overlay{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden;z-index:10}.floating-emoji{position:absolute;font-size:2.5rem;bottom:20px;animation:float-up 2.5s ease-out forwards}.sidebar{display:flex;flex-direction:column;padding:16px;gap:20px;overflow-y:auto}.sidebar-section h3{font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:12px;display:flex;justify-content:space-between;align-items:center}.badge{background:#5865f24d;color:var(--accent-primary);padding:2px 8px;border-radius:10px;font-size:.75rem}.users-list{list-style:none;display:flex;flex-direction:column;gap:8px}.user-item{display:flex;align-items:center;gap:10px;padding:8px 10px;background:#ffffff08;border-radius:var(--radius-sm);font-size:.85rem;border:1px solid transparent;transition:var(--transition-fast)}.user-item:hover{background:#ffffff14;border-color:var(--border-glass)}.user-item.presenter{border-color:var(--accent-primary);background:#5865f226}.user-item-avatar{width:24px;height:24px;border-radius:50%}.reactions-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.btn-reaction{background:#ffffff0d;border:1px solid var(--border-glass);border-radius:var(--radius-sm);font-size:1.3rem;padding:8px;cursor:pointer;transition:transform var(--transition-fast),background var(--transition-fast)}.btn-reaction:hover{transform:scale(1.15);background:#ffffff26}.app-controls{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;z-index:20}.controls-group{display:flex;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:var(--radius-md);font-weight:600;font-size:.9rem;cursor:pointer;border:none;transition:all var(--transition-fast);-webkit-user-select:none;user-select:none}.btn-full{width:100%}.btn-primary{background-color:var(--accent-primary);color:#fff}.btn-primary:hover{background-color:var(--accent-primary-hover);transform:translateY(-1px)}.btn-glow{box-shadow:var(--shadow-glow)}.btn-danger{background-color:var(--accent-danger);color:#fff}.btn-danger:hover{background-color:var(--accent-danger-hover)}.btn-secondary{background:#ffffff14;color:var(--text-main);border:1px solid var(--border-glass)}.btn-secondary:hover{background:#ffffff26}.btn-ghost{background:transparent;color:var(--text-muted)}.btn-ghost:hover{color:var(--text-main);background:#ffffff0d}.hidden{display:none!important}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes pulse-animation{0%{transform:scale(.95);opacity:1}50%{transform:scale(1.3);opacity:.5}to{transform:scale(.95);opacity:1}}@keyframes float-up{0%{transform:translateY(0) scale(.5);opacity:1}50%{opacity:.9}to{transform:translateY(-300px) scale(1.2);opacity:0}}