body{background-color:#212529}.bg-light-dark{background-color:#2b3035}#root{display:flex;flex-direction:column;min-height:100vh}.container{flex:1}:root{--game-primary: #00b4d8;--game-secondary: #00f5d4;--game-accent: #f4a261;--game-danger: #e63946;--game-success: #10b981;--game-warning: #f59e0b;--bg-dark: #0a0e17;--bg-darker: #050811;--bg-card: rgba(22, 33, 62, .8);--bg-card-hover: rgba(22, 33, 62, .95);--text-light: #ffffff;--text-dim: #94a3b8;--text-glow: rgba(0, 245, 212, .8);--border-glow: rgba(0, 180, 216, .4);--shadow-glow: 0 0 20px rgba(0, 180, 216, .3);--level-up: #ffd700;--premium-gold: #ffd700}.header-navbar *{box-sizing:border-box;margin:0;padding:0}.mobile-menu-toggle{position:fixed;top:20px;right:20px;z-index:1001;background:linear-gradient(135deg,var(--game-primary),var(--game-secondary));border:none;border-radius:50%;width:50px;height:50px;color:var(--bg-dark);font-size:24px;font-weight:700;cursor:pointer;box-shadow:var(--shadow-glow);transition:all .3s ease}.mobile-menu-toggle:hover{transform:scale(1.1)}.header-navbar{position:fixed;top:0;left:0;width:320px;height:100vh;background:linear-gradient(135deg,var(--bg-darker),var(--bg-dark));border-right:3px solid var(--border-glow);padding:20px;overflow-y:auto;z-index:1000;transform:translate(-100%);transition:transform .3s ease;box-shadow:10px 0 30px #00000080}@media (max-width: 1024px){.header-navbar{width:100%;max-width:400px}.header-navbar.mobile-open{transform:translate(0)}}@media (min-width: 1025px){.header-navbar.mobile-open{transform:translate(0)}}.brand-bar{padding-bottom:20px;border-bottom:2px solid rgba(255,255,255,.1);margin-bottom:25px}.game-logo{display:flex;align-items:center;gap:15px;margin-bottom:10px}.logo-icon{font-size:40px;background:linear-gradient(45deg,var(--game-primary),var(--game-secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:pulse 2s infinite}.logo-text{display:flex;flex-direction:column}.logo-title{font-size:24px;font-weight:900;color:var(--text-light);text-transform:uppercase;letter-spacing:2px}.logo-subtitle{font-size:18px;font-weight:700;color:var(--game-secondary);letter-spacing:1px}.game-tagline{font-size:12px;color:var(--text-dim);text-align:center;font-style:italic;margin-top:5px}.lobby-header{margin-bottom:25px;text-align:center}.lobby-title{font-size:24px;font-weight:900;color:var(--text-light);margin-bottom:10px;display:flex;align-items:center;justify-content:center;gap:10px}.lobby-icon{font-size:28px;color:var(--game-secondary)}.lobby-status{display:flex;justify-content:center;gap:20px;font-size:14px}.status-online{color:var(--game-success);font-weight:600}.player-count{color:var(--text-dim)}.game-status-bar{background:var(--bg-card);border:2px solid var(--border-glow);border-radius:15px;padding:15px;margin-bottom:25px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.player-info{display:flex;align-items:center;gap:15px;margin-bottom:15px}.player-avatar{position:relative;width:60px;height:60px;border-radius:50%;overflow:hidden;border:3px solid var(--game-primary)}.player-avatar img{width:100%;height:100%;object-fit:cover}.premium-crown{position:absolute;top:-5px;right:-5px;font-size:20px;color:var(--premium-gold)}.player-stats{flex:1}.player-name-rank{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.player-name{font-size:16px;font-weight:700;color:var(--text-light)}.player-rank{background:#00b4d833;color:var(--game-primary);padding:3px 10px;border-radius:10px;font-size:12px;font-weight:600}.player-level-xp{display:flex;align-items:center;gap:10px}.level-badge{background:linear-gradient(135deg,var(--game-primary),var(--game-secondary));color:var(--bg-dark);padding:4px 12px;border-radius:20px;font-size:14px;font-weight:800;min-width:60px;text-align:center}.xp-meter{flex:1;height:20px;background:#ffffff1a;border-radius:10px;position:relative;overflow:hidden}.xp-progress{height:100%;background:linear-gradient(90deg,var(--game-primary),var(--game-secondary));border-radius:10px;transition:width .5s ease}.xp-text{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:var(--text-light)}.quick-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat-item{text-align:center;padding:10px 5px;background:#ffffff0d;border-radius:10px;transition:all .3s ease}.stat-item:hover{background:#ffffff1a;transform:translateY(-2px)}.stat-icon{display:block;font-size:20px;margin-bottom:5px}.stat-value{display:block;font-size:18px;font-weight:800;color:var(--text-light);margin-bottom:2px}.stat-label{font-size:10px;color:var(--text-dim);text-transform:uppercase;letter-spacing:1px}.nav-grid{display:grid;grid-template-columns:1fr;gap:25px;margin-bottom:30px}.menu-category{background:var(--bg-card);border:2px solid rgba(255,255,255,.1);border-radius:15px;padding:20px;transition:all .3s ease}.menu-category:hover{border-color:var(--border-glow);transform:translateY(-5px);box-shadow:var(--shadow-glow)}.category-header{display:flex;align-items:center;gap:10px;margin-bottom:15px}.category-icon{font-size:24px}.category-title{font-size:18px;font-weight:700;color:var(--text-light);margin:0}.category-items{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}.nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:15px 10px;background:#ffffff0d;border-radius:12px;text-decoration:none;transition:all .3s ease;position:relative;cursor:pointer;text-align:center}.nav-item:hover{background:#ffffff1a;transform:translateY(-3px)}.nav-item-study:hover{border:2px solid var(--game-success)}.nav-item-game:hover{border:2px solid var(--game-primary)}.nav-item-battle:hover{border:2px solid var(--game-danger)}.nav-item-social:hover{border:2px solid var(--game-accent)}.nav-item-challenge{background:linear-gradient(135deg,#f4a26133,#e6394633);border:2px solid var(--game-accent);grid-column:1 / -1}.nav-item-challenge:hover{background:linear-gradient(135deg,#f4a2614d,#e639464d);transform:scale(1.05)}.challenge-glow{position:absolute;top:-2px;left:-2px;right:-2px;bottom:-2px;background:linear-gradient(45deg,transparent,rgba(244,162,97,.2),transparent);border-radius:12px;animation:glow 2s infinite}.nav-icon-container{position:relative;margin-bottom:8px}.nav-icon{font-size:32px;display:block;margin-bottom:5px}.nav-label{font-size:14px;font-weight:600;color:var(--text-light);display:block}.nav-desc{font-size:11px;color:var(--text-dim);margin-top:5px;line-height:1.3}.nav-badge{position:absolute;top:-5px;right:-5px;background:var(--game-danger);color:#fff;font-size:10px;font-weight:700;min-width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;padding:2px}.quick-actions{display:flex;justify-content:space-between;gap:10px;padding-top:20px;border-top:2px solid rgba(255,255,255,.1)}.action-btn{flex:1;padding:12px;border:none;border-radius:12px;background:#ffffff0d;color:var(--text-light);font-weight:600;cursor:pointer;transition:all .3s ease;display:flex;flex-direction:column;align-items:center;gap:5px}.action-btn:hover{background:#ffffff1a;transform:translateY(-2px)}.action-profile:hover{border:2px solid var(--game-primary)}.action-settings:hover{border:2px solid var(--game-secondary)}.action-logout:hover{border:2px solid var(--game-danger)}.action-icon{font-size:20px}.action-label{font-size:12px}.profile-menu{animation:slideIn .3s ease}.back-btn{background:#ffffff0d;border:2px solid var(--border-glow);color:var(--text-light);padding:10px 15px;border-radius:10px;font-weight:600;cursor:pointer;transition:all .3s ease;margin-bottom:20px;width:100%}.back-btn:hover{background:#ffffff1a}.profile-header{text-align:center;margin-bottom:25px}.profile-avatar-large{position:relative;width:100px;height:100px;border-radius:50%;overflow:hidden;border:4px solid var(--game-primary);margin:0 auto 15px}.profile-avatar-large img{width:100%;height:100%;object-fit:cover}.premium-badge-large{position:absolute;bottom:-10px;left:50%;transform:translate(-50%);background:linear-gradient(45deg,var(--premium-gold),#ffa500);color:var(--bg-dark);padding:5px 15px;border-radius:15px;font-size:12px;font-weight:800;white-space:nowrap}.profile-name{font-size:24px;font-weight:800;color:var(--text-light);margin-bottom:5px}.profile-rank{color:var(--game-primary);font-weight:600;font-size:16px}.profile-stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;margin-bottom:25px}.profile-stat{display:flex;align-items:center;gap:15px;background:#ffffff0d;padding:15px;border-radius:12px;transition:all .3s ease}.profile-stat:hover{background:#ffffff1a;transform:translateY(-2px)}.profile-stat .stat-icon{font-size:32px;margin:0}.stat-info{display:flex;flex-direction:column}.stat-value{font-size:20px;font-weight:800;color:var(--text-light);margin-bottom:2px}.stat-label{font-size:12px;color:var(--text-dim)}.profile-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.profile-action-btn{background:#ffffff0d;border:2px solid rgba(255,255,255,.1);border-radius:10px;padding:12px;text-decoration:none;color:var(--text-light);font-weight:600;text-align:center;transition:all .3s ease;position:relative;display:flex;flex-direction:column;align-items:center;gap:5px}.profile-action-btn:hover{background:#ffffff1a;border-color:var(--game-primary);transform:translateY(-2px)}.notification-dot{position:absolute;top:-5px;right:-5px;background:var(--game-danger);color:#fff;font-size:10px;font-weight:700;min-width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center}.guest-lobby{padding:20px}.guest-header{text-align:center;margin-bottom:30px}.guest-title{font-size:24px;font-weight:900;color:var(--text-light);margin-bottom:10px;background:linear-gradient(45deg,var(--game-primary),var(--game-secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.guest-subtitle{font-size:14px;color:var(--text-dim);margin-bottom:25px}.guest-actions{display:flex;gap:15px;margin-bottom:30px}.guest-action-btn{flex:1;padding:18px;border:none;border-radius:15px;text-decoration:none;font-weight:700;font-size:16px;text-align:center;transition:all .3s ease;display:flex;flex-direction:column;align-items:center;gap:10px}.guest-login{background:#00b4d833;color:var(--game-primary);border:2px solid var(--game-primary)}.guest-register{background:linear-gradient(135deg,var(--game-primary),var(--game-secondary));color:var(--bg-dark);border:2px solid var(--game-secondary)}.guest-action-btn:hover{transform:translateY(-3px);box-shadow:var(--shadow-glow)}.guest-features{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.feature{display:flex;flex-direction:column;align-items:center;gap:8px;padding:15px;background:#ffffff0d;border-radius:12px;transition:all .3s ease}.feature:hover{background:#ffffff1a;transform:translateY(-2px)}.feature-icon{font-size:24px}.feature-text{font-size:12px;color:var(--text-light);font-weight:600;text-align:center}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.8;transform:scale(1.1)}}@keyframes glow{0%,to{opacity:.5}50%{opacity:1}}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}.header-navbar::-webkit-scrollbar{width:8px}.header-navbar::-webkit-scrollbar-track{background:#ffffff0d;border-radius:4px}.header-navbar::-webkit-scrollbar-thumb{background:var(--game-primary);border-radius:4px}.header-navbar::-webkit-scrollbar-thumb:hover{background:var(--game-secondary)}