@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Inter:wght@400;500;600&display=swap";:root{--primary:#0b132b;--secondary:#1c2541;--tertiary:#3a506b;--accent:#10b981;--accent-glow:#10b98166;--surface:#0f172a;--surface-card:#1c2541b3;--text-main:#f8fafc;--text-muted:#94a3b8;--error:#ef4444;--success:#10b981;--warning:#f59e0b;--radius:20px;--shadow-subtle:0 8px 32px #0003;--shadow-glow:0 0 20px #10b98133}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0;font-family:Outfit,Inter,sans-serif}body{background-color:var(--primary);color:var(--text-main);background-image:radial-gradient(circle at 15%,#10b9810d,#0000 25%),radial-gradient(circle at 85% 30%,#3a506b1a,#0000 25%);flex-direction:column;height:100vh;display:flex;overflow:hidden}#app{background:0 0;flex-direction:column;width:100%;max-width:480px;height:100%;margin:0 auto;display:flex;position:relative}#main-content{scrollbar-width:none;flex:1;padding:24px 24px 100px;overflow-y:auto}#main-content::-webkit-scrollbar{display:none}h1{color:#fff;letter-spacing:-.5px;margin-bottom:8px;font-size:2rem;font-weight:800}h2{color:#fff;letter-spacing:-.5px;margin-bottom:20px;font-size:1.5rem;font-weight:700}p{color:var(--text-muted);font-size:1rem;line-height:1.6}.glass-panel{background:var(--surface-card);-webkit-backdrop-filter:blur(12px);border-radius:var(--radius);box-shadow:var(--shadow-subtle);border:1px solid #ffffff14}#bottom-nav{-webkit-backdrop-filter:blur(20px);z-index:100;background:#0b132bd9;border:1px solid #ffffff1a;border-radius:24px;justify-content:space-around;align-items:center;height:70px;display:flex;position:absolute;bottom:16px;left:16px;right:16px;box-shadow:0 10px 40px #00000080}.nav-btn{color:#64748b;cursor:pointer;background:0 0;border:none;flex-direction:column;justify-content:center;align-items:center;gap:6px;width:25%;font-size:.75rem;font-weight:600;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex}.nav-btn svg{width:24px;height:24px;transition:all .3s cubic-bezier(.4,0,.2,1)}.nav-btn.active{color:var(--accent)}.nav-btn.active svg{stroke:var(--accent);filter:drop-shadow(0 4px 6px var(--accent-glow));transform:translateY(-4px)scale(1.1)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.view-section{animation:.5s cubic-bezier(.16,1,.3,1) forwards fadeInUp;display:none}.view-section.active{flex-direction:column;display:flex}.dashboard-header{margin-top:10px;margin-bottom:32px}.streak-card{border-radius:var(--radius);box-shadow:var(--shadow-glow);background:linear-gradient(135deg,#10b98126,#10b98105);border:1px solid #10b9814d;justify-content:space-between;align-items:center;margin-bottom:24px;padding:24px;display:flex;position:relative;overflow:hidden}.streak-card:after{content:"";background:radial-gradient(circle,#10b98133 0%,#0000 70%);border-radius:50%;width:150px;height:150px;position:absolute;top:-50%;right:-20%}.streak-info h3{color:#fff;margin-bottom:2px;font-size:3rem;font-weight:800;line-height:1}.streak-info p{color:var(--accent);text-transform:uppercase;letter-spacing:1px;font-size:.9rem;font-weight:600}.fire-icon{filter:drop-shadow(0 4px 15px #f59e0b99);font-size:3.5rem;transform:scale(1.1)}.stats-overview{grid-template-columns:1fr 1fr;gap:16px;margin-bottom:32px;display:grid}.stat-box{text-align:center;padding:20px 16px}.stat-box h4{color:#fff;margin-bottom:4px;font-size:1.75rem;font-weight:700}.stat-box p{text-transform:uppercase;letter-spacing:.5px;font-size:.8rem}.quick-actions{grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px;display:grid}.action-card{text-align:center;cursor:pointer;flex-direction:column;align-items:center;gap:16px;padding:24px 20px;transition:all .3s cubic-bezier(.16,1,.3,1);display:flex}.action-card:hover{background:#ffffff0d;transform:translateY(-4px)}.action-card:active{transform:scale(.96)}.action-icon{background:#ffffff0d;border-radius:16px;justify-content:center;align-items:center;width:56px;height:56px;font-size:1.75rem;display:flex;box-shadow:inset 0 2px 10px #ffffff0d}.action-card h4{color:#fff;font-size:1rem;font-weight:600}.flashcard-container{perspective:1000px;width:100%;height:420px;margin:20px 0}.flashcard{width:100%;height:100%;transform-style:preserve-3d;cursor:pointer;transition:transform .6s cubic-bezier(.4,0,.2,1);position:relative}.flashcard.flipped{transform:rotateY(180deg)}.card-face{backface-visibility:hidden;text-align:center;background:linear-gradient(145deg,#1e293be6,#0f172ae6);border:1px solid #ffffff1a;border-radius:28px;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;padding:32px;display:flex;position:absolute;box-shadow:0 20px 50px #00000080,inset 0 1px #ffffff1a}.card-front h2{color:#fff;text-shadow:0 4px 20px #0000004d;margin:0;font-size:3rem}.card-back{scrollbar-width:none;background:linear-gradient(145deg,#1c2541f2,#0b132bf2);justify-content:flex-start;overflow-y:auto;transform:rotateY(180deg)}.card-back .word-title{color:var(--accent);margin-top:10px;margin-bottom:20px;font-size:2rem;font-weight:800}.card-back .definition{color:#fff;background:#0003;border-radius:12px;width:100%;margin-bottom:30px;padding:16px;font-size:1.15rem;font-weight:400;line-height:1.6}.syn-ant{text-align:left;flex-direction:column;gap:20px;width:100%;display:flex}.tag-section{flex-direction:column;gap:8px;display:flex}.tag-section p{color:#94a3b8;text-transform:uppercase;letter-spacing:1px;font-size:.85rem;font-weight:600}.tag-container{flex-wrap:wrap;gap:10px;display:flex}.tag{background:#ffffff0d;border:1px solid #ffffff1a;border-radius:10px;padding:6px 14px;font-size:.9rem;font-weight:500}.tag-syn{color:#34d399;background:#34d3991a;border-color:#34d39933}.tag-ant{color:#fb7185;background:#fb71851a;border-color:#fb718533}.card-actions{opacity:0;pointer-events:none;justify-content:center;gap:32px;margin-top:30px;transition:opacity .4s;display:flex}.card-actions.visible{opacity:1;pointer-events:all}.btn-action{cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:70px;height:70px;font-size:1.75rem;transition:all .2s cubic-bezier(.16,1,.3,1);display:flex;box-shadow:0 10px 25px #0000004d}.btn-action:active{transform:scale(.9)}.btn-nope{color:#ef4444;background:#ef44441a;border:2px solid #ef4444}.btn-yep{color:#10b981;background:#10b9811a;border:2px solid #10b981}.btn-nope:hover{background:#ef444433;box-shadow:0 0 20px #ef444466}.btn-yep:hover{background:#10b98133;box-shadow:0 0 20px #10b98166}.progress-container{background:#ffffff0d;border-radius:4px;width:100%;height:8px;margin-bottom:20px;overflow:hidden;box-shadow:inset 0 1px 3px #00000080}.progress-bar{background:linear-gradient(90deg,#10b981,#34d399);border-radius:4px;width:0%;height:100%;transition:width .4s cubic-bezier(.16,1,.3,1)}.mcq-container{margin-bottom:20px;padding:24px}.question-text{color:#fff;margin-bottom:30px;font-size:1.25rem;font-weight:500;line-height:1.6}.options-list{flex-direction:column;gap:16px;display:flex}.option-btn{color:#e2e8f0;text-align:left;cursor:pointer;background:#ffffff0d;border:2px solid #ffffff1a;border-radius:16px;justify-content:space-between;align-items:center;padding:18px 20px;font-size:1.05rem;font-weight:500;transition:all .2s cubic-bezier(.16,1,.3,1);display:flex}.option-btn:hover:not(:disabled){background:#ffffff1a;border-color:#fff3;transform:translate(4px)}.option-btn.selected{background:#3b82f626;border-color:#3b82f6;box-shadow:0 0 15px #3b82f64d}.option-btn.correct{border-color:var(--success);color:#34d399;background:#10b98126;box-shadow:0 0 20px #10b98133}.option-btn.wrong{border-color:var(--error);color:#fb7185;background:#ef444426}.option-btn:disabled{cursor:default}.explanation{color:#e2e8f0;background:#10b9810d;border:1px solid #10b98133;border-radius:16px;margin-top:24px;padding:20px;font-size:1rem;line-height:1.6;display:none}.explanation.visible{animation:.4s fadeInUp;display:block}.action-btn-large{background:var(--accent);color:#fff;cursor:pointer;text-transform:uppercase;letter-spacing:1px;border:none;border-radius:16px;width:100%;margin-top:30px;padding:18px;font-size:1.1rem;font-weight:700;transition:all .2s;display:none;box-shadow:0 10px 25px #10b9814d}.action-btn-large:hover{transform:translateY(-2px);box-shadow:0 12px 30px #10b98166}.action-btn-large:active{transform:translateY(2px)}.action-btn-large.visible{animation:.3s fadeInUp;display:block}#check-btn{background:#3b82f6;box-shadow:0 10px 25px #3b82f64d}#check-btn:hover{box-shadow:0 12px 30px #3b82f666}.pill{color:#fff;letter-spacing:.5px;background:#ffffff1a;border:1px solid #ffffff1a;border-radius:20px;padding:6px 14px;font-size:.8rem;font-weight:600;display:inline-block}.category-scroll{scrollbar-width:none;gap:12px;margin-bottom:24px;padding-bottom:16px;display:flex;overflow-x:auto}.cat-btn{white-space:nowrap;color:#94a3b8;cursor:pointer;background:#ffffff0d;border:1px solid #ffffff1a;border-radius:24px;padding:12px 24px;font-size:.95rem;font-weight:600;transition:all .3s}.cat-btn.active{background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 4px 15px #10b9814d}.cat-btn:hover:not(.active){color:#fff;background:#ffffff1a}