@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--bg-dark: #0a0a0f;--bg-surface: #12121a;--glass-bg: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .1);--glass-highlight: rgba(255, 255, 255, .15);--primary: #8b5cf6;--primary-glow: rgba(139, 92, 246, .4);--secondary: #06b6d4;--secondary-glow: rgba(6, 182, 212, .4);--success: #22c55e;--danger: #ef4444;--warning: #f97316;--info: #3b82f6;--text-main: #f8fafc;--text-muted: #94a3b8;--font-family: "Inter", sans-serif;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--radius-sm: .5rem;--radius-md: 1rem;--radius-lg: 1.5rem;--radius-full: 9999px;--transition-fast: .15s ease-out;--transition-normal: .3s cubic-bezier(.4, 0, .2, 1);--transition-bounce: .5s cubic-bezier(.34, 1.56, .64, 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p{color:var(--text-muted);margin-bottom:1.5rem}.empty-text{color:var(--text-muted);text-align:center;padding:1rem;font-size:.9rem}.btn-large{width:100%;padding:1rem;font-size:1.1rem;border-radius:var(--radius-lg)}.btn-secondary{background:linear-gradient(135deg,var(--secondary),#22d3ee);color:#fff;box-shadow:0 4px 15px var(--secondary-glow)}.btn-secondary:hover{filter:brightness(1.1);box-shadow:0 6px 20px var(--secondary-glow)}.create-container h2{margin-top:.5rem}.create-form,.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.85rem;font-weight:600;color:var(--text-muted);margin-bottom:.4rem;text-transform:uppercase;letter-spacing:.05em}select,input[type=text],textarea{width:100%;padding:.75rem;font-size:.95rem;font-family:inherit;background:#ffffff0d;border:1px solid var(--glass-border);border-radius:var(--radius-sm);color:var(--text-main);outline:none;transition:border-color 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.card-label{color:var(--secondary)}.flashcard-back .card-label{color:var(--primary)}.card-text{font-size:1.2rem;font-weight:500;line-height:1.6;color:var(--text-main);word-break:break-word;white-space:pre-wrap}.card-deck-badge{margin-top:1rem;font-size:.75rem;color:var(--text-muted);background:#ffffff0d;padding:.2rem .6rem;border-radius:var(--radius-full)}.study-controls{margin-top:auto}.rating-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:.5rem;animation:slideUp .3s ease}.btn-rating{display:flex;flex-direction:column;align-items:center;gap:.25rem;padding:.7rem .3rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-md);cursor:pointer;transition:all .15s ease;font-family:inherit;color:var(--text-main);border-bottom:3px solid var(--rating-color, var(--glass-border))}.btn-rating:hover{background:#ffffff14;transform:translateY(-2px);border-color:var(--rating-color)}.btn-rating:active{transform:scale(.95)}.rating-emoji{font-size:1.2rem}.rating-label{font-size:.7rem;font-weight:600;letter-spacing:.02em}.rating-interval{font-size:.65rem;color:var(--text-muted);font-weight:400}.cards-container h2{margin-bottom:.75rem}.cards-header{margin-bottom:1rem}.search-bar{margin-bottom:.75rem}.search-bar input{width:100%;padding:.65rem 1rem;font-size:.9rem;font-family:inherit;background:#ffffff0d;border:1px solid var(--glass-border);border-radius:var(--radius-full);color:var(--text-main);outline:none;transition:border-color .15s}.search-bar input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.deck-filters{display:flex;gap:.4rem;flex-wrap:wrap}.chip{font-size:.75rem;font-weight:500;padding:.3rem .7rem;border-radius:var(--radius-full);background:var(--glass-bg);border:1px solid 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var(--glass-border);border-radius:var(--radius-full);font-size:.8rem;font-weight:500;color:var(--text-muted);white-space:nowrap;cursor:pointer;transition:all var(--transition-fast)}.chip.active{background:#8b5cf626;border-color:var(--primary);color:var(--primary)}.card-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.card-preview{display:flex;flex-direction:column;gap:var(--spacing-xs);cursor:pointer}.card-preview-header{display:flex;justify-content:space-between;align-items:center}.deck-badge{font-size:.65rem;padding:.15rem .5rem;background:#ffffff1a;border-radius:var(--radius-sm);color:var(--secondary)}.due-date{font-size:.7rem;color:var(--text-muted)}.due-soon{color:var(--warning)}.overdue{color:var(--danger);font-weight:600}.card-question-text{font-size:.9rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.deck-explorer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md);margin-bottom:var(--spacing-xl)}.deck-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:var(--spacing-sm);cursor:pointer;position:relative;overflow:hidden}.deck-card:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,transparent,rgba(255,255,255,.02));z-index:0}.deck-emoji{font-size:2.5rem;z-index:1}.deck-title{font-weight:600;font-size:.95rem;z-index:1}.deck-count{font-size:.75rem;color:var(--text-muted);background:var(--glass-bg);padding:.2rem .6rem;border-radius:var(--radius-full);z-index:1}.fab-btn{position:absolute;bottom:calc(80px + var(--spacing-md));right:var(--spacing-md);width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;box-shadow:0 4px 15px var(--primary-glow);border:none;cursor:pointer;z-index:50;transition:transform var(--transition-bounce),box-shadow var(--transition-fast)}.fab-btn:hover{transform:scale(1.1) rotate(90deg);box-shadow:0 6px 20px #06b6d466}.form-group{margin-bottom:var(--spacing-md)}.form-label{display:block;font-size:.8rem;color:var(--text-muted);margin-bottom:var(--spacing-xs);font-weight:500}.form-control{width:100%;background:#0003;border:1px solid var(--glass-border);border-radius:var(--radius-sm);color:var(--text-main);padding:var(--spacing-sm) var(--spacing-md);font-family:inherit;font-size:1rem;transition:border-color var(--transition-fast)}.form-control:focus{outline:none;border-color:var(--primary);background:#0006}textarea.form-control{resize:vertical;min-height:100px}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0a0a0fcc;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);z-index:1000;display:flex;align-items:center;justify-content:center;padding:var(--spacing-md);opacity:0;pointer-events:none;transition:opacity var(--transition-fast)}.modal-overlay.active{opacity:1;pointer-events:auto}.modal-content{width:100%;max-width:400px;transform:scale(.95);transition:transform var(--transition-bounce)}.modal-overlay.active .modal-content{transform:scale(1)}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-md)}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md);margin-bottom:var(--spacing-lg)}.stat-card{text-align:center;padding:var(--spacing-lg) var(--spacing-md)}.stat-value{font-size:2rem;font-weight:700;background:linear-gradient(135deg,var(--text-main),var(--text-muted));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:var(--spacing-xs)}.stat-label{font-size:.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px}.chart-container{height:150px;display:flex;align-items:flex-end;gap:8px;padding:var(--spacing-md) 0;border-bottom:1px solid var(--glass-border)}.chart-bar{flex:1;background:linear-gradient(to top,var(--primary),var(--secondary));border-radius:4px 4px 0 0;min-height:4px;position:relative;transition:height 1s ease-out;opacity:.8}.chart-bar:hover{opacity:1;box-shadow:0 0 10px var(--primary-glow)}