@import "https://fonts.googleapis.com/css2?family=Fredoka:wght@300..700&family=Quicksand:wght@300..700&display=swap";:root{--bg-primary:#fffdf6;--bg-card:#fff;--bg-accent:#fef6e4;--color-primary:#ffb830;--color-primary-hover:#ffa41b;--color-secondary:#ff8066;--color-success:#4e9f3d;--color-success-light:#d8f3dc;--color-error:#ff5a5f;--color-error-light:#ffebeb;--color-text-dark:#2f3e46;--color-text-muted:#8e9aaf;--border-radius-sm:12px;--border-radius-md:20px;--border-radius-lg:32px;--shadow-sm:0 4px 12px #ffb83014;--shadow-md:0 12px 24px #2f3e460f;--shadow-lg:0 20px 40px #2f3e461a;--shadow-primary:0 8px 20px #ffb83040;--transition-smooth:all .3s cubic-bezier(.25, .8, .25, 1);--transition-spring:all .4s cubic-bezier(.175, .885, .32, 1.275)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--color-text-dark);min-height:100vh;font-family:Quicksand,sans-serif;line-height:1.6;overflow-x:hidden}h1,h2,h3,h4,h5,h6{color:var(--color-text-dark);font-family:Fredoka,sans-serif;font-weight:600}.app-container{min-height:100vh;display:flex;position:relative}.sidebar{background-color:var(--bg-card);z-index:100;border-right:3px solid #f6f3eb;flex-direction:column;width:260px;height:100vh;padding:32px 16px;display:flex;position:fixed}.brand-section{border-bottom:2px dashed #f6f3eb;align-items:center;gap:12px;margin-bottom:24px;padding:0 16px 32px;display:flex}.brand-logo{background:linear-gradient(135deg, var(--color-primary), var(--color-secondary));width:48px;height:48px;box-shadow:var(--shadow-primary);border-radius:50%;justify-content:center;align-items:center;display:flex}.brand-name{background:linear-gradient(45deg,#ff8066,#ffb830);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:22px;font-weight:700}.nav-links{flex-direction:column;gap:8px;list-style:none;display:flex}.nav-item{border-radius:var(--border-radius-sm);color:var(--color-text-dark);cursor:pointer;transition:var(--transition-spring);border:2px solid #0000;align-items:center;gap:16px;padding:14px 20px;font-size:16px;font-weight:600;text-decoration:none;display:flex}.nav-item:hover{background-color:var(--bg-accent);color:var(--color-primary-hover);transform:translate(4px)}.nav-item.active{background-color:var(--bg-accent);color:var(--color-primary-hover);border-color:var(--color-primary);box-shadow:var(--shadow-sm)}.nav-icon{width:22px;height:22px}.sidebar-footer{background-color:var(--bg-accent);border-radius:var(--border-radius-sm);text-align:center;margin-top:auto;padding:16px;font-size:14px;font-weight:600}.main-content{flex-direction:column;flex:1;min-height:100vh;margin-left:260px;padding:40px;display:flex}@media (width<=900px){.app-container{flex-direction:column}.sidebar{border-bottom:3px solid #f6f3eb;border-right:none;width:100%;height:auto;padding:16px;position:relative}.brand-section{margin-bottom:16px;padding-bottom:16px}.nav-links{flex-flow:wrap;justify-content:space-around}.main-content{margin-left:0;padding:20px}}.cute-card{background-color:var(--bg-card);border-radius:var(--border-radius-md);box-shadow:var(--shadow-md);transition:var(--transition-spring);border:3px solid #f6f3eb;padding:30px}.cute-card:hover{box-shadow:var(--shadow-lg);border-color:#efebe0;transform:translateY(-4px)}.cute-btn{border-radius:var(--border-radius-md);cursor:pointer;transition:var(--transition-spring);border:none;outline:none;justify-content:center;align-items:center;gap:10px;padding:14px 28px;font-family:Fredoka,sans-serif;font-size:16px;font-weight:600;display:inline-flex;transform:translateY(0);box-shadow:0 4px #0000001a}.cute-btn:active{transform:translateY(3px);box-shadow:0 1px #0000001a}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-hover)}.btn-secondary{background-color:var(--color-secondary);color:#fff}.btn-secondary:hover{background-color:#ff6647}.btn-success{background-color:var(--color-success);color:#fff}.btn-success:hover{background-color:#3e8e30}.btn-outline{border:3px solid var(--color-primary);color:var(--color-primary);background-color:#fff;box-shadow:0 4px #ffb83026}.btn-outline:hover{background-color:var(--bg-accent)}.btn-muted{color:var(--color-text-muted);box-shadow:none;background-color:#f2f2f7}.btn-muted:active{transform:none}@keyframes float{0%{transform:translateY(0)rotate(0)}50%{transform:translateY(-8px)rotate(2deg)}to{transform:translateY(0)rotate(0)}}@keyframes pulse-ring{0%{opacity:.8;transform:scale(.95)}50%{opacity:.4;transform:scale(1.05)}to{opacity:.8;transform:scale(.95)}}@keyframes flip-in{0%{opacity:0;transform:rotateY(-90deg)}to{opacity:1;transform:rotateY(0)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.animate-float{animation:4s ease-in-out infinite float}.animate-bounce-hover:hover{animation:.6s ease-in-out infinite bounce}.dashboard-grid{grid-template-columns:2fr 1fr;gap:32px;margin-top:24px;display:grid}@media (width<=1100px){.dashboard-grid{grid-template-columns:1fr}}.srs-map-container{flex-direction:column;gap:16px;display:flex}.level-row{border-radius:var(--border-radius-sm);background-color:#fcfbf7;border:2px solid #f5f1e5;align-items:center;gap:16px;padding:12px 20px;display:flex}.level-badge{color:#fff;border-radius:12px;justify-content:center;align-items:center;width:44px;height:44px;font-family:Fredoka,sans-serif;font-size:20px;font-weight:700;display:flex}.level-0{background-color:#ff5a5f}.level-1,.level-2,.level-1-2{background-color:#ff8066}.level-3,.level-4,.level-5,.level-3-5{background-color:#ffb830}.level-6,.level-7,.level-8,.level-6-8{background-color:#3a86c8}.level-9,.level-10,.level-9-10{background-color:#4e9f3d}.level-info{flex:1}.level-name{font-size:15px;font-weight:700}.level-desc{color:var(--color-text-muted);font-size:12px}.level-count{color:var(--color-text-dark);font-family:Fredoka,sans-serif;font-size:24px;font-weight:700}.decks-section{margin-top:40px}.decks-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;margin-top:20px;display:grid}.deck-card{flex-direction:column;height:100%;display:flex}.deck-icon-wrapper{background-color:var(--bg-accent);width:56px;height:56px;color:var(--color-primary-hover);border:2px solid #fff3d6;border-radius:16px;justify-content:center;align-items:center;margin-bottom:20px;display:flex}.deck-title{margin-bottom:8px;font-size:20px}.deck-description{color:var(--color-text-muted);flex:1;margin-bottom:24px;font-size:14px}.mascot-widget{text-align:center;background:linear-gradient(135deg,#fff9eb,#fff0d1);border-color:#ffe6b3;flex-direction:column;align-items:center;padding:30px;display:flex;position:relative;overflow:hidden}.mascot-container{height:150px;margin-bottom:12px}.golden-time-badge{background-color:var(--color-secondary);color:#fff;border-radius:20px;margin-top:12px;padding:6px 16px;font-family:Fredoka,sans-serif;font-size:14px;font-weight:600;animation:2s infinite pulse-ring;display:inline-block}.stats-summary{justify-content:space-around;width:100%;margin-top:20px;display:flex}.stat-item{flex-direction:column;align-items:center;display:flex}.stat-val{color:var(--color-primary-hover);font-family:Fredoka,sans-serif;font-size:24px;font-weight:700}.stat-lbl{color:var(--color-text-muted);font-size:12px}.flashcard-wrapper{perspective:1000px;cursor:pointer;width:100%;max-width:550px;height:380px;margin:0 auto}.flashcard-inner{text-align:center;width:100%;height:100%;transform-style:preserve-3d;transition:transform .8s cubic-bezier(.175,.885,.32,1.275);position:relative}.flashcard-wrapper.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{backface-visibility:hidden;border-radius:var(--border-radius-lg);width:100%;height:100%;box-shadow:var(--shadow-lg);border:4px solid #f5f1e5;flex-direction:column;justify-content:center;align-items:center;padding:40px;display:flex;position:absolute}.flashcard-front{background-color:var(--bg-card);color:var(--color-text-dark)}.flashcard-back{background-color:var(--bg-accent);color:var(--color-text-dark);transform:rotateY(180deg)}.flashcard-word{color:var(--color-primary-hover);margin-bottom:8px;font-size:42px}.flashcard-ipa{color:var(--color-text-muted);margin-bottom:16px;font-size:18px;font-style:italic}.audio-btn{background-color:var(--bg-accent);width:50px;height:50px;color:var(--color-primary-hover);cursor:pointer;transition:var(--transition-spring);border:2px solid #ffe4a6;border-radius:50%;justify-content:center;align-items:center;display:flex}.audio-btn:hover{background-color:var(--color-primary);color:#fff;transform:scale(1.1)}.flashcard-meaning{color:var(--color-text-dark);margin-bottom:20px;font-size:28px;font-weight:700}.flashcard-example-box{border-radius:var(--border-radius-sm);background-color:#fff;border:2px dashed #e0dbcf;max-width:90%;margin-top:10px;padding:16px}.flashcard-example{color:var(--color-text-dark);font-size:15px;font-weight:600}.flashcard-example-vn{color:var(--color-text-muted);margin-top:6px;font-size:13px}.practice-container{flex-direction:column;gap:24px;width:100%;max-width:600px;margin:0 auto;display:flex}.progress-bar-container{background-color:#efebe0;border-radius:6px;width:100%;height:12px;position:relative;overflow:hidden}.progress-bar-fill{background:linear-gradient(90deg, var(--color-primary), var(--color-secondary));height:100%;transition:width .4s ease-out}.options-grid{grid-template-columns:1fr;gap:14px;display:grid}.option-btn{border-radius:var(--border-radius-sm);text-align:left;cursor:pointer;transition:var(--transition-spring);background-color:#fff;border:3px solid #efebe0;align-items:center;gap:16px;padding:18px;font-size:16px;font-weight:600;display:flex}.option-btn:hover{border-color:var(--color-primary);background-color:var(--bg-accent)}.option-index{width:30px;height:30px;color:var(--color-text-muted);background-color:#f2f2f7;border-radius:50%;justify-content:center;align-items:center;font-weight:700;display:flex}.option-btn:hover .option-index{background-color:var(--color-primary);color:#fff}.option-btn.correct{border-color:var(--color-success);background-color:var(--color-success-light);color:var(--color-success)}.option-btn.correct .option-index{background-color:var(--color-success);color:#fff}.option-btn.incorrect{border-color:var(--color-error);background-color:var(--color-error-light);color:var(--color-error)}.option-btn.incorrect .option-index{background-color:var(--color-error);color:#fff}.scrambled-letters{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:16px;display:flex}.letter-btn{width:48px;height:48px;color:var(--color-text-dark);cursor:pointer;transition:var(--transition-spring);background-color:#fff;border:3px solid #efebe0;border-radius:12px;justify-content:center;align-items:center;font-family:Fredoka,sans-serif;font-size:20px;font-weight:700;display:flex;box-shadow:0 3px #0000000d}.letter-btn:hover:not(:disabled){border-color:var(--color-primary);background-color:var(--bg-accent);transform:translateY(-2px)}.letter-btn:active:not(:disabled){transform:translateY(1px)}.letter-btn:disabled{opacity:.3;cursor:not-allowed;background-color:#f2f2f7}.answer-slots{justify-content:center;gap:8px;min-height:52px;margin-bottom:24px;display:flex}.slot-tile{border-bottom:4px solid var(--color-text-muted);width:48px;height:48px;color:var(--color-primary-hover);cursor:pointer;justify-content:center;align-items:center;font-family:Fredoka,sans-serif;font-size:22px;font-weight:700;display:flex}.slot-tile.filled{border:3px solid var(--color-primary);background-color:var(--bg-accent);border-bottom-width:3px;border-radius:12px}.dictation-input-container{flex-direction:column;align-items:center;gap:16px;display:flex}.text-input-cute{border-radius:var(--border-radius-sm);text-align:center;width:100%;max-width:360px;transition:var(--transition-spring);border:3px solid #efebe0;outline:none;padding:16px 20px;font-family:Fredoka,sans-serif;font-size:20px}.text-input-cute:focus{border-color:var(--color-primary);box-shadow:var(--shadow-sm)}.notebook-toolbar{flex-wrap:wrap;justify-content:space-between;gap:20px;margin-bottom:30px;display:flex}.search-wrapper{flex:1;min-width:250px;position:relative}.search-input{border-radius:var(--border-radius-sm);width:100%;transition:var(--transition-spring);border:3px solid #f6f3eb;outline:none;font-size:15px;padding:14px 20px 14px 48px!important}.search-input:focus{border-color:var(--color-primary)}.search-icon{color:var(--color-text-muted);position:absolute;top:50%;left:16px;transform:translateY(-50%)}.filter-group{flex-wrap:wrap;gap:8px;display:flex}.filter-btn{cursor:pointer;transition:var(--transition-smooth);background-color:#fff;border:2px solid #f6f3eb;border-radius:30px;padding:10px 16px;font-size:14px;font-weight:600}.filter-btn:hover{border-color:var(--color-primary);background-color:var(--bg-accent)}.filter-btn.active{background-color:var(--color-primary);color:#fff;border-color:var(--color-primary)}.words-table-container{overflow-x:auto}.words-table{border-collapse:collapse;text-align:left;width:100%}.words-table th{color:var(--color-text-muted);border-bottom:3px solid #f6f3eb;padding:16px;font-weight:700}.words-table td{border-bottom:1px solid #f6f3eb;padding:16px}.word-cell{color:var(--color-primary-hover);font-size:18px;font-weight:700}.settings-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background-color:#2f3e4666;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.settings-modal{border-radius:var(--border-radius-md);border:4px solid var(--color-primary);background-color:#fff;width:90%;max-width:450px;padding:30px;animation:.4s ease-out flip-in;position:relative}.modal-close{cursor:pointer;color:var(--color-text-muted);background:0 0;border:none;position:absolute;top:16px;right:16px}.settings-row{justify-content:space-between;align-items:center;margin:20px 0;display:flex}.switch{width:52px;height:28px;display:inline-block;position:relative}.switch input{opacity:0;width:0;height:0}.slider{cursor:pointer;background-color:#efebe0;border-radius:34px;transition:all .4s;position:absolute;inset:0}.slider:before{content:"";background-color:#fff;border-radius:50%;width:20px;height:20px;transition:all .4s;position:absolute;bottom:4px;left:4px}input:checked+.slider{background-color:var(--color-primary)}input:checked+.slider:before{transform:translate(24px)}#confetti-canvas{pointer-events:none;z-index:999;width:100%;height:100%;position:fixed;top:0;left:0}@keyframes slideIn{0%{opacity:0;transform:translateY(100px)scale(.9)}to{opacity:1;transform:translateY(0)scale(1)}}