:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a24;--text-primary: #f5f5f7;--text-secondary: #9ca3af;--text-tertiary: #6b7280;--accent-primary: #1e40af;--accent-secondary: #B91C1C;--accent-tertiary: #D4A72C;--accent-gradient: linear-gradient(135deg, #1e40af 0%, #1e3a5f 50%, #B91C1C 100%);--accent-gradient-light: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);--accent-glow: rgba(30, 64, 175, .3);--accent-glow-intense: rgba(30, 64, 175, .5);--accent-blue-glow: rgba(30, 64, 175, .4);--border-subtle: rgba(255, 255, 255, .08);--border-focus: #B91C1C;--panel-glass: rgba(18, 18, 26, .85);--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing-md: 1.25rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--radius-xs: 4px;--radius-sm: 8px;--radius-md: 14px;--radius-lg: 24px;--radius-full: 9999px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .2);--shadow-md: 0 8px 32px rgba(0, 0, 0, .4);--shadow-glow: 0 0 20px var(--accent-glow);--transition-fast: .15s cubic-bezier(.4, 0, .2, 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rgba(30,64,175,.2);border-radius:16px;padding:20px;margin-bottom:24px}.semester-badge{display:inline-block;padding:8px 16px;background:linear-gradient(145deg,#1e40af,#1e3a5f);border-radius:24px;font-size:14px;font-weight:700;color:#fff;margin-bottom:12px;box-shadow:0 4px 12px #1e40af4d}.semester-info p{margin:0;color:var(--text-secondary, #9ca3af);font-size:15px;line-height:1.6}.semester-info strong{color:var(--text-primary, #f5f5f7)}.custom-semester-toggle{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:#ffffff08;border:1px solid var(--border-subtle, rgba(255, 255, 255, .08));border-radius:16px;margin-bottom:24px;transition:all .3s ease}.custom-semester-toggle:hover{background:#1e40af0d;border-color:#1e40af33}.toggle-info{display:flex;flex-direction:column;gap:4px}.toggle-label{font-size:15px;font-weight:700;color:var(--text-primary)}.toggle-sublabel{font-size:12px;color:var(--text-tertiary)}.switch{position:relative;display:inline-block;width:48px;height:26px;flex-shrink:0}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background-color:var(--bg-tertiary);transition:.4s;border:1px solid var(--border-subtle)}.slider:before{position:absolute;content:"";height:18px;width:18px;left:4px;bottom:3px;background-color:var(--text-secondary);transition:.4s}input:checked+.slider{background-color:var(--accent-primary);border-color:transparent}input:checked+.slider:before{transform:translate(22px);background-color:#fff}.slider.round{border-radius:34px}.slider.round:before{border-radius:50%}.semester-select{animation:fadeIn .3s ease}.btn-primary,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:16px 28px;border-radius:14px;font-size:16px;font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(.16,1,.3,1);border:none;font-family:inherit}.btn-primary{background:linear-gradient(145deg,#1e40af,#1e3a5f);color:#fff;box-shadow:0 4px 20px #1e40af4d}.btn-primary:hover:not(:disabled){transform:translateY(-3px);box-shadow:0 12px 35px #1e40af73}.btn-primary:active:not(:disabled){transform:translateY(-1px)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-secondary{background:var(--bg-tertiary, #1a1a24);color:var(--text-primary, #f5f5f7);border:2px solid var(--border-subtle, rgba(255, 255, 255, .08))}.btn-secondary:hover{background:var(--bg-secondary, #12121a);border-color:#b91c1c4d}.button-group{display:flex;align-items:stretch;justify-content:stretch;gap:16px;margin-top:32px;width:100%}.button-group button{flex:1;white-space:nowrap;min-height:54px;padding:16px 20px;display:flex;align-items:center;justify-content:center}.error-message{display:flex;align-items:center;gap:10px;padding:14px 18px;background:#ef44441a;border:1px solid rgba(239,68,68,.25);border-radius:12px;color:#f87171;font-size:14px;margin-bottom:20px;font-weight:500}.spinner{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.onboarding-footer{text-align:center;margin-top:40px;padding-top:28px;border-top:1px solid var(--border-subtle, rgba(255, 255, 255, .08))}.onboarding-footer p{margin:0;font-size:13px;color:var(--text-tertiary, #6b7280)}.tu-footer-badge{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:12px;color:var(--text-tertiary)}.tu-footer-badge img{width:20px;height:20px;border-radius:4px}@media(max-width:520px){.onboarding-container{padding:40px 16px 16px;align-items:flex-start}.onboarding-card{padding:36px 24px;border-radius:20px}.onboarding-logo{width:72px;height:72px}.onboarding-header h1{font-size:26px}.progress-step{width:32px;height:32px;font-size:13px}.progress-line{width:50px}.button-group{flex-direction:column-reverse}.button-group .btn-secondary,.button-group .btn-primary{width:100%}}@keyframes slideUp{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}