*{box-sizing:border-box;margin:0;padding:0}html,body{max-width:100%;overflow-x:hidden;position:relative}body{font-family:Inter,sans-serif;background-color:#fcfcfd;color:#2d3436;line-height:1.6;-webkit-font-smoothing:antialiased}h1,h2,h3,.navbar-brand a{font-family:Montserrat,sans-serif;letter-spacing:-.5px}.app-container{padding:20px;max-width:1100px;margin:0 auto}.navbar{position:fixed!important;top:0;left:0;width:100%;height:70px;background-color:#fcfcfd;display:flex;align-items:center;justify-content:space-between;padding:0 30px;z-index:10000;box-sizing:border-box;border-bottom:1px solid #f1f2f6;box-shadow:none;transition:none!important;will-change:auto}.navbar-brand a{font-family:Inter,sans-serif;font-size:1.8rem;font-weight:800;text-decoration:none;color:#636e72;letter-spacing:-.03em;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;display:flex;align-items:center;gap:8px}.navbar-links{display:flex;align-items:center;list-style:none;gap:25px}.navbar-links a{font-family:Inter,sans-serif;text-decoration:none;color:#636e72!important;font-weight:600;transition:color .2s;text-shadow:none!important;-webkit-font-smoothing:antialiased}.navbar-links a:hover,.navbar-links a.active{color:#646cff!important}.nav-avatar{width:35px;height:35px;border-radius:50%;border:2px solid #646cff}.burger-icon,.nav-overlay{display:none}.main-wrapper{padding-top:70px}.nav-profile-link{display:flex;align-items:center;gap:8px;text-decoration:none;color:#2d3436;font-weight:600;padding:6px 12px;border-radius:12px;transition:background .2s}.nav-profile-link:hover{background:#f1f2f6}.nav-username{font-size:.9rem}.app-header{text-align:center;margin:60px 0 40px}.app-header h1{background:linear-gradient(135deg,#646cff,#4a90e2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;font-weight:900;margin-bottom:15px;filter:drop-shadow(0 2px 10px rgba(100,108,255,.1))}.app-header p{color:#636e72;font-size:1.2rem;font-weight:500}.search-box{max-width:100%;margin:0 auto 50px;position:relative}.search-box input{width:100%;padding:20px 30px;font-size:1.1rem;border:2px solid #f0f0f0;border-radius:20px;background:#fff;box-shadow:0 10px 30px #00000008;transition:all .4s cubic-bezier(.165,.84,.44,1);outline:none;font-weight:500}.search-box input:focus{border-color:#646cff;box-shadow:0 15px 35px #646cff1f;transform:translateY(-2px)}.search-box input::placeholder{color:#b2bec3}.idioms-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:30px;padding:20px 0 50px}.idiom-card{background:#fff;border-radius:28px;border:1px solid #f1f2f6;overflow:hidden;display:flex;flex-direction:column;height:520px;transition:transform .4s cubic-bezier(.175,.885,.32,1.275),box-shadow .4s ease,border-color .4s ease;box-shadow:0 10px 25px #00000005}.idiom-card:hover{transform:translateY(-12px);box-shadow:0 30px 60px #646cff26;border-color:#646cff33}.idiom-image-wrapper{width:100%;height:220px;overflow:hidden}.idiom-img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.165,.84,.44,1)}.idiom-card:hover .idiom-img{transform:scale(1.08)}.idiom-main-content{padding:20px;flex-grow:1}.idiom-phrase{font-size:1.4rem;font-weight:800;color:#1a1a1a;margin-bottom:10px}.idiom-example{margin-top:15px;padding:12px;background:#f8faff;border-left:4px solid #646cff;border-radius:4px;font-style:italic;font-size:.9rem}.idiom-footer{padding:15px 20px;border-top:1px solid #f9f9f9;display:flex;justify-content:flex-end}.toaster-container{z-index:999999!important;pointer-events:none}.custom-toast{background:#333!important;color:#fff!important;border-radius:12px!important;box-shadow:0 8px 20px #0006!important;font-family:Inter,sans-serif!important;padding:12px 20px!important;border:1px solid #444444!important;font-size:.95rem!important;pointer-events:auto!important}.toast-confirm-container{display:flex;flex-direction:column;align-items:center;gap:12px;min-width:220px}.toast-confirm-text{margin:0;font-weight:600;text-align:center}.toast-confirm-actions{display:flex;gap:10px;width:100%}.toast-btn{flex:1;border:none;padding:8px 12px;border-radius:8px;cursor:pointer;font-size:.85rem;font-weight:700;transition:all .2s ease}.toast-btn-delete{background-color:#ff4b4b;color:#fff}.toast-btn-delete:hover{background-color:#f33;transform:translateY(-1px)}.toast-btn-cancel{background-color:#4a4a4a;color:#fff}.toast-btn-cancel:hover{background-color:#5a5a5a}.main-wrapper{width:100%;min-height:100vh}.main-wrapper.is-loading{position:fixed;width:100%;height:100vh;overflow:hidden;visibility:hidden}.main-wrapper.is-ready{visibility:visible!important}.fade-in{animation:fadeInKeyframe .5s ease forwards}.random-page-wrapper{max-width:600px;margin:40px auto;text-align:center;padding:20px;display:flex;flex-direction:column;align-items:center}.trainer-card{background:#fff;width:100%;padding:35px;border-radius:30px;box-shadow:0 20px 50px #00000014;border:1px solid #f0f0f0;transition:all .3s ease}.random-image-wrapper{width:100%;height:320px;overflow:hidden;border-radius:20px;margin-bottom:25px;background-color:#f9f9f9;box-shadow:0 8px 16px #0000000d}.random-card-image{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}.random-phrase-display{font-family:Montserrat,sans-serif;font-size:2.4rem;background:linear-gradient(90deg,#646cff,#4a90e2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;font-weight:800;margin:20px 0;line-height:1.2}.meaning-section{text-align:left;background:#f8faff;padding:25px;border-radius:18px;border-left:6px solid #646cff;margin-top:15px;box-shadow:inset 0 2px 4px #00000005}.idiom-meaning strong{color:#646cff}.next-phrase-btn{margin-top:30px;background:linear-gradient(135deg,#2d3436,#000);color:#fff;border:none;padding:18px;border-radius:15px;cursor:pointer;width:100%;font-size:1.1rem;font-weight:700;box-shadow:0 10px 20px #00000026;transition:all .3s cubic-bezier(.175,.885,.32,1.275)}.next-phrase-btn:hover{background:linear-gradient(135deg,#646cff,#4a90e2);transform:translateY(-3px) scale(1.02);box-shadow:0 15px 30px #646cff4d}.limit-counter{margin-top:20px;font-size:.9rem;color:#a0a0a0;font-weight:600;letter-spacing:.5px}.start-screen{background:#fff;padding:60px 40px;border-radius:35px;box-shadow:0 25px 60px #00000012;text-align:center;border:1px solid #f0f0f0;display:flex;flex-direction:column;align-items:center;gap:25px;max-width:550px;width:100%;position:relative;overflow:hidden}.start-screen:before{content:"🎲";position:absolute;font-size:10rem;top:-30px;left:-30px;opacity:.05;transform:rotate(-15deg)}.start-text{font-family:Montserrat,sans-serif;font-size:1.6rem;font-weight:800;color:#1a1a1a;line-height:1.4;margin-bottom:10px}.promo-hint{font-size:.9rem;color:#646cff;background:#f0f1ff;padding:8px 20px;border-radius:100px;display:inline-block;font-weight:700;letter-spacing:.5px;border:1px solid rgba(100,108,255,.1)}.start-screen .add-idiom-button{background:linear-gradient(135deg,#646cff,#4a90e2);color:#fff;padding:20px 60px;font-size:1.3rem;border-radius:20px;border:none;cursor:pointer;font-weight:800;box-shadow:0 15px 30px #646cff59;transition:all .4s cubic-bezier(.175,.885,.32,1.275);width:auto}.start-screen .add-idiom-button:hover{transform:scale(1.08) translateY(-5px);box-shadow:0 20px 40px #646cff73}.start-screen .add-idiom-button:active{transform:scale(.95)}.trainer-title{font-size:2.5rem;font-weight:900;background:linear-gradient(90deg,#2d3436,#636e72);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:35px}.promo-card{background:linear-gradient(135deg,#fff,#f0f4ff)!important;padding:50px!important;animation:fadeIn .5s ease}.promo-icon{font-size:5rem;animation:rocket-float 3s ease-in-out infinite}@keyframes rocket-float{0%,to{transform:translateY(0)}50%{transform:translateY(-15px)}}.start-screen{background:#fff;padding:50px;border-radius:28px;box-shadow:0 10px 30px #0000000d}.promo-hint{font-size:.85rem;color:#9ca3af;background:#f3f4f6;padding:4px 12px;border-radius:20px;margin-top:10px}.add-idiom-button{background:#646cff;color:#fff;padding:14px 28px;border-radius:12px;border:none;font-weight:700;cursor:pointer;transition:all .3s}.add-idiom-button:hover{background:#535bf2;transform:scale(1.02)}.delete-btn{background:#fff5f5;color:#ff4d4f;border:1px solid #ff4d4f33;padding:8px 16px;border-radius:8px;cursor:pointer;font-weight:600}.delete-btn:hover{background:#ff4d4f;color:#fff}.nav-user-wrapper{display:flex;align-items:center;gap:15px}.auth-btn{padding:10px 20px;border-radius:10px;font-weight:700;cursor:pointer;transition:all .3s ease;font-family:Inter,sans-serif;font-size:.9rem;border:none}.auth-btn.login{background:#646cff;color:#fff;box-shadow:0 4px 12px #646cff33}.auth-btn.login:hover{background:#535bf2;transform:translateY(-1px);box-shadow:0 6px 15px #646cff4d}.auth-btn.logout{background:transparent;color:#636e72;border:1px solid #dcdde1}.auth-btn.logout:hover{background:#fff1f0;color:#ff4d4f;border-color:#ff4d4f}.profile-page-wrapper{max-width:1000px;margin:40px auto;padding:0 20px;animation:fadeIn .6s ease-out}.profile-user-card{background:#fff;border-radius:30px;padding:40px;display:flex;align-items:center;gap:40px;box-shadow:0 20px 50px #0000000d;border:1px solid #f1f2f6;margin-bottom:50px;position:relative;overflow:hidden}.profile-user-card:after{content:"";position:absolute;top:0;right:0;width:150px;height:100%;background:linear-gradient(to left,rgba(100,108,255,.03),transparent);pointer-events:none}.profile-main-avatar{width:140px;height:140px;border-radius:50%;border:5px solid #f0f1ff;object-fit:cover;box-shadow:0 10px 20px #646cff26;transition:transform .3s ease}.profile-main-avatar:hover{transform:scale(1.05) rotate(5deg)}.profile-info-content{flex-grow:1}.profile-name{font-family:Montserrat,sans-serif;font-size:2.2rem;font-weight:800;color:#1a1a1a;margin:0 0 5px}.profile-email-text{color:#9ca3af;font-size:1.1rem;margin-bottom:25px;display:block}.profile-stats-row{display:flex;gap:30px}.stat-item{background:#f8faff;padding:15px 25px;border-radius:18px;border:1px solid #f0f1ff;display:flex;flex-direction:column;min-width:120px;transition:all .3s ease}.stat-item:hover{background:#fff;border-color:#646cff;transform:translateY(-3px);box-shadow:0 10px 20px #646cff14}.stat-value{font-size:1.8rem;font-weight:800;color:#646cff;line-height:1;margin-bottom:5px}.stat-label{font-size:.75rem;color:#7f8c8d;text-transform:uppercase;letter-spacing:1.2px;font-weight:700}.profile-content-divider{margin-top:20px;margin-bottom:35px;border-bottom:2px solid #f1f2f6;padding-bottom:15px;display:flex;align-items:center;justify-content:space-between}.section-title{font-size:1.8rem;font-weight:800;color:#2d3436;margin:0}.add-idiom-container{background:#fff;padding:40px;border-radius:30px;box-shadow:0 20px 50px #0000000d;border:1px solid #f1f2f6;max-width:700px;margin:40px auto;animation:fadeIn .5s ease-out}.add-idiom-title{font-family:Montserrat,sans-serif;font-size:2rem;font-weight:900;color:#1a1a1a;margin-bottom:30px;text-align:center;background:linear-gradient(90deg,#2d3436,#646cff);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.add-idiom-form{display:flex;flex-direction:column;gap:20px}.form-label{font-weight:700;color:#636e72;font-size:.9rem;margin-bottom:-15px;margin-left:5px}.add-idiom-input,.add-idiom-textarea,.add-idiom-select{padding:18px 25px;border-radius:16px;border:2px solid #f0f0f0;font-size:1rem;font-family:Inter,sans-serif;transition:all .3s cubic-bezier(.4,0,.2,1);background-color:#fcfcfd;width:100%;outline:none}.add-idiom-input:focus,.add-idiom-textarea:focus,.add-idiom-select:focus{border-color:#646cff;background-color:#fff;box-shadow:0 10px 20px #646cff14;transform:translateY(-2px)}.add-idiom-row{display:flex;gap:15px;align-items:flex-end}.add-idiom-select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23646cff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 20px center;background-size:18px}.add-idiom-textarea{min-height:120px;resize:vertical}.add-idiom-button{margin-top:10px;padding:20px;background:linear-gradient(135deg,#646cff,#4a90e2);color:#fff;border:none;border-radius:18px;cursor:pointer;font-size:1.1rem;font-weight:800;box-shadow:0 10px 25px #646cff4d;transition:all .4s cubic-bezier(.175,.885,.32,1.275)}.add-idiom-button:hover:not(:disabled){transform:scale(1.02) translateY(-3px);box-shadow:0 15px 35px #646cff66}.add-idiom-button:active{transform:scale(.98)}.add-idiom-button:disabled{background:#d1d5db;box-shadow:none;cursor:not-allowed;opacity:.7}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.quiz-container{display:flex;justify-content:center;align-items:center;min-height:calc(100vh - 120px);padding:20px}.quiz-card{background:#fff;border-radius:30px;box-shadow:0 20px 50px #0000000d;width:100%;max-width:550px;padding:40px;text-align:center;border:1px solid #f1f2f6;animation:fadeIn .5s ease-out}.quiz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.quiz-progress{font-weight:700;color:#636e72;font-size:.95rem;background:#f8f9fa;padding:6px 15px;border-radius:12px}.quiz-score-badge{background:#e0e7ff;color:#646cff;padding:6px 15px;border-radius:12px;font-weight:800;font-size:.95rem}.timer-section{margin-bottom:30px}.timer-text{font-weight:800;font-size:1.2rem;margin-bottom:10px}.timer-container{width:100%;height:8px;background:#f0f0f0;border-radius:10px;overflow:hidden}.timer-bar{height:100%;transition:width 1s linear,background-color .3s ease}.quiz-image-wrapper{width:100%;height:240px;border-radius:20px;overflow:hidden;margin-bottom:25px;box-shadow:0 8px 20px #0000000f}.quiz-img{width:100%;height:100%;object-fit:cover}.quiz-phrase{font-size:1.8rem;font-weight:850;color:#1a1a1a;margin-bottom:30px;line-height:1.3}.quiz-options{display:grid;grid-template-columns:1fr;gap:12px}.option-btn{background:#fff;border:2px solid #f0f0f0;padding:16px 20px;border-radius:16px;font-size:1.05rem;font-weight:600;color:#2d3436;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);font-family:Inter,sans-serif}.option-btn:hover:not(:disabled){border-color:#646cff;background:#f8faff;transform:translateY(-2px)}.option-btn.correct{background:#22c55e!important;color:#fff!important;border-color:#22c55e!important}.option-btn.wrong{background:#ef4444!important;color:#fff!important;border-color:#ef4444!important}.option-btn.dimmed{opacity:.4;transform:scale(.98)}.start-btn{background:linear-gradient(135deg,#646cff,#4a90e2);color:#fff;padding:18px 50px;border-radius:18px;font-weight:800;font-size:1.2rem;border:none;cursor:pointer;box-shadow:0 10px 20px #646cff4d;transition:all .3s ease}.start-btn:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 15px 30px #646cff66}.training-wrapper{display:flex;justify-content:center;padding:40px 20px;width:100%}.training-card{background:#fff;border-radius:35px;overflow:hidden;max-width:900px;width:100%;box-shadow:0 25px 60px #0000001a;display:flex;flex-direction:column;min-height:auto;border:1px solid #f0f0f0}.training-image-container{width:100%;height:300px;overflow:hidden}.training-img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}.training-content{width:100%;padding:40px;text-align:center}.sentence-display{font-size:1.6rem;font-weight:700;color:#1a1a1a;margin:10px 0 25px;line-height:1.4;font-family:Montserrat,sans-serif}.training-input{width:100%;padding:20px;border:2px solid #f0f0f0;border-radius:18px;font-size:1.2rem;margin-bottom:20px;transition:all .3s;outline:none;text-align:center;font-weight:600}.training-input:focus{border-color:#646cff;box-shadow:0 10px 25px #646cff1a}.s-border{border-color:#00b894!important;background:#f0fff4}.e-border{border-color:#ff7675!important;background:#fff5f5}.check-btn{background:linear-gradient(135deg,#646cff,#4a90e2);color:#fff;padding:18px 30px;border-radius:16px;border:none;font-size:1.1rem;font-weight:800;cursor:pointer;width:100%;box-shadow:0 8px 20px #646cff4d;transition:all .3s cubic-bezier(.175,.885,.32,1.275);display:flex;justify-content:center;align-items:center;gap:10px}.check-btn:hover{transform:translateY(-3px);box-shadow:0 12px 25px #646cff66;filter:brightness(1.1)}.check-btn:active{transform:translateY(-1px)}.next-btn{background:#2d3436;color:#fff;padding:18px 30px;border-radius:16px;border:none;font-size:1.1rem;font-weight:800;cursor:pointer;width:100%;box-shadow:0 8px 20px #00000026;transition:all .3s ease}.next-btn:hover{background:#000;transform:translate(5px)}.correct-answer{color:#646cff;font-weight:800;text-decoration:underline}.category-badge{position:static;background:#f0f1ff;color:#646cff;padding:6px 16px;border-radius:100px;font-size:.8rem;font-weight:800;letter-spacing:1px;text-transform:uppercase;border:1px solid rgba(100,108,255,.2)}.meaning-hint{font-size:1rem;color:#636e72;background:#f8faff;padding:15px 20px;border-radius:15px;margin-bottom:30px;border-left:5px solid #646cff;display:inline-block;text-align:left}.msg-container{margin-top:15px;animation:slideUp .3s ease}.status-messages{margin-top:20px}.success-msg{color:#00b894;font-weight:700;font-size:1.1rem}.error-msg{color:#ff7675;font-weight:700}.hint-box{margin-top:25px;padding:20px;background:#fff5f5;border-radius:18px;border:2px dashed #ff7675}.correct-answer-text span{color:#646cff;font-weight:900;font-size:1.3rem;display:block;margin-top:5px}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.training-header{display:flex;flex-direction:column;align-items:center;gap:15px;padding:25px 30px 20px;background:#fff}.idiom-counter{background:#f8f9fa;padding:8px 20px;border-radius:15px;display:flex;align-items:center;gap:8px;border:1px solid #eee}.idiom-counter span{text-transform:uppercase;letter-spacing:1px;font-size:.7rem;opacity:.8}.idiom-counter strong{color:#646cff;font-size:1.2rem;font-weight:800}.idiom-counter small{opacity:.6;font-size:.8rem}.idiom-counter:hover{transform:translateY(-2px);background:#ffffff26;transition:all .3s ease}.progress-bar-container{width:100%;height:6px;background:#f0f0f0;margin:0;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,#646cff,#4a90e2);transition:width .5s cubic-bezier(.4,0,.2,1)}.profile-name-row{display:flex;align-items:center;gap:15px;margin-bottom:5px;flex-wrap:wrap}.level-badge{padding:6px 14px;border-radius:100px;color:#fff;font-size:.8rem;font-weight:800;text-transform:uppercase;letter-spacing:.5px;box-shadow:0 4px 12px #0000001a;display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.2)}.level-starter{background:#95a5a6}.level-pro{background:linear-gradient(135deg,#e67e22,#d35400)}.level-master{background:linear-gradient(135deg,#9b59b6,#8e44ad)}.level-legend{background:linear-gradient(135deg,#f1c40f,#f39c12);box-shadow:0 0 15px #f1c40f66}.leaderboard-wrapper{max-width:800px;margin:40px auto;animation:fadeIn .5s ease-out}.leaderboard-title{text-align:center;font-size:2.5rem;font-weight:900;margin-bottom:40px;background:linear-gradient(135deg,#2d3436,#646cff);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.leaderboard-list{background:#fff;border-radius:30px;overflow:hidden;box-shadow:0 20px 50px #0000000d;border:1px solid #f1f2f6}.leader-item{display:flex;align-items:center;padding:15px 20px;background:#fff;margin-bottom:12px;border-radius:16px;transition:transform .2s ease}.rank-gold{background:linear-gradient(90deg,#fff9e6,#fff);border:1px solid #ffd700}.rank-gold .leader-rank{color:#ffab00;font-size:1.5rem}.rank-silver{border:1px solid #c0c0c0}.rank-bronze{border:1px solid #cd7f32}.current-user-highlight{border:2px solid #646cff;box-shadow:0 4px 15px #646cff33}.you-badge{position:absolute;bottom:-5px;right:-5px;background:#646cff;color:#fff;font-size:.6rem;padding:2px 6px;border-radius:8px;font-weight:700}.avatar-wrapper{position:relative}.leader-item:last-child{border-bottom:none}.leader-item:hover{background:#f8faff}.leader-rank{font-size:1.2rem;font-weight:800;color:#b2bec3;width:40px}.leader-item:nth-child(1) .leader-rank{color:#f1c40f;font-size:1.5rem}.leader-item:nth-child(2) .leader-rank{color:#95a5a6}.leader-item:nth-child(3) .leader-rank{color:#cd7f32}.leader-avatar{width:50px;height:50px;border-radius:50%;margin:0 20px;border:2px solid #f0f1ff}.leader-name{flex-grow:1;font-weight:700;font-size:1.1rem;color:#2d3436}.leader-score{font-weight:800;color:#646cff;font-size:1.2rem;background:#f0f1ff;padding:5px 15px;border-radius:12px}.promo-banner-card{background:linear-gradient(135deg,#646cff,#4a90e2);border-radius:20px;padding:25px 30px;margin-bottom:30px;display:flex;justify-content:space-between;align-items:center;color:#fff;box-shadow:0 10px 25px #646cff33;text-align:left}.promo-content h3{margin:0 0 5px;font-size:1.4rem;font-weight:800}.promo-content p{margin:0;opacity:.9;font-size:.95rem}.promo-banner-card .auth-btn.login{background:#fff;color:#646cff;white-space:nowrap;margin-left:20px;padding:12px 25px;box-shadow:0 4px 10px #0000001a}.burger-icon{display:none;flex-direction:column;justify-content:space-around;width:28px;height:20px;cursor:pointer;z-index:2000;margin-left:auto}.burger-icon span{width:100%;height:3px;background-color:#646cff;border-radius:5px;transition:all .3s ease}.burger-icon.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}.burger-icon.open span:nth-child(2){opacity:0;transform:translate(-20px)}.burger-icon.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}.loader-container{position:fixed;top:0;left:0;width:100vw;height:100vh;z-index:9999;background-color:#fcfcfc;display:flex;justify-content:center;align-items:center;animation:fadeInEffect .5s ease-out}.loader-content{text-align:center;max-width:90%;display:flex;flex-direction:column;align-items:center}.brain-icon{font-size:4.5rem;margin-bottom:30px;filter:drop-shadow(0 0 15px rgba(118,74,188,.2));animation:pulseBrain 1.5s ease-in-out infinite}.loader-text-wrapper{min-height:150px;display:flex;flex-direction:column;align-items:center;justify-content:center}.loader-eng{font-family:Montserrat,sans-serif;font-size:2.2rem;font-weight:800;color:#764abc;margin:0;letter-spacing:-1px}.loader-rus{font-family:Montserrat,sans-serif;font-size:1.2rem;color:#666;font-style:italic;margin-top:15px;opacity:0;transform:translateY(10px);transition:all .6s ease}.loader-rus.visible{opacity:1;transform:translateY(0)}.cursor{display:inline-block;width:3px;height:1.2em;background-color:#764abc;margin-left:5px;animation:blinkCursor .8s step-end infinite}.progress-bar{width:280px;height:4px;background-color:#eee;border-radius:10px;overflow:hidden;margin-top:40px}.progress-fill{width:100%;height:100%;background:linear-gradient(90deg,#764abc,#61dafb,#764abc);background-size:200% 100%;animation:shimmerEffect 2s linear infinite}.main-wrapper{opacity:0;width:100%;min-height:100vh}.main-wrapper.is-ready{display:block;opacity:1;transition:opacity .5s ease}.fade-in{animation:fadeInKeyframe .5s ease-in forwards}@media(min-width:769px){.navbar-links{display:flex!important;position:static!important;transform:none!important;right:auto!important;width:auto!important;height:auto!important;background:transparent!important;box-shadow:none!important;padding:0!important;visibility:visible!important;opacity:1!important}.burger-icon,.nav-overlay{display:none!important}}@media(max-width:768px){.app-container{padding:10px;overflow-x:hidden}.navbar{padding:15px 20px}.navbar-links:not(.show){display:none!important}.burger-icon{display:flex;flex-direction:column;gap:5px;cursor:pointer;z-index:2500}.burger-icon span{width:25px;height:3px;background-color:#333;border-radius:2px;transition:all .3s cubic-bezier(.4,0,.2,1)}.burger-icon.open span:nth-child(1){transform:translateY(8px) rotate(45deg);background-color:#ff4d4f}.burger-icon.open span:nth-child(2){opacity:0;transform:translate(-10px)}.burger-icon.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg);background-color:#ff4d4f}.navbar-links{position:fixed;justify-content:flex-start;top:0;right:-100%;width:280px;height:100vh;background:#fff;flex-direction:column;padding:100px 30px 40px;gap:15px;transition:right .4s cubic-bezier(.4,0,.2,1);z-index:2000}.navbar-links a{font-size:1rem!important;font-weight:700!important;color:#636e72!important;padding:12px 0;display:block;-webkit-font-smoothing:antialiased}.nav-user-wrapper{display:flex;flex-direction:column;gap:20px;width:100%;margin-top:15px;padding-top:20px;border-top:1px solid #f1f2f6}.nav-profile-link{display:flex!important;flex-direction:row!important;align-items:center!important;gap:12px!important;padding:0!important;width:auto}.nav-username{font-size:1.1rem!important;font-weight:600!important;color:#636e72!important;white-space:nowrap!important;margin:0!important}.nav-avatar,.nav-avatar-placeholder{width:32px!important;height:32px!important;flex-shrink:0;border-radius:50%}.auth-btn.logout{margin:0!important;width:100%;text-align:center;padding:10px!important;font-size:.9rem!important}.navbar-brand a{font-size:1.5rem}.navbar-links.show{display:flex!important;position:fixed!important;top:0!important;right:0!important;width:280px!important;height:100vh!important;background:#fff!important;flex-direction:column!important;padding:100px 30px 40px!important;z-index:2000!important;box-shadow:-10px 0 30px #0000001a!important;animation:slideInMenu .3s ease-out}.navbar-links.show li{animation:slideInNav .4s ease forwards;opacity:0}.navbar-links.show li:nth-child(1){animation-delay:.1s}.navbar-links.show li:nth-child(2){animation-delay:.15s}.navbar-links.show li:nth-child(3){animation-delay:.2s}.navbar-links.show li:nth-child(4){animation-delay:.25s}.navbar-links.show li:nth-child(5){animation-delay:.3s}.navbar-links.show li:nth-child(6){animation-delay:.35s}.nav-overlay{display:block;position:fixed;top:0;left:0;width:100vw;height:100vh;background:#00000080;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:1500}.profile-user-card{flex-direction:column!important;padding:25px 15px!important}.profile-email-text{font-size:.9rem!important;word-break:break-all;white-space:normal;margin-bottom:20px!important}.profile-stats-row{flex-direction:column!important;width:100%!important}.stat-item{flex-direction:row!important;justify-content:space-between!important;width:100%!important}}@keyframes fadeInEffect{0%{opacity:0}to{opacity:1}}@keyframes fadeInKeyframe{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseBrain{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}@keyframes blinkCursor{0%,to{opacity:0}50%{opacity:1}}@keyframes shimmerEffect{0%{background-position:200% 0}to{background-position:-200% 0}}@keyframes slideInNav{0%{transform:translate(30px);opacity:0}to{transform:translate(0);opacity:1}}@keyframes slideInMenu{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@media(max-width:450px){.profile-main-avatar{width:75px;height:75px}.profile-email-text{width:100%!important;font-size:.9rem!important;word-break:break-all!important;white-space:normal!important}.profile-avatar-container{margin-right:0!important;margin-bottom:10px!important}.profile-name{width:100%!important;font-size:1.1rem!important;margin:15px 0 10px!important;word-break:break-all!important;overflow-wrap:break-word!important;white-space:normal!important;line-height:1.3!important}.profile-user-card{display:flex!important;flex-direction:column!important;align-items:center!important;padding:30px 15px!important;width:100%!important;box-sizing:border-box!important;text-align:center!important}.idioms-grid{grid-template-columns:1fr!important;gap:15px}.profile-stats-row{width:100%!important;margin-top:20px!important}.stat-item{display:flex!important;justify-content:space-between!important;align-items:center!important;width:100%!important;padding:12px 0!important;border-bottom:1px solid #eee!important}.stat-value{font-size:1.1rem!important}}