:root{--color-bg: #0B1221;--color-primary: #00F5D4;--color-secondary: #9B5DE5;--color-text: #FFFFFF;--color-text-muted: #A0AEC0;--font-family: "Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--color-bg);color:var(--color-text);font-family:var(--font-family);overflow-x:hidden;line-height:1.5}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-15px)}to{transform:translateY(0)}}@keyframes glow{0%{box-shadow:0 0 5px #00f5d433}50%{box-shadow:0 0 20px #00f5d480}to{box-shadow:0 0 5px #00f5d433}}.floating{animation:float 4s ease-in-out infinite}.glow{animation:glow 3s ease-in-out infinite}.glass{background:#ffffff0d;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);border-radius:16px}h1,h2,h3{font-weight:700;letter-spacing:-.02em}.text-gradient{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.study-container.live-style{position:fixed;top:0;left:0;width:100%;height:100%;z-index:2000;display:flex;flex-direction:column;padding:0;overflow:hidden;background:#0b1221}.study-header{display:flex;justify-content:space-between;align-items:center;padding:1rem;height:60px;background:#0003;border-bottom:1px solid rgba(255,255,255,.05)}.study-header .back-button{position:static;padding:.4rem .8rem;font-size:.9rem}.study-progress{color:#fff;font-size:1.1rem;font-weight:700}.study-progress .current{color:var(--color-primary)}.study-progress .total{opacity:.5;font-size:.9rem}.study-score{color:gold;font-weight:700}.study-content-scroll{flex:1;overflow-y:auto;padding:1rem 1rem 120px;max-width:800px;margin:0 auto;width:100%;box-sizing:border-box}.question-view{animation:slideUp .3s ease-out}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.options-text-list{margin-top:2rem;display:flex;flex-direction:column;gap:.4rem}.option-text-item{display:flex;align-items:flex-start;padding:1rem;background:#ffffff08;border-radius:8px;border:1px solid transparent;transition:all .2s}.option-text-item.is-correct{background:#00f5d41a;border-color:var(--color-primary)}.option-text-item.selected-preview{background:#ffffff14}.option-text-item .option-number{font-weight:700;color:var(--color-primary);margin-right:.8rem;min-width:20px}.option-text-item .option-content{color:#ffffffe6;line-height:1.6;flex:1;font-size:1.05rem}.correct-badge{background:var(--color-primary);color:#000;padding:2px 8px;border-radius:4px;font-size:.75rem;font-weight:700;margin-left:.5rem;white-space:nowrap}.inline-answer-actions{margin-top:2rem;display:flex;justify-content:center;width:100%}.centered-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;width:100%;max-width:400px}.sphere-actions{display:flex;justify-content:space-between;align-items:center;width:100%;margin-bottom:1.2rem}.category-tag{font-size:.9rem;color:#ffffffb3;background:#ffffff14;padding:.4rem .8rem;border-radius:20px;font-weight:500}.question-text{font-size:1.35rem;line-height:1.55;margin-bottom:2rem;font-weight:700;white-space:pre-wrap;word-break:keep-all}.explanation-btn{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);padding:.4rem 1rem;min-width:fit-content;height:auto;border-radius:20px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease;color:#fff;font-size:.9rem;font-weight:600;margin-left:auto}.explanation-btn:hover{background:#fff3;transform:scale(1.05)}.live-opt-btn{aspect-ratio:1;width:100%;max-width:65px;height:auto;padding:0;margin:0 auto;border-radius:50%;background:#ffffff14;border:2px solid rgba(255,255,255,.1);color:#fff;font-size:1.3rem;font-weight:700;cursor:pointer;transition:all .2s cubic-bezier(.175,.885,.32,1.275);display:flex;align-items:center;justify-content:center}.live-opt-btn:active{transform:scale(.95)}.live-opt-btn.selected{background:#4facfe;border-color:#4facfe;color:#fff;transform:scale(1.1);box-shadow:0 0 15px #4facfe80}.live-opt-btn.correct-flash{background:#00f2fe!important;color:#fff;box-shadow:0 0 15px #00f2fe66;animation:flash-green .5s infinite}.live-opt-btn.wrong-flash{background:#ff4d4d!important;color:#fff;box-shadow:0 0 15px #ff4d4d66;animation:flash-red .5s infinite}.question-context{padding:1rem;background:#ffffff0d;border-radius:12px;margin-bottom:0;border:1px solid rgba(255,255,255,.1)}.context-image{max-width:100%;max-height:500px;border-radius:8px;margin-bottom:12px;display:block;margin-left:auto;margin-right:auto;object-fit:contain;cursor:zoom-in;box-shadow:0 4px 12px #0003;transition:transform .2s;filter:invert(1) grayscale(1) brightness(1.5) contrast(1.2);mix-blend-mode:screen;background:transparent}.context-image:hover{transform:scale(1.02)}.context-text{width:100%;text-align:left;white-space:pre-wrap}.summary-view{text-align:center;display:flex;flex-direction:column;align-items:center;gap:2rem}.summary-stats{display:flex;justify-content:center;gap:2rem;width:100%;margin:2rem 0}.stat-item{display:flex;flex-direction:column;align-items:center;gap:.5rem}.stat-item .label{font-size:.9rem;opacity:.7}.stat-item .value{font-size:2rem;font-weight:800}.stat-item .value.highlight{color:var(--color-primary)}.summary-actions{display:flex;gap:1rem;justify-content:center;width:100%}.summary-actions .back-button.primary{position:static;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);font-size:1rem;padding:.8rem 1.5rem}.summary-actions .back-button.primary:hover{background:#fff3}.summary-actions .retry-btn{font-size:1rem;padding:.8rem 1.5rem;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));border:none;color:#fff}.problem-sphere{width:100%;max-width:600px;padding:2rem;border-radius:16px;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);box-shadow:0 8px 32px #0000004d;margin:0 auto}.explanation-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000c;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:flex;justify-content:center;align-items:center;z-index:200;animation:fadeIn .3s}.explanation-modal{width:90%;max-width:600px;max-height:80vh;background:#141e2df2;border:1px solid rgba(255,255,255,.1);border-radius:16px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 10px 40px #00000080;animation:slideUpModal .3s cubic-bezier(.16,1,.3,1)}@keyframes slideUpModal{0%{transform:translateY(50px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;border-bottom:1px solid rgba(255,255,255,.1);background:#0003}.modal-header h3{margin:0;font-size:1.1rem;color:var(--color-primary)}.close-btn{background:none;border:none;color:#ffffff80;font-size:1.5rem;cursor:pointer;padding:0;line-height:1;transition:color .2s}.close-btn:hover{color:#fff}.modal-content{flex:1;overflow-y:auto;padding:1.5rem}.explanation-section{margin-bottom:2rem}.explanation-section .label{display:block;font-size:.9rem;color:#fff9;margin-bottom:.5rem;font-weight:700}.answer-text{font-size:1.2rem;font-weight:700;color:#4ade80}.explanation-body{line-height:1.6;color:#ffffffe6;white-space:pre-wrap}.law-section{background:#ffeb3b0d;border:1px solid rgba(255,235,59,.2);border-radius:8px;padding:1rem;margin-top:1rem}.law-section .label{color:#ffeb3b;margin-bottom:.8rem}.law-content strong{display:block;color:#fff;margin-bottom:.5rem}.law-content p{margin:0;font-size:.9rem;color:#ddd;line-height:1.5}.dashboard-container{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1000;background:#0a0a0ff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);overflow-y:auto;padding:2rem;box-sizing:border-box;color:#fff}.dashboard-content-wrapper{position:relative;z-index:1;pointer-events:none}.dashboard-content-wrapper>*{pointer-events:auto}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem;margin-bottom:2rem;width:100%}.stat-card{padding:1rem .5rem;border-radius:12px}.stat-card h3{font-size:.7rem}.stat-card .stat-value{font-size:1.5rem}.subject-grid{display:grid;grid-template-columns:1fr;gap:1rem}.subject-card{padding:1.2rem}.subject-card h4{font-size:.9rem}.dashboard-header h1{font-size:1.5rem;white-space:nowrap;margin:0}.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.nav-btn{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fff;padding:.5rem 1rem;border-radius:20px;cursor:pointer;transition:all .3s ease}.nav-btn:hover{background:#fff3}.error-note-btn{position:relative;background:#ff634733;border-color:#ff634780}.error-note-btn:hover{background:#ff634766}.badge{position:absolute;top:-8px;right:-8px;background:#ff4757;color:#fff;font-size:.7rem;width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700}.dashboard-primary-actions{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-bottom:25px}.action-card-btn{display:flex;align-items:center;gap:15px;padding:16px 20px;border:none;border-radius:16px;cursor:pointer;transition:all .3s ease;text-align:left;position:relative;overflow:hidden}.action-card-btn .icon{font-size:2rem}.action-card-btn .text-content{display:flex;flex-direction:column;gap:2px}.action-card-btn .main-text{font-size:1.1rem;font-weight:800;color:#fff}.action-card-btn .sub-text{font-size:.85rem;color:#ffffffb3}.roadmap-trigger{background:linear-gradient(135deg,#2196f333,#2196f31a);border:1px solid rgba(33,150,243,.3)}.roadmap-trigger:hover{background:linear-gradient(135deg,#2196f34d,#2196f333);transform:translateY(-2px);box-shadow:0 4px 15px #2196f333}.error-note-trigger{background:linear-gradient(135deg,#ff525233,#ff52521a);border:1px solid rgba(255,82,82,.3)}.error-note-trigger:hover{background:linear-gradient(135deg,#ff52524d,#ff525233);transform:translateY(-2px);box-shadow:0 4px 15px #ff525233}.mode-selector{display:flex;justify-content:center;gap:1rem;margin-bottom:2rem}.mode-tab{background:transparent;border:none;color:#fff9;font-size:1.2rem;padding:1rem 2rem;cursor:pointer;border-bottom:2px solid transparent;transition:all .3s ease}.mode-tab.active{color:#fff;border-bottom-color:var(--color-primary)}.filter-area{padding:2rem;border-radius:20px;margin-bottom:2rem;text-align:center}.filter-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem;margin-top:1.5rem}.filter-chip{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);color:#fffc;padding:1rem;border-radius:12px;cursor:pointer;transition:all .3s ease;display:flex;flex-direction:column;align-items:center;justify-content:center}.filter-chip:hover{background:#ffffff26;transform:translateY(-2px)}.filter-chip.selected{background:var(--color-primary);color:#000;border-color:var(--color-primary);font-weight:700;box-shadow:0 0 15px #00f3ff66}.filter-chip.disabled{opacity:.5;cursor:not-allowed;background:#0003}.sub-text{font-size:.7rem;opacity:.7;margin-top:4px}.action-area{text-align:center}.start-study-btn{padding:1rem 4rem;font-size:1.2rem;border-radius:30px;background:linear-gradient(90deg,var(--color-primary),#00a8ff);color:#fff;border:none;font-weight:700;cursor:pointer;transition:transform .2s,box-shadow .2s;opacity:.5;pointer-events:none}.start-study-btn:not(:disabled){opacity:1;pointer-events:auto}.start-study-btn:hover{transform:scale(1.05);box-shadow:0 0 30px #00f3ff80}.points-section{display:flex;justify-content:center;margin-bottom:2rem}.total-points-display{padding:1rem 2rem;background:#ffffff0d;border-radius:16px;display:flex;align-items:center;gap:1rem;border:1px solid rgba(255,255,255,.1);box-shadow:0 4px 15px #0003}.total-points-display .label{color:var(--color-text-muted);font-size:.95rem}.total-points-display .value{color:#f9d423;font-size:1.3rem;font-weight:700;text-shadow:0 0 10px rgba(249,212,35,.3)}.stats-overview{display:flex;justify-content:space-between;gap:1rem;margin-bottom:2rem;padding:1.5rem;border-radius:16px;background:#ffffff0d;border:1px solid rgba(255,255,255,.1)}.stat-card{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1rem;background:#0003;border-radius:12px;border:1px solid rgba(255,255,255,.05);transition:transform .3s ease}.stat-card:hover{transform:translateY(-5px);background:#ffffff1a}.stat-label{font-size:.9rem;color:#fff9;margin-bottom:.5rem}.stat-value{font-size:1.8rem;font-weight:700;color:#fff}.stat-value.highlight{color:var(--color-primary);text-shadow:0 0 10px rgba(0,243,255,.3)}.stat-value.error{color:#ff4757;text-shadow:0 0 10px rgba(255,71,87,.3)}.stat-value.points{color:#f9d423;text-shadow:0 0 10px rgba(249,212,35,.3)}.playing-indicator{font-size:.75rem;color:var(--color-primary);margin-top:5px;animation:blink 2s infinite;font-weight:700}@keyframes blink{0%,to{opacity:1}50%{opacity:.5}}.roadmap-container{width:100%;margin-bottom:20px;padding:20px;background:#ffffff0d;border-radius:16px;box-shadow:0 4px 15px #0000001a;color:#fff;font-family:Inter,sans-serif}.roadmap-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:20px}.header-left{display:flex;align-items:center;gap:10px}.roadmap-back-btn{background:none;border:none;color:#fff;font-size:1rem;cursor:pointer;padding:0}.roadmap-header h2{font-size:1.4rem;margin:0;background:linear-gradient(135deg,gold,orange);-webkit-background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}.current-status-badge.column-layout{display:flex;flex-direction:column;align-items:flex-end;gap:5px}.current-status-badge{font-size:1rem;color:#e0e0e0}.day-highlight{font-weight:700;color:#fff;font-size:1.1em;margin-right:8px}.phase-badge{padding:4px 10px;border-radius:20px;font-size:.85rem;font-weight:700;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.2)}.roadmap-track-container{position:relative;margin-bottom:30px;padding:0 10px}.roadmap-progress-bar{height:12px;background:#ffffff1a;border-radius:6px;position:relative;margin-bottom:10px;overflow:visible}.progress-fill{height:100%;background:linear-gradient(90deg,#2196f3,#00bcd4);border-radius:6px;transition:width 1s cubic-bezier(.4,0,.2,1)}.rocket-indicator{position:absolute;top:-14px;font-size:1.8rem;transform:translate(-50%) rotate(45deg);filter:drop-shadow(0 4px 6px rgba(0,0,0,.3));transition:left 1s cubic-bezier(.4,0,.2,1);z-index:10}.phase-markers{display:flex;position:relative;height:24px}.phase-marker{position:absolute;top:0;text-align:center;border-left:1px solid rgba(255,255,255,.2);font-size:.75rem;color:#aaa;transition:all .3s ease}.phase-marker.active{color:#fff;font-weight:700;text-shadow:0 0 10px rgba(255,255,255,.3)}.days-scale{display:flex;justify-content:space-between;font-size:.75rem;color:#666;margin-top:4px}.phase-details-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:15px}.phase-card{background:#ffffff08;border-radius:12px;padding:15px;border:1px solid rgba(255,255,255,.05);position:relative;transition:all .3s ease;opacity:.6}.phase-card.current{opacity:1;transform:translateY(-5px);background:#2196f31a;border-color:#2196f34d;box-shadow:0 8px 24px #0003}.phase-card.completed{opacity:.8;background:#2ecc710d;border-color:#2ecc7133}.phase-card-header{display:flex;justify-content:space-between;align-items:center;border-bottom:2px solid #ccc;padding-bottom:8px;margin-bottom:10px}.phase-card h4{margin:0;font-size:1.1rem;color:#fff}.gravity-meter{display:flex;flex-direction:column;align-items:flex-end;width:60px}.gravity-label{font-size:.6rem;color:#bbb;margin-bottom:2px}.gravity-bar-bg{width:100%;height:6px;background:#fff3;border-radius:3px;overflow:hidden}.gravity-bar-fill{height:100%;transition:width .5s ease}.phase-card-body{font-size:.9rem}.phase-desc{color:#ddd;margin:0 0 10px;font-weight:500}.phase-tasks{list-style:none;padding:0;margin:0}.phase-tasks li{position:relative;padding-left:15px;margin-bottom:4px;color:#aaa;font-size:.85rem}.phase-tasks li:before{content:"•";position:absolute;left:0;color:#2196f3}.current-indicator{position:absolute;top:-10px;right:15px;background:gold;color:#000;font-size:.7rem;font-weight:700;padding:2px 8px;border-radius:10px;box-shadow:0 2px 5px #0003;animation:bounce 2s infinite}@keyframes bounce{0%,20%,50%,80%,to{transform:translateY(0)}40%{transform:translateY(-5px)}60%{transform:translateY(-3px)}}@media(max-width:600px){.phase-details-grid{grid-template-columns:1fr}.roadmap-container{padding:15px}}.note-view-container{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1000;background:#0a0a0ff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);overflow-y:auto;padding:2rem;box-sizing:border-box;color:#fff}.stats-grid{display:flex;justify-content:center;gap:1rem;margin:2rem 0}.stat-card{flex:1;max-width:180px;padding:1rem;text-align:center;border-radius:16px;background:#ffffff0d;border:1px solid rgba(255,255,255,.1)}.stat-card h3{margin:0;font-size:1rem;opacity:.7;margin-bottom:.5rem}.stat-value{font-size:2.5rem;font-weight:800;color:var(--color-primary)}.stat-value.small{font-size:1.5rem;word-break:keep-all}.stat-sub{font-size:.8rem;opacity:.6;margin-top:.5rem}.section-title{margin-top:3rem;margin-bottom:1.5rem;border-left:4px solid var(--color-secondary);padding-left:1rem}.questions-list{display:flex;flex-direction:column;gap:1rem}.question-item{padding:1.5rem;border-radius:12px;background:#ffffff08;border:1px solid rgba(255,255,255,.05);transition:transform .2s}.question-item:hover{transform:translate(5px);background:#ffffff12}.question-meta{display:flex;gap:.8rem;margin-bottom:1rem;font-size:.8rem}.subject-tag{background:#00f3ff33;color:var(--color-primary);padding:2px 8px;border-radius:4px}.date-tag{opacity:.5}.question-text{margin-bottom:1rem;font-size:1rem;line-height:1.5}.action-row{display:flex;justify-content:flex-end}.retry-btn{background:transparent;border:1px solid var(--color-primary);color:var(--color-primary);padding:.5rem 1.5rem;border-radius:20px;cursor:pointer;font-size:.9rem;transition:all .2s}.retry-btn:hover{background:var(--color-primary);color:#000}.explanation-box{margin:1rem 0;padding:1rem;background:#0000004d;border-radius:8px;border:1px solid rgba(255,255,255,.1)}.answer-row{margin-bottom:.8rem;color:#4ade80;font-weight:700}.desc-row .label{display:block;margin-bottom:.4rem;opacity:.7;font-size:.9rem}.desc-row .value{margin:0;line-height:1.6;color:#ffffffe6}.text-btn{background:none;border:none;color:#fff9;cursor:pointer;margin-right:1rem;transition:color .2s}.text-btn:hover{color:#fff;text-decoration:underline}.law-reference{margin-top:1rem;padding:.8rem;background:#ffeb3b1a!important;border:1px solid rgba(255,235,59,.3);border-radius:6px}.law-reference .label{color:#ffeb3b;font-size:.9rem;font-weight:700;display:block;margin-bottom:.5rem}.law-content{font-size:.9rem;color:#ddd;line-height:1.5}.law-content strong{color:#fff;display:block;margin-bottom:.3rem}.empty-state{text-align:center;padding:4rem;opacity:.7;font-size:1.2rem}.memo-badge{margin-left:auto;cursor:help}.memo-editor{margin:1rem 0;animation:fadeIn .2s}.memo-textarea{width:100%;min-height:80px;background:#0000004d;border:1px solid rgba(255,255,255,.2);border-radius:8px;color:#fff;padding:.8rem;font-family:inherit;resize:vertical;margin-bottom:.5rem}.memo-textarea:focus{outline:none;border-color:var(--color-primary)}.memo-actions{display:flex;justify-content:flex-end;gap:.5rem}.text-btn.save{color:#4ade80}.text-btn.save:hover{color:#22c55e}.text-btn.cancel{color:#f87171}.text-btn.cancel:hover{color:#ef4444}.memo-display{margin:1rem 0;padding:1rem;background:#ffff001a!important;border:1px dashed rgba(255,255,0,.3);border-radius:8px}.memo-display .label{display:block;font-size:.8rem;color:#fca5a5;margin-bottom:.5rem;font-weight:700}.memo-display p{margin:0;line-height:1.5;white-space:pre-wrap;color:#fef08a}.game-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:radial-gradient(circle at center,#1a2333,#0b1221);padding:2rem}.game-instructions{margin-bottom:1.5rem;padding:1rem 2rem;text-align:center;max-width:600px}.game-instructions h3{color:var(--color-primary);margin-bottom:.5rem}.game-instructions .hint{color:var(--color-secondary);font-size:.9rem;margin-top:.5rem}.canvas-wrapper{position:relative;padding:10px;border-radius:12px;box-shadow:0 0 30px #00000080;overflow:hidden}canvas{display:block;background:#0000004d;border-radius:8px}.game-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#0b1221d9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;animation:fadeIn .5s ease}.game-overlay h2{font-size:3rem;color:var(--color-primary);margin-bottom:1rem}.game-overlay p{font-size:1.2rem;margin-bottom:2rem;color:var(--color-text-muted)}.gravity-status{margin-top:1.5rem;font-weight:700;color:var(--color-primary);background:#00f5d41a;padding:.5rem 1.5rem;border-radius:20px;border:1px solid rgba(0,245,212,.2)}.infinite-orbit-page{min-height:100vh;padding:2rem 5%;background:radial-gradient(circle at top right,#1a2333,#0b1221);display:flex;flex-direction:column;align-items:center}.infinite-nav{width:100%;display:flex;justify-content:flex-start;align-items:center;gap:2rem;margin-bottom:3rem}.infinite-nav .back-button{position:static}.infinite-nav h1{font-size:1.8rem;color:var(--color-primary);text-shadow:0 0 10px rgba(0,245,212,.3)}.orbit-stats{width:100%;max-width:800px;padding:2rem;margin-bottom:3rem;display:flex;align-items:center;gap:3rem}.stat-item{display:flex;flex-direction:column;align-items:center}.stat-value{font-size:3rem;font-weight:800;color:var(--color-secondary)}.stat-label{font-size:.8rem;color:var(--color-text-muted)}.orbit-filters{display:flex;gap:1rem;flex-wrap:wrap}.filter-tab{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);color:var(--color-text-muted);padding:.5rem 1rem;border-radius:20px;cursor:pointer;font-size:.8rem;transition:all .3s ease}.filter-tab.active{background:var(--color-primary);color:var(--color-bg);border-color:var(--color-primary);font-weight:700}.filter-tab:hover:not(.active){background:#ffffff1a;color:#fff}.orbit-description{color:var(--color-text-muted);font-size:1rem;line-height:1.6}.items-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem;width:100%;max-width:1200px}.empty-storage{grid-column:1 / -1;padding:4rem;text-align:center;color:var(--color-text-muted)}.orbit-card{padding:2rem;display:flex;flex-direction:column;justify-content:space-between;min-height:250px}.orbit-card h3{margin:1.5rem 0;font-size:1.1rem;line-height:1.5}.card-header{display:flex;justify-content:space-between;align-items:center}.weight-tag{font-size:.7rem;color:var(--color-secondary);font-weight:700}.card-footer{display:flex;flex-direction:column;gap:1rem}.ans-preview{font-size:.85rem;color:var(--color-primary);background:#00f5d40d;padding:.5rem;border-radius:4px}.cert-tag-small{font-size:.7rem;color:var(--color-text-muted);background:#ffffff1a;padding:.2rem .5rem;border-radius:4px;align-self:flex-start}.review-btn{background:var(--color-primary);color:var(--color-bg);border:none;padding:.6rem;border-radius:8px;font-weight:700;cursor:pointer;transition:all .3s ease}.review-btn:hover{box-shadow:0 0 15px var(--color-primary);transform:translateY(-2px)}.ai-guide-placeholder{width:45px;height:45px;margin:0 10px;flex-shrink:0;display:flex;align-items:center;justify-content:center;position:relative}.ai-guide-widget{position:fixed;top:2rem;right:2rem;width:320px;padding:1.2rem;z-index:1000;background:radial-gradient(circle at 70% 30%,#0b1221fa,#000);border:2px solid rgba(155,93,229,.4);border-radius:20px;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);box-shadow:0 10px 40px #00000080,0 0 20px #9b5de533;transition:all .4s cubic-bezier(.4,0,.2,1);animation:satelliteFloat 6s ease-in-out infinite reverse}.ai-guide-widget.minimized{position:absolute;top:0;right:0;width:45px;height:45px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:50%;overflow:hidden;cursor:pointer;margin:0}.ai-guide-widget.minimized:hover{transform:scale(1.1);box-shadow:0 0 15px #9b5de599}.ai-guide-widget.minimized h3,.ai-guide-widget.minimized .minimize-toggle{display:none}.guide-header{display:flex;justify-content:space-between;align-items:center;cursor:pointer;-webkit-user-select:none;user-select:none}.header-left{display:flex;align-items:center;gap:.8rem}.guide-header.minimized-header{width:100%;height:100%;display:flex;align-items:center;justify-content:center;margin:0}.guide-header.minimized-header .header-left{gap:0}.header-left h3{margin:0;font-size:.95rem;color:#fff;font-weight:600}.minimize-toggle{background:transparent;border:none;color:#fff;font-size:1.2rem;cursor:pointer;padding:4px;display:flex;align-items:center;justify-content:center;transition:transform .3s}.ai-guide-widget:not(.minimized) .minimize-toggle{transform:rotate(180deg)}.ai-icon{font-size:1.2rem;filter:drop-shadow(0 0 5px rgba(155,93,229,.5))}.guide-content{margin-bottom:1.5rem}.guide-msg{font-size:.85rem;color:var(--color-text-muted);line-height:1.4;margin-bottom:1rem}.apply-guide-btn{width:100%;padding:.6rem;background:var(--color-primary);color:var(--color-bg);border:none;border-radius:6px;font-size:.8rem;font-weight:700;cursor:pointer;transition:all .3s ease}.apply-guide-btn:hover{box-shadow:0 0 15px var(--color-primary);transform:scale(1.02)}.timer-display{text-align:center;margin-bottom:1rem}.time-text{font-size:2.5rem;font-weight:800;color:var(--color-primary);font-family:Courier New,monospace;margin-bottom:.5rem}.timer-progress{width:100%;height:6px;background:#ffffff1a;border-radius:3px;overflow:hidden}.progress-bar{height:100%;background:linear-gradient(90deg,var(--color-primary),var(--color-secondary));transition:width 1s linear}.duration-selector{display:flex;gap:.5rem;justify-content:center;margin-top:1rem}.duration-btn{padding:.4rem .8rem;background:#ffffff0d;border:1px solid rgba(255,255,255,.2);border-radius:6px;color:#fff;font-size:.8rem;cursor:pointer;transition:all .2s}.duration-btn.selected{background:var(--color-primary);color:var(--color-bg);border-color:var(--color-primary)}.duration-btn:hover{transform:translateY(-2px)}.timer-controls{display:flex;gap:.5rem}.timer-controls .apply-guide-btn{flex:1}.reset-btn{padding:.6rem;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:6px;color:#fff;font-size:.8rem;cursor:pointer;transition:all .2s}.reset-btn:hover{background:#fff3}.focus-active{border-color:var(--color-secondary);box-shadow:0 0 20px #ff6b6b4d}@keyframes satelliteFloat{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-10px) rotate(-1deg)}}.mode-tabs{display:flex;gap:.5rem;margin:1.2rem 0;justify-content:center}.mode-tab{padding:.5rem;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:8px;font-size:1.2rem;cursor:pointer;transition:all .2s;opacity:.5}.mode-tab.active{opacity:1;background:#ffffff1a;border-color:var(--color-primary);transform:scale(1.1)}.mode-description{text-align:center;padding:.5rem 0}.mode-description p{font-size:.85rem;color:#ffffffb3;margin-bottom:.8rem}.mode-features{display:flex;flex-direction:column;gap:.4rem}.feature{font-size:.8rem;color:var(--color-primary);text-align:left;padding-left:.5rem}.live-player-container{position:fixed;bottom:10%;left:5%;width:280px;background:radial-gradient(circle at 30% 30%,#0b1221f2,#000000fa);border:2px solid rgba(0,245,212,.4);border-radius:20px;overflow:hidden;z-index:999;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);box-shadow:0 0 30px #00f5d44d,0 0 60px #00f5d41a,inset 0 0 20px #00f5d40d;transition:all .5s cubic-bezier(.4,0,.2,1);animation:satelliteFloat 6s ease-in-out infinite;display:flex;flex-direction:column}.live-player-container.embedded{position:relative;bottom:auto;left:auto;width:100%!important;height:100%!important;max-width:none!important;border:none;border-radius:0;z-index:1;animation:none;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}.live-player-container.embedded .video-wrapper{flex:1;height:auto;padding-bottom:0}@keyframes satelliteFloat{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-10px) rotate(2deg)}}.live-player-container:hover{transform:translateY(-5px) scale(1.02);box-shadow:0 0 40px #00f5d480,0 0 80px #00f5d433}.live-player-container.minimized{width:200px;height:auto}.live-player-container:before{content:"";position:absolute;inset:-2px;background:conic-gradient(from 0deg,transparent 0deg,rgba(0,245,212,.3) 90deg,transparent 180deg,rgba(0,245,212,.3) 270deg,transparent 360deg);border-radius:20px;z-index:-1;animation:rotate 8s linear infinite}@keyframes rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.live-player-header{display:flex;justify-content:space-between;align-items:center;padding:.8rem 1rem;background:#00f5d41a;border-bottom:1px solid rgba(0,245,212,.2)}.live-badge{display:flex;align-items:center;gap:.5rem;font-size:.85rem;font-weight:700;color:var(--color-primary)}.live-dot{width:8px;height:8px;background:red;border-radius:50%;animation:pulse 2s infinite}.live-dot.offline{background:#666;animation:none}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.2)}}.offline-content{padding:3rem 2rem;text-align:center;background:#0000004d}.offline-icon{font-size:3rem;margin-bottom:1rem;opacity:.5}.offline-content h3{font-size:1.2rem;color:var(--color-primary);margin-bottom:.5rem}.offline-content p{font-size:.9rem;color:var(--color-text-muted);margin-bottom:1.5rem}.watch-previous-btn{padding:.8rem 1.5rem;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));border:none;border-radius:8px;color:#fff;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .3s}.watch-previous-btn:hover{transform:scale(1.05);box-shadow:0 0 20px var(--color-primary)}.player-controls{display:flex;gap:.5rem}.control-btn{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:6px;padding:.4rem .6rem;font-size:1rem;cursor:pointer;transition:all .2s}.control-btn:hover{background:#fff3;transform:scale(1.1)}.video-wrapper{position:relative;width:100%;padding-bottom:56.25%;transition:opacity .3s}.video-wrapper iframe{position:absolute;top:0;left:0;width:100%;height:100%}.youtube-layer{position:absolute;top:0;left:0;width:100%;height:100%;z-index:0;transition:all .5s ease}.youtube-layer.background-mode iframe{filter:blur(2px) grayscale(30%)}.video-dim-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#0009;z-index:1;pointer-events:none}.automated-layer{position:absolute;top:0;left:0;width:100%;height:100%;z-index:10}.background-mode-control{padding:1rem;display:flex;align-items:center;gap:.8rem;background:#0000004d}.background-mode-control label{font-size:.8rem;color:var(--color-text-muted);white-space:nowrap}.opacity-slider{flex:1;height:4px;background:#fff3;border-radius:2px;outline:none;-webkit-appearance:none;appearance:none}.opacity-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;background:var(--color-primary);border-radius:50%;cursor:pointer}.opacity-slider::-moz-range-thumb{width:14px;height:14px;background:var(--color-primary);border-radius:50%;cursor:pointer;border:none}.background-mode-control span{font-size:.8rem;color:var(--color-primary);font-weight:600;min-width:40px}@media(max-width:768px){.live-player-container{bottom:1rem;left:1rem;right:auto;width:calc(50% - 1.5rem);max-width:280px}.live-player-container.minimized{width:150px}}@media(max-width:480px){.live-player-container{width:calc(100% - 2rem);max-width:300px;left:1rem;bottom:1rem}}.automated-live-container{background:#1a1a1a4d;color:#fff;padding:8px 10px;font-family:Inter,system-ui,-apple-system,sans-serif;display:flex;flex-direction:column;height:100%;position:relative;overflow:hidden;box-sizing:border-box}.player-scroll-content{height:auto;overflow-y:auto;padding-top:5px;padding-bottom:20px;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.2) transparent}.player-scroll-content::-webkit-scrollbar{width:5px}.player-scroll-content::-webkit-scrollbar-thumb{background:#fff3;border-radius:10px}.broadcast-mini-header{display:flex;justify-content:space-between;align-items:center;background:#ffffff0d;padding:8px 12px;border-radius:6px;margin-bottom:12px;border-left:3.5px solid #ffa502}.exam-selector-dropdown{background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:4px;padding:2px 8px;font-size:.85rem;font-weight:500;cursor:pointer;outline:none;transition:all .2s ease}.exam-selector-dropdown:hover{background:#ffffff26;border-color:#ffffff4d}.exam-selector-dropdown option{background:#2d3436;color:#fff}.ai-status{font-size:.75rem;color:#ff4757;font-weight:700;text-transform:uppercase}.pulsing{animation:simple-pulse 1.5s infinite}@keyframes simple-pulse{0%{opacity:1}50%{opacity:.4}to{opacity:1}}.question-card{display:flex;flex-direction:column;gap:4px}.q-number{font-size:1.1rem;font-weight:800;color:#1e90ff}.q-text{font-size:.92rem;line-height:1.45;word-break:keep-all;white-space:pre-wrap;margin-bottom:0}.q-passage{background:#ffffff14;padding:10px 12px;border-radius:8px;border-left:4px solid #1e90ff;font-size:.9rem;line-height:1.6;color:#e9ecef;white-space:pre-wrap;margin:4px 0}.listening-guide{margin-top:2px;padding:10px;background:#ffffff08;border-radius:12px;text-align:center;min-height:70px;display:flex;align-items:center;justify-content:center;border-top:1px solid rgba(255,255,255,.05)}.guide-text{font-size:1.1rem;color:#4facfe;margin:0;font-weight:600}.current-reading-option{background:#1e90ff26;padding:16px 20px;border-radius:16px;border:1px solid rgba(30,144,255,.4);display:flex;gap:16px;align-items:flex-start;width:90%;margin:10px auto;animation:fadeInSlide .4s cubic-bezier(.2,.8,.2,1);text-align:left;box-shadow:0 4px 12px #0003;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-sizing:border-box}.current-reading-option .opt-num{background:linear-gradient(135deg,#1e90ff,#0984e3);color:#fff;width:32px;height:32px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;flex-shrink:0;box-shadow:0 2px 6px #1e90ff66;margin-top:2px}.current-reading-option .opt-val{font-size:1.1rem;line-height:1.6;color:#fff;word-break:break-word;font-weight:500;text-shadow:0 1px 2px rgba(0,0,0,.5)}@keyframes fadeInSlide{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}.question-timer-display{width:100%;margin:0 auto}.timer-countdown{display:flex;flex-direction:column;align-items:center;gap:5px}.timer-label{font-size:.9rem;color:#ccc;font-weight:600}.timer-value{font-size:2.8rem;font-weight:800;color:#ffa502;animation:pulse 1s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.answer-announcement{display:flex;flex-direction:column;align-items:center;gap:10px;width:100%}.answer-text-mini{font-size:1.05rem;color:#2ecc71;font-weight:700;padding:12px;background:#2ecc711a;border-radius:8px;border:1.5px solid rgba(46,204,113,.3);word-break:keep-all;width:90%}.short-card{background:#0b1221cc;border:1px solid rgba(0,245,212,.2);border-radius:12px;overflow:hidden;transition:all .3s ease;position:relative}.short-card:hover{transform:translateY(-5px);border-color:var(--color-primary);box-shadow:0 10px 30px #00f5d433}.short-thumbnail{position:relative;width:100%;padding-bottom:177.78%;overflow:hidden;cursor:pointer;background:#000}.short-thumbnail img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .3s}.short-thumbnail:hover img{transform:scale(1.05)}.play-overlay{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:#0000004d;opacity:0;transition:opacity .3s}.short-thumbnail:hover .play-overlay{opacity:1}.play-icon{font-size:3rem;color:#fff;text-shadow:0 0 10px rgba(0,0,0,.5)}.duration-badge{position:absolute;bottom:.5rem;right:.5rem;background:#000c;color:#fff;padding:.2rem .5rem;border-radius:4px;font-size:.75rem;font-weight:600}.short-info{padding:1rem}.short-title{font-size:.95rem;font-weight:700;color:#fff;margin-bottom:.5rem;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.short-stats{display:flex;gap:1rem;font-size:.8rem;color:var(--color-text-muted);margin-bottom:.5rem}.short-category{display:inline-block;padding:.2rem .6rem;background:#00f5d41a;color:var(--color-primary);border-radius:12px;font-size:.75rem;font-weight:600}.share-btn{width:100%;padding:.8rem;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));border:none;border-radius:0;color:#fff;font-size:.85rem;font-weight:700;cursor:pointer;transition:all .3s}.share-btn:hover{background:linear-gradient(135deg,var(--color-secondary),var(--color-primary))}.share-message{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#00f5d4f2;color:var(--color-bg);padding:1rem 1.5rem;border-radius:8px;font-weight:700;z-index:10;animation:fadeInOut 3s}@keyframes fadeInOut{0%,to{opacity:0}10%,90%{opacity:1}}.share-modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.share-modal{background:#0b1221f2;border:1px solid var(--color-primary);border-radius:16px;padding:2rem;max-width:400px;width:90%;animation:slideUp .3s}@keyframes slideUp{0%{transform:translateY(50px);opacity:0}to{transform:translateY(0);opacity:1}}.share-modal h3{color:var(--color-primary);margin-bottom:1.5rem;text-align:center}.share-options{display:flex;flex-direction:column;gap:.8rem;margin-bottom:1rem}.share-options button{padding:1rem;background:#ffffff0d;border:1px solid rgba(255,255,255,.2);border-radius:8px;color:#fff;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s}.share-options button:hover{background:#00f5d41a;border-color:var(--color-primary);transform:translate(5px)}.share-hint{text-align:center;font-size:.85rem;color:var(--color-text-muted);margin-bottom:1rem}.close-modal{width:100%;padding:.8rem;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:8px;color:#fff;cursor:pointer;transition:all .2s}.close-modal:hover{background:#fff3}.shorts-gallery-container{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1000;overflow-y:auto;padding:20px 15px;background:radial-gradient(circle at center,#1a2333,#0b1221);box-sizing:border-box}.back-button{display:inline-block;margin-bottom:20px;background:none;border:1px solid rgba(255,255,255,.2);color:#fff;padding:.5rem 1rem;border-radius:8px;cursor:pointer;transition:all .3s ease}.back-button:hover{background:#ffffff1a;border-color:var(--color-primary)}.gallery-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;flex-wrap:wrap;gap:1rem}.gallery-header h1{font-size:2rem;color:var(--color-primary)}.points-display{display:flex;align-items:center;gap:.5rem;padding:.8rem 1.5rem;background:#0b1221cc;border:1px solid var(--color-primary);border-radius:12px}.points-icon{font-size:1.5rem}.points-value{font-size:1.5rem;font-weight:800;color:var(--color-primary)}.points-label{font-size:.9rem;color:var(--color-text-muted)}.category-filter{display:flex;gap:1rem;margin-bottom:2rem;flex-wrap:wrap}.category-btn{padding:.6rem 1.5rem;background:#ffffff0d;border:1px solid rgba(255,255,255,.2);border-radius:20px;color:#fff;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s}.category-btn:hover{background:#ffffff1a;transform:translateY(-2px)}.category-btn.active{background:var(--color-primary);border-color:var(--color-primary);color:var(--color-bg)}.shorts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.5rem;margin-bottom:3rem}.top-section{margin-bottom:3rem}.top-section h2{font-size:1.5rem;color:var(--color-primary);margin-bottom:1.5rem}.top-list{display:flex;flex-direction:column;gap:.8rem}.top-item{display:flex;align-items:center;gap:1rem;padding:1rem;background:#0b122199;border:1px solid rgba(255,255,255,.1);border-radius:8px;transition:all .2s}.top-item:hover{border-color:var(--color-primary);transform:translate(5px)}.rank{font-size:1.5rem;font-weight:800;color:var(--color-primary);min-width:40px}.top-info{flex:1}.top-info h4{font-size:.95rem;color:#fff;margin-bottom:.3rem}.top-stats{font-size:.8rem;color:var(--color-text-muted)}.watch-top-btn{padding:.5rem 1rem;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));border:none;border-radius:6px;color:#fff;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s}.watch-top-btn:hover{transform:scale(1.05);box-shadow:0 0 15px var(--color-primary)}.point-info{padding:1.5rem;background:#0b1221cc;border:1px solid rgba(255,235,59,.3);border-radius:12px;max-width:600px;margin:0 auto}.point-info h3{color:#ffeb3b;margin-bottom:1rem}.point-info ul{list-style:none;padding:0;margin-bottom:1rem}.point-info li{padding:.5rem 0;color:#fff;font-size:.95rem}.point-info strong{color:var(--color-primary)}.point-hint{font-size:.85rem;color:var(--color-text-muted);margin:0}@media(max-width:768px){.shorts-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem}.gallery-header h1{font-size:1.5rem}.top-item{flex-direction:column;text-align:center}.rank{min-width:auto}}.login-manager{display:flex;align-items:center}.login-btn{display:flex;align-items:center;gap:10px;background:#ffffff0d;color:#fff;border:1px solid rgba(255,255,255,.1);padding:8px 16px;border-radius:12px;font-weight:600;font-size:.9rem;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.login-btn:hover{background:#ffffff1a;border-color:var(--color-primary);transform:translateY(-2px);box-shadow:0 4px 15px #00f5d433}.google-icon{background:#4285f4;color:#fff;width:20px;height:20px;display:flex;align-items:center;justify-content:center;border-radius:50%;font-size:.7rem;font-weight:700}.user-profile{display:flex;align-items:center;gap:12px;background:#ffffff1a;padding:6px 12px;border-radius:30px;border:1px solid rgba(255,255,255,.2)}.user-avatar{width:32px;height:32px;border-radius:50%;border:2px solid #00f3ff}.user-info{display:flex;flex-direction:column;align-items:flex-start}.user-name{font-size:.85rem;font-weight:500;color:#fff}.logout-btn{background:transparent;border:none;color:#ff4757;font-size:.75rem;padding:0;cursor:pointer;text-decoration:underline}.logout-btn:hover{color:#ff6b81}.mobile-app-frame{width:100vw;height:100vh;max-width:450px;max-height:900px;margin:0 auto;background:#000;border:8px solid #1a1a1a;border-radius:40px;position:relative;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 50px 100px #00000080}.mobile-status-bar{height:44px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 20px;font-size:.8rem;color:#fff;background:#000;z-index:10}.mobile-status-bar .time{justify-self:start;font-weight:600}.mobile-status-bar .icons{justify-self:end;display:flex;gap:5px}.status-bar-logo{display:flex;align-items:center;gap:6px;font-weight:700;font-size:.9rem;letter-spacing:-.5px;opacity:.9}.status-bar-logo img{height:24px;width:auto}.mobile-top-area{width:100%;height:50%;background:#000;position:relative;z-index:5;border-bottom:2px solid rgba(0,245,212,.3)}.mobile-bottom-area{flex:1;overflow:hidden;position:relative;background:var(--color-bg)}.scroll-content{height:100%;overflow-y:auto;padding-bottom:40px}.scroll-content::-webkit-scrollbar{width:4px}.scroll-content::-webkit-scrollbar-track{background:transparent}.scroll-content::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:10px}.mobile-home-indicator{position:absolute;bottom:8px;left:50%;transform:translate(-50%);width:140px;height:5px;background:#ffffff4d;border-radius:10px;z-index:10}@media(min-width:450px){body{background:radial-gradient(circle at center,#1a2333,#0b1221);display:flex;justify-content:center;align-items:center;min-height:100vh}}.point-toast-container{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:10px;pointer-events:none}.point-toast{background:#0b1221f2;border:2px solid #f9d423;border-radius:12px;padding:12px 20px;display:flex;align-items:center;gap:12px;box-shadow:0 10px 30px #00000080;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:toastSlideIn .3s cubic-bezier(.175,.885,.32,1.275) forwards}.toast-icon{font-size:1.5rem;filter:drop-shadow(0 0 5px rgba(249,212,35,.5))}.toast-content{display:flex;flex-direction:column}.toast-amount{font-size:1.1rem;font-weight:800;color:#f9d423}.toast-reason{font-size:.75rem;color:#fff9}@keyframes toastSlideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.point-toast.fade-out{animation:toastFadeOut .5s ease-in forwards}@keyframes toastFadeOut{to{transform:translateY(-20px);opacity:0}}.live-answer-container{height:100%;display:flex;flex-direction:column;padding:20px;background:#0a0a14e6;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);color:#fff;overflow-y:auto;gap:15px}.live-answer-container.loading{justify-content:center;align-items:center;text-align:center}.live-sync-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:5px}.live-indicator{display:flex;align-items:center;gap:8px;font-size:.9rem;color:#ff4d4d;font-weight:700}.live-indicator .dot{width:8px;height:8px;background-color:#ff4d4d;border-radius:50%}.pulse{animation:pulse-red 1.5s infinite}@keyframes pulse-red{0%{transform:scale(.95);box-shadow:0 0 #ff4d4db3}70%{transform:scale(1.1);box-shadow:0 0 0 10px #ff4d4d00}to{transform:scale(.95);box-shadow:0 0 #ff4d4d00}}.live-user-stats{display:flex;gap:10px;align-items:center}.stat-badge{padding:4px 10px;border-radius:20px;font-size:.8rem;font-weight:700;display:flex;align-items:center;gap:4px;animation:popIn .3s cubic-bezier(.175,.885,.32,1.275)}.stat-badge.points{background:#f9d42333;color:#f9d423;border:1px solid rgba(249,212,35,.3)}.stat-badge.streak{background:#ff4d4d33;color:#ff4d4d;border:1px solid rgba(255,77,77,.3)}@keyframes popIn{0%{transform:scale(.5);opacity:0}to{transform:scale(1);opacity:1}}.live-question-status{display:flex;justify-content:space-between;align-items:center;background:#ffffff0d;padding:12px 18px;border-radius:12px;border:1px solid rgba(255,255,255,.1)}.q-info{font-weight:600;color:#4facfe;font-size:.9rem}.live-timer{font-size:.9rem;font-weight:600}.timer-val{color:#ff4d4d;font-size:1.2rem;margin-left:5px}.next-q-timer{font-size:.8rem;opacity:.8;margin-left:8px;font-weight:400}.live-question-body{background:#0000004d;padding:12px 15px;border-radius:12px;border-left:4px solid #4facfe;margin-bottom:5px}.q-text{font-size:1rem;line-height:1.5;margin-bottom:5px;font-weight:500;word-break:keep-all}.live-options-preview{display:flex;flex-direction:column;gap:8px;font-size:.95rem;color:#ffffffe6}.opt-item-preview .label{color:#4facfe;font-weight:700;margin-right:8px}.answer-section{text-align:center;background:#ffffff08;padding:12px 15px;border-radius:16px;margin-top:auto}.answer-guide{font-size:.85rem;color:#ffffff80;margin-bottom:8px;transition:all .3s ease}.result-header{font-size:1.5rem!important;font-weight:800;margin-bottom:5px;animation:resultPop .4s cubic-bezier(.175,.885,.32,1.275)}.result-header.correct{color:#00f2fe;text-shadow:0 0 15px rgba(0,242,254,.4)}.result-header.wrong{color:#ff4d4d}.guide-correct{font-size:.95rem!important;color:#fff!important;font-weight:600;opacity:1!important;background:#00f2fe1a;padding:6px 12px;border-radius:8px;margin-top:5px;display:inline-block}.guide-wrong{font-size:.95rem!important;color:#fcc!important;font-weight:600;opacity:1!important}@keyframes resultPop{0%{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}.live-options-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.live-opt-btn{aspect-ratio:1;background:#ffffff14;border:2px solid rgba(255,255,255,.1);border-radius:50%;color:#fff;font-size:1.4rem;font-weight:700;cursor:pointer;transition:all .2s cubic-bezier(.175,.885,.32,1.275);display:flex;align-items:center;justify-content:center}.live-opt-btn:hover:not(:disabled){background:#4facfe33;border-color:#4facfe}.live-opt-btn.selected{background:#4facfe;border-color:#4facfe;transform:scale(1.1);box-shadow:0 0 15px #4facfe80}.live-opt-btn:disabled{cursor:default;opacity:.6}.live-opt-btn.disabled-reading{background:#0006;border-color:#ffffff0d;filter:grayscale(.8);opacity:.4;cursor:not-allowed}.correct-flash{background:#00f2fe!important;animation:flash-green .5s infinite}.wrong-flash{background:#ff4d4d!important;animation:flash-red .5s infinite}@keyframes flash-green{0%,to{opacity:1}50%{opacity:.6}}@keyframes flash-red{0%,to{opacity:1}50%{opacity:.6}}.submission-feedback{padding:15px;border-radius:12px;text-align:center;font-weight:700;margin-top:10px;animation:slideInUp .3s ease-out}.submission-feedback.correct{background:#00f2fe26;color:#4facfe;border:1px solid rgba(79,172,254,.3)}.submission-feedback.wrong{background:#ff4d4d26;color:#ff4949;border:1px solid rgba(255,73,73,.3)}@keyframes slideInUp{0%{transform:translateY(15px);opacity:0}to{transform:translateY(0);opacity:1}}.live-participation-info{font-size:.8rem;text-align:center;color:#fff6;margin-top:5px;padding-bottom:10px}.tip{color:#f9d423;font-weight:600}.youtube-reference{display:flex;align-items:center;gap:15px;background:linear-gradient(135deg,#ff00001a,#ff00000d);padding:15px 20px;border-radius:12px;border:2px solid rgba(255,0,0,.3);margin-bottom:15px}.youtube-icon{font-size:2.5rem;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.reference-text strong{display:block;font-size:1.1rem;color:red;margin-bottom:5px}.reference-text p{font-size:.85rem;color:#ffffffb3;margin:0}.current-question-info{background:#ffffff0d;padding:15px;border-radius:10px;margin-bottom:15px}.q-number-badge{display:inline-block;background:#4facfe;color:#fff;padding:4px 12px;border-radius:20px;font-size:.85rem;font-weight:700;margin-bottom:10px}.q-preview{font-size:.95rem;line-height:1.5;color:#fffc;word-break:keep-all}.answer-revealed-box{background:linear-gradient(135deg,#00f2fe26,#4facfe1a);border:2px solid rgba(79,172,254,.4);border-radius:12px;padding:15px;margin-top:15px;animation:slideInUp .4s ease-out}.reveal-title{font-size:1.1rem;font-weight:700;color:#4facfe;margin-bottom:10px}.correct-answer-num{font-size:1.3rem;font-weight:700;color:#00f2fe;margin-bottom:8px}.correct-option-detail{font-size:.9rem;color:#ffffffe6;padding:10px;background:#0003;border-radius:8px;line-height:1.4}.youtube-watch-guide{background:linear-gradient(135deg,#ff000026,#ff00000d);border:3px solid rgba(255,0,0,.4);border-radius:16px;padding:30px;text-align:center;margin-bottom:20px}.guide-content{display:flex;flex-direction:column;align-items:center;gap:15px}.guide-content .guide-icon{font-size:4rem;animation:float 3s ease-in-out infinite}.guide-content h2{font-size:1.5rem;color:red;margin:0;font-weight:700}.guide-content p{font-size:1rem;color:#fffc;margin:0}.options-display-section{background:#ffffff0d;border:1px solid rgba(79,172,254,.3);border-radius:12px;padding:12px 15px;margin-bottom:10px}.options-title{font-size:1rem;color:#4facfe;margin:0 0 10px;font-weight:700;text-align:center}.options-text-list{display:flex;flex-direction:column;gap:8px}.option-text-item{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;background:#0000004d;border-radius:8px;border:1.5px solid transparent;transition:all .3s ease}.option-text-item.is-correct{background:#2ecc7133;border-color:#2ecc71;animation:pulse-green 1s ease-in-out}@keyframes pulse-green{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}.option-number{font-size:1.1rem;font-weight:700;color:#4facfe;min-width:25px}.option-content{flex:1;font-size:1rem;line-height:1.5;color:#ffffffe6;word-break:keep-all}.correct-badge{background:#2ecc71;color:#fff;padding:4px 10px;border-radius:12px;font-size:.85rem;font-weight:700;white-space:nowrap}.watch-mode-panel{flex:1;display:flex;align-items:center;justify-content:center;padding:40px 20px}.watch-mode-message{text-align:center;max-width:400px}.watch-icon{font-size:4rem;margin-bottom:20px;animation:float 3s ease-in-out infinite}.watch-mode-message h3{font-size:1.5rem;color:#fff;margin-bottom:10px}.watch-mode-message p{font-size:1rem;color:#ffffffb3;margin-bottom:30px}.switch-to-interactive-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:15px 30px;border-radius:12px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #667eea66}.switch-to-interactive-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #667eea99}.switch-to-watch-btn{background:#ffffff1a;color:#fff;border:2px solid rgba(255,255,255,.3);padding:8px 16px;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .3s ease;margin-top:15px}.switch-to-watch-btn:hover{background:#fff3;border-color:#ffffff80}.ai-hint-badge{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,#522d9266,#2d0c5a99);border:1px solid rgba(138,79,255,.5);color:#d4bbff;padding:2px 8px;border-radius:12px;font-size:.75rem;font-weight:600;margin-left:8px;box-shadow:0 0 10px #8a4fff33}.ai-quick-explanation{margin-top:10px;padding:12px;background:#8a4fff1a;border-left:3px solid #b388ff;border-radius:0 8px 8px 0;font-size:.95rem;color:#e0d4fc;line-height:1.5;animation:fadeIn .5s ease-out}.ai-suggestion-title{font-size:.8rem;color:#b388ff;font-weight:700;margin-bottom:4px;display:flex;align-items:center;gap:6px}.option-hint-text{display:block;font-size:.8rem;color:#fff9;margin-top:5px;font-style:italic;padding-left:20px;position:relative;animation:slideInUp .3s ease-out}.option-hint-text:before{content:"💡";position:absolute;left:0;top:0;font-size:.8rem;opacity:.7}.anti-gravity-float{animation:float 4s ease-in-out infinite}.leaderboard-container{padding:20px;background:#ffffff0d;border-radius:20px;border:1px solid rgba(255,255,255,.1);margin:20px 0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.leaderboard-title{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700;margin-bottom:20px;color:#4facfe}.leaderboard-list{display:flex;flex-direction:column;gap:12px}.leaderboard-item{display:flex;align-items:center;padding:12px 16px;background:#ffffff08;border-radius:12px;transition:transform .2s}.leaderboard-item:hover{transform:translate(5px);background:#ffffff14}.leaderboard-item.top-1{border-left:4px solid #f9d423}.leaderboard-item.top-2{border-left:4px solid #c0c0c0}.leaderboard-item.top-3{border-left:4px solid #cd7f32}.rank-num{width:30px;font-weight:800;font-size:1.1rem;color:#ffffff80}.leaderboard-item.top-1 .rank-num{color:#f9d423}.leaderboard-item.top-2 .rank-num{color:silver}.leaderboard-item.top-3 .rank-num{color:#cd7f32}.user-name{flex:1;font-weight:500;font-size:.95rem}.user-points{font-weight:700;color:#4facfe;font-size:1rem}.pts-label{font-size:.7rem;color:#fff6;margin-left:4px}.leaderboard-empty{text-align:center;padding:20px;color:#fff6;font-style:italic}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.leaderboard-item{animation:fadeIn .4s ease-out forwards}.app-container{width:100%;min-height:100vh;padding-bottom:5rem}.landing-page{padding:0 5%}.navbar{height:80px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.05)}.app-header{display:flex;align-items:center;justify-content:center;padding:1rem 0;gap:.8rem;margin-bottom:1rem}.app-logo-icon{width:42px;height:42px;filter:drop-shadow(0 0 10px rgba(56,189,248,.4));animation:floatLogo 6s ease-in-out infinite}@keyframes floatLogo{0%,to{transform:translateY(0)}50%{transform:translateY(-3px)}}.app-logo-text{font-size:1.6rem;font-weight:800;background:linear-gradient(135deg,#fff,#cbd5e1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.5px;font-family:Inter,sans-serif}.logo-img{height:50px;width:auto;max-width:300px;object-fit:contain;object-position:left;filter:drop-shadow(0 0 5px rgba(0,245,212,.4));display:block}.nav-links{display:flex;align-items:center;gap:2rem}.nav-links span{color:var(--color-text-muted);cursor:pointer;transition:color .3s}.nav-links span:hover{color:#fff}.auth-btn{background:var(--color-secondary);color:#fff;border:none;padding:.6rem 1.5rem;border-radius:50px;font-weight:600;cursor:pointer}.hero-section{display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;min-height:calc(100vh - 80px);gap:2rem;position:relative;z-index:1}.hero-content{display:flex;flex-direction:column;align-items:center}.footer{padding:3rem 0;text-align:center;color:var(--color-text-muted);font-size:.9rem;border-top:1px solid rgba(255,255,255,.05)}.certification-select-page{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem;background:radial-gradient(circle at center,#1a2333,#0b1221);position:relative}.certification-select-page h2{font-size:2.5rem;margin-bottom:3rem;text-align:center}.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;max-width:1000px;width:100%}.cert-card{padding:3rem 2rem;text-align:center;cursor:pointer;transition:all .3s cubic-bezier(.175,.885,.32,1.275);border:1px solid rgba(255,255,255,.1)}.cert-card:hover{border-color:var(--color-primary);transform:translateY(-10px) scale(1.05);box-shadow:0 10px 30px #00f5d433}.cert-icon{font-size:3rem;margin-bottom:1.5rem;display:block}.mobile-nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 0;margin-bottom:2rem}.intro-title{font-size:2.2rem!important;margin-bottom:.2rem;letter-spacing:-1px;font-weight:900;text-shadow:0 0 30px rgba(0,245,212,.3)}.premium-cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:.8rem;width:100%;max-width:380px;margin-top:1.5rem}.premium-btn{display:flex;align-items:center;gap:1rem;padding:.7rem 1.2rem;background:#ffffff08;border:1px solid rgba(255,255,255,.1);border-radius:12px;color:#fff;cursor:pointer;transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.premium-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:.5s}.premium-btn:hover:before{left:100%}.premium-btn:hover{background:#ffffff14;border-color:var(--color-primary);transform:translateY(-3px) scale(1.02);box-shadow:0 10px 25px #0000004d,0 0 15px #00f5d433}.premium-btn.main-live{grid-column:span 2;background:linear-gradient(135deg,#ffffff0d,#00f5d40d);border-color:#00f5d433;justify-content:center}.premium-btn:not(.main-live){padding:.8rem .5rem;flex-direction:column;gap:.5rem;text-align:center}.premium-btn:not(.main-live) .btn-icon{width:32px;height:32px;font-size:1.2rem;margin:0 auto}.premium-btn:not(.main-live) .btn-label{font-size:.9rem}.btn-icon{font-size:1.4rem;display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:#ffffff0d;border-radius:10px;transition:transform .3s}.premium-btn:hover .btn-icon{transform:scale(1.1) rotate(5deg)}.btn-label{font-size:1rem;font-weight:700;color:#fff}.btn-sub{font-size:.8rem;color:var(--color-text-muted);margin-top:2px}.premium-btn:hover .btn-label{color:var(--color-primary)}.landing-content{padding:0 1.5rem}.cert-card h3{color:#fff;margin-bottom:1rem}.cert-card p{color:var(--color-text-muted);font-size:.9rem}@media(max-width:1024px){.hero-section{grid-template-columns:1fr;text-align:center;padding-top:4rem}.hero-content{display:flex;flex-direction:column;align-items:center}.hero-content h1{font-size:3.5rem}}