:root{--bg-main:#030307;--bg-surface:#090911;--bg-surface-elevated:#111120;--border-color:#ffffff14;--border-color-subtle:#ffffff0a;--primary:#6366f1;--primary-dark:#4f46e5;--primary-glow:#6366f12e;--primary-glow-strong:#6366f159;--accent-pink:#ec4899;--accent-cyan:#06b6d4;--accent-violet:#8b5cf6;--color-1:#f472b6;--color-2:#60a5fa;--color-3:#34d399;--color-4:#fbbf24;--color-5:#a78bfa;--color-6:#fb923c;--color-7:#22d3ee;--color-8:#f87171;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--font-sans:"Inter", "Cairo", -apple-system, sans-serif;--font-display:"Outfit", "Cairo", -apple-system, sans-serif;--font-lyric:"Fraunces", Georgia, serif;--font-mono:"JetBrains Mono", monospace;--bottom-nav-height:0px;--player-height:96px;--player-padding:0px 32px;--bottom-spacing:calc(var(--bottom-nav-height) + var(--player-height));--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--radius-2xl:24px;--radius-full:9999px;--text-xs:.75rem;--text-sm:.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.563rem;--text-3xl:1.953rem;--text-4xl:2.441rem;--weight-normal:400;--weight-medium:500;--weight-semibold:600;--weight-bold:700;--space-0:0;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--color-success:#10b981;--color-success-bg:#10b98114;--color-success-border:#10b98126;--color-error:#ef4444;--color-error-bg:#ef444414;--color-error-border:#ef444426;--color-warning:#f59e0b;--color-warning-bg:#f59e0b14;--color-warning-border:#f59e0b26;--color-info:#3b82f6;--color-info-bg:#3b82f614;--color-info-border:#3b82f626;--shadow-sm:0 2px 8px #0000004d;--shadow-md:0 8px 24px #0006;--shadow-lg:0 16px 40px #00000080;--shadow-xl:0 24px 50px #0009;--shadow-glow:0 4px 20px var(--primary-glow);--shadow-glow-strong:0 8px 30px var(--primary-glow-strong);--ease-out:cubic-bezier(.16, 1, .3, 1);--ease-in-out:cubic-bezier(.4, 0, .2, 1);--ease-spring:cubic-bezier(.34, 1.56, .64, 1);--duration-fast:.15s;--duration-normal:.24s;--duration-slow:.35s;--z-base:1;--z-dropdown:10;--z-sticky:20;--z-overlay:40;--z-modal:50;--z-panel:60;--z-toast:100}html{scroll-behavior:smooth}*{box-sizing:border-box;margin:0;padding:0}@property --dynamic-color-1{syntax:"<color>";inherits:false;initial-value:#6366f126}@property --dynamic-color-2{syntax:"<color>";inherits:false;initial-value:#ec48991a}body{background-color:var(--bg-main);background-image:radial-gradient(circle at 10% 10%, var(--dynamic-color-1) 0%, transparent 45%), radial-gradient(circle at 90% 90%, var(--dynamic-color-2) 0%, transparent 45%), radial-gradient(circle at 45% 65%, #8b5cf60f 0%, transparent 50%), radial-gradient(#ffffff04 1px, transparent 0), radial-gradient(#ffffff02 1px, transparent 0);color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-position:0 0,0 0,0 0,0 0,20px 20px;background-size:100% 100%,100% 100%,100% 100%,40px 40px,40px 40px;background-attachment:fixed;min-height:100vh;line-height:1.5;transition:--dynamic-color-1 2s,--dynamic-color-2 2s;position:relative;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:600;line-height:1.2}a{color:inherit;text-decoration:none}button{cursor:pointer;background:0 0;border:none;outline:none;font-family:inherit}.ambient-glow{filter:blur(140px);opacity:.15;pointer-events:none;z-index:0;mix-blend-mode:screen;will-change:transform;border-radius:50%;position:fixed}.ambient-glow--1{background:radial-gradient(circle, var(--primary) 0%, transparent 80%);width:50vw;height:50vw;animation:25s ease-in-out infinite alternate float-ambient;top:-10%;left:-10%}.ambient-glow--2{background:radial-gradient(circle, var(--accent-pink) 0%, transparent 80%);width:60vw;height:60vw;animation:35s ease-in-out infinite alternate-reverse float-ambient;bottom:-10%;right:-10%}.ambient-glow--3{background:radial-gradient(circle, var(--accent-cyan) 0%, transparent 80%);width:45vw;height:45vw;animation:30s ease-in-out infinite alternate float-ambient;top:40%;left:50%}@keyframes float-ambient{0%{transform:translate(0)scale(1)}to{transform:translate(8%,8%)scale(1.08)}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{border:2px solid var(--bg-main);border-radius:var(--radius-full);background:#ffffff0d}::-webkit-scrollbar-thumb:hover{background:#ffffff26}.glass-panel{-webkit-backdrop-filter:blur(24px);background:#0e0e16a6;border:1px solid #ffffff14;box-shadow:0 16px 40px #0006,inset 0 1px #ffffff0d}.mango-button{background:linear-gradient(135deg, var(--primary) 0%, var(--accent-pink) 100%);color:#fff;border-radius:var(--radius-full);transition:all var(--duration-normal) var(--ease-spring);cursor:pointer;justify-content:center;align-items:center;gap:var(--space-2);border:1px solid #ffffff14;padding:.7rem 1.6rem;font-weight:600;display:inline-flex;position:relative;overflow:hidden;box-shadow:0 4px 14px #6366f140,inset 0 1px #ffffff1a}.mango-button:hover{border-color:#ffffff26;transform:translateY(-2px);box-shadow:0 8px 24px #d946ef66,inset 0 1px #ffffff26}.mango-button:active{transform:scale(.96)translateY(0)}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}.flex-center{justify-content:center;align-items:center;display:flex}.text-gradient{background:linear-gradient(135deg,#a5b4fc 0%,#6366f1 50%,#ec4899 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideInRight{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes pulseGlow{0%,to{box-shadow:0 0 15px var(--primary-glow)}50%{box-shadow:0 0 30px var(--primary-glow-strong)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes progressFill{0%{width:0}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes confettiBurst{0%{opacity:1;transform:scale(0)rotate(0)}50%{opacity:.8;transform:scale(1.2)rotate(180deg)}to{opacity:0;transform:scale(0)rotate(360deg)}}@keyframes ripple{0%{opacity:.5;transform:scale(0)}to{opacity:0;transform:scale(4)}}@keyframes gradientShift{0%{background-position:0%}50%{background-position:100%}to{background-position:0%}}@keyframes typewriter{0%{width:0}to{width:100%}}.animate-in{opacity:0;animation:.5s cubic-bezier(.16,1,.3,1) forwards fadeInUp}.animate-fade{opacity:0;animation:.4s forwards fadeIn}.animate-slide-right{opacity:0;animation:.4s cubic-bezier(.16,1,.3,1) forwards slideInRight}.animate-scale{opacity:0;animation:.35s cubic-bezier(.16,1,.3,1) forwards scaleIn}.delay-1{animation-delay:50ms}.delay-2{animation-delay:.1s}.delay-3{animation-delay:.15s}.delay-4{animation-delay:.2s}.delay-5{animation-delay:.25s}.delay-6{animation-delay:.3s}.delay-7{animation-delay:.35s}.delay-8{animation-delay:.4s}.delay-9{animation-delay:.45s}.delay-10{animation-delay:.5s}.skeleton{background:linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-surface-elevated) 50%, var(--bg-surface) 75%);border-radius:var(--radius-md);background-size:200% 100%;animation:1.5s ease-in-out infinite shimmer}.skeleton-text{border-radius:4px;height:14px;margin-bottom:8px}.skeleton-title{border-radius:4px;width:60%;height:22px;margin-bottom:12px}.skeleton-card{border-radius:var(--radius-lg);height:320px}.card-hover{will-change:transform;transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s,border-color .3s}.card-hover:hover{box-shadow:0 20px 40px #00000080, 0 0 0 1px var(--primary-glow);transform:translateY(-6px)scale(1.01);border-color:var(--primary-glow-strong)!important}.lyrics-scroll-container{flex-direction:column;align-items:center;gap:.75rem;width:100%;height:100%;padding:12vh 2rem 22vh;display:flex;overflow-y:auto;-webkit-mask-image:linear-gradient(#0000 0%,#000 15% 85%,#0000 100%);mask-image:linear-gradient(#0000 0%,#000 15% 85%,#0000 100%)}.lyric-line-container{text-align:center;border-radius:var(--radius-lg);cursor:pointer;opacity:.55;width:100%;transition:all var(--duration-normal) var(--ease-out);background-color:#0000;border:1px solid #0000;flex-direction:column;align-items:center;gap:.3rem;padding:.6rem 1.5rem;display:flex;position:relative;overflow:hidden}.lyric-line-container:hover{opacity:.95;background-color:#ffffff08;border-color:#ffffff0f}.lyric-line-container.lyric-active{padding:1.25rem 2rem;animation:3s ease-in-out infinite pulseGlow;transform:scale(1.03);opacity:1!important;background:linear-gradient(135deg,#6366f11f 0%,#d946ef0f 100%)!important;border:1px solid #6366f133!important;box-shadow:0 12px 32px #0003,inset 0 1px #ffffff0d!important}.lyric-line-spanish{font-weight:400;line-height:1.5;font-family:var(--font-display);color:var(--text-primary);z-index:1;transition:all var(--duration-normal) var(--ease-out);font-size:1.5rem}.lyric-active .lyric-line-spanish{text-shadow:0 0 20px #6366f14d;font-size:1.85rem;font-weight:700}.lyric-line-english{color:var(--text-muted);z-index:1;transition:all var(--duration-normal) var(--ease-out);font-size:1.05rem;line-height:1.5}.lyric-active .lyric-line-english{color:var(--text-secondary);font-size:1.18rem}.spin{animation:1s linear infinite spin}:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}.progress-fill{animation:.8s cubic-bezier(.16,1,.3,1) forwards progressFill}.gradient-bg{background:linear-gradient(-45deg,#06060b,#1a0f08,#0b0614,#06060b) 0 0/400% 400%;animation:15s infinite gradientShift}.nav-active-glow{position:relative}.app-header__nav-item{border-radius:var(--radius-full);color:var(--text-secondary);transition:all var(--duration-fast) var(--ease-out);background-color:#0000;border:1px solid #0000;align-items:center;gap:.5rem;padding:.45rem 1.15rem;font-size:.92rem;font-weight:500;text-decoration:none;display:flex}.app-header__nav-item:hover{color:var(--text-primary);background-color:#ffffff08;border-color:#ffffff0d}.app-header__nav-item:active{transform:scale(.96)}.app-header__nav-item.nav-active-glow{color:var(--text-primary);background-color:#6366f11a;border-color:#6366f140;font-weight:600;box-shadow:0 0 15px #6366f10f,inset 0 1px #ffffff0d}@media (width<=768px){.container{padding:1rem!important}h2{font-size:2rem!important}h3{font-size:1.5rem!important}.lyrics-scroll-container{gap:.35rem!important;padding:15vh 1rem!important}.lyric-line-container{gap:.25rem!important;padding:.85rem 1.25rem!important}.lyric-line-spanish{font-size:1.15rem!important}.lyric-active .lyric-line-spanish{font-size:1.35rem!important}.lyric-line-english{font-size:.85rem!important}.lyric-active .lyric-line-english{font-size:.95rem!important}.desktop-only-sidebar{display:none!important}}@media (width<=480px){h2{font-size:1.7rem!important}}.tutor-markdown{text-align:right;color:#fffffff2;direction:rtl;font-size:.95rem;line-height:1.6}.tutor-markdown p{margin-bottom:.75rem}.tutor-markdown p:last-child{margin-bottom:0}.tutor-markdown h1,.tutor-markdown h2,.tutor-markdown h3{color:#ff9f43;margin-top:1.25rem;margin-bottom:.5rem;font-size:1.05rem;font-weight:600}.tutor-markdown ul,.tutor-markdown ol{margin-bottom:.75rem;padding-right:1.25rem}.tutor-markdown li{margin-bottom:.35rem}.tutor-markdown strong{color:#fff;font-weight:600}.tutor-markdown hr{border:0;border-top:1px solid #ffffff14;margin:1rem 0}.tutor-markdown code{font-family:var(--font-mono);color:#ff7675;background-color:#ffffff14;border-radius:6px;padding:.15rem .35rem;font-size:.85rem}.tutor-markdown pre{background-color:#0000004d;border:1px solid #ffffff14;border-radius:12px;margin:.75rem 0;padding:.75rem;overflow-x:auto}.tutor-markdown pre code{color:#fff;background-color:#0000;border-radius:0;padding:0;font-size:.85rem}.mango-input{width:100%;padding:var(--space-3) var(--space-4);font-size:var(--text-base);font-family:var(--font-sans);color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:border-color var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal) var(--ease-out), background-color var(--duration-normal) var(--ease-out);background-color:#00000073;outline:none;box-shadow:inset 0 2px 4px #00000040}.mango-input:focus{border-color:var(--primary);box-shadow:inset 0 2px 4px #00000040, 0 0 0 3px var(--primary-glow), 0 0 15px #6366f114;background-color:#0009}.mango-input::placeholder{color:var(--text-muted);opacity:.85}.mango-input--lg{padding:var(--space-4) var(--space-5);font-size:var(--text-lg);border-radius:var(--radius-lg)}.mango-input--center{text-align:center;font-weight:var(--weight-bold);color:var(--primary);border-color:var(--primary)}.mango-textarea{width:100%;min-height:80px;padding:var(--space-4);font-size:var(--text-base);font-family:var(--font-sans);color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);resize:vertical;transition:border-color var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal) var(--ease-out), background-color var(--duration-normal) var(--ease-out);background-color:#00000073;outline:none;line-height:1.5;box-shadow:inset 0 2px 4px #00000040}.mango-textarea:focus{border-color:var(--primary);box-shadow:inset 0 2px 4px #00000040, 0 0 0 3px var(--primary-glow), 0 0 15px #6366f114;background-color:#0009}.mango-button--ghost{color:var(--text-primary);border-radius:var(--radius-full);font-weight:var(--weight-semibold);transition:all var(--duration-normal) var(--ease-spring);box-shadow:none;background:#ffffff05;border:1px solid #ffffff14;padding:.65rem 1.5rem}.mango-button--ghost:hover{background:#ffffff0f;border-color:#ffffff26;transform:translateY(-2px);box-shadow:none!important}.mango-button--ghost:active{transform:scale(.96)translateY(0)}.mango-button--danger{background:linear-gradient(135deg, var(--color-error) 0%, #dc2626 100%);color:#fff;border-radius:var(--radius-full);font-weight:var(--weight-semibold);transition:all var(--duration-normal) var(--ease-spring);border:1px solid #ffffff14;padding:.7rem 1.6rem;box-shadow:0 4px 14px #ef444440}.mango-button--danger:hover{transform:translateY(-2px);box-shadow:0 8px 24px #ef444466}.mango-button--danger:active{transform:scale(.96)translateY(0)}.mango-button--success{background:linear-gradient(135deg, var(--color-success) 0%, #059669 100%);color:#fff;border-radius:var(--radius-full);font-weight:var(--weight-semibold);transition:all var(--duration-normal) var(--ease-spring);border:1px solid #ffffff14;padding:.7rem 1.6rem;box-shadow:0 4px 14px #10b98140}.mango-button--success:hover{transform:translateY(-2px);box-shadow:0 8px 24px #10b98166}.mango-button--success:active{transform:scale(.96)translateY(0)}.mango-button--sm{padding:var(--space-2) var(--space-4);font-size:var(--text-sm)}.mango-button--lg{padding:var(--space-4) var(--space-8);font-size:var(--text-lg)}.mango-button--block{justify-content:center;align-items:center;gap:var(--space-2);width:100%;display:flex}.mango-button:disabled,.mango-button--ghost:disabled,.mango-button--danger:disabled,.mango-button--success:disabled{opacity:.45;cursor:not-allowed;pointer-events:none;transform:none!important}.icon-button{background:var(--bg-surface);border:1px solid var(--border-color);width:40px;height:40px;color:var(--text-secondary);cursor:pointer;transition:transform var(--duration-normal) var(--ease-out), background-color var(--duration-normal) var(--ease-out), border-color var(--duration-normal) var(--ease-out), color var(--duration-normal) var(--ease-out);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.icon-button:hover{background:var(--bg-surface-elevated);color:var(--text-primary);border-color:#ffffff26}.icon-button:active{transform:scale(.96)}.icon-button--sm{width:32px;height:32px}.icon-button--lg{width:48px;height:48px}.icon-button--primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-glow);border-color:#0000}.icon-button--primary:hover{box-shadow:var(--shadow-glow-strong);filter:brightness(1.1)}.icon-button--ghost{color:var(--text-muted);background:0 0;border-color:#ffffff14}.icon-button--ghost:hover{color:var(--primary);background:#ffffff0d;border-color:#ffffff1f}.badge{align-items:center;gap:var(--space-1);padding:var(--space-1) var(--space-3);font-size:var(--text-xs);font-weight:var(--weight-semibold);text-transform:uppercase;letter-spacing:.06em;border-radius:var(--radius-full);white-space:nowrap;border:1px solid;line-height:1.4;display:inline-flex}.badge--primary{background:var(--primary-glow);color:var(--primary);border-color:var(--primary-glow)}.badge--success{background:var(--color-success-bg);color:var(--color-success);border-color:var(--color-success-border)}.badge--error{background:var(--color-error-bg);color:var(--color-error);border-color:var(--color-error-border)}.badge--warning{background:var(--color-warning-bg);color:var(--color-warning);border-color:var(--color-warning-border)}.badge--info{background:var(--color-info-bg);color:var(--color-info);border-color:var(--color-info-border)}.badge--neutral{color:var(--text-secondary);background:#ffffff0d;border-color:#ffffff1a}.badge--lg{font-size:var(--text-sm);padding:var(--space-2) var(--space-4)}.card{-webkit-backdrop-filter:blur(24px);transition:all var(--duration-normal) var(--ease-spring);background:#0d0d1966;border:1px solid #ffffff0d;position:relative;overflow:hidden;box-shadow:0 12px 40px #0006;border-radius:var(--radius-2xl)!important}.card:before{content:"";pointer-events:none;z-index:2;background:linear-gradient(90deg,#0000,#ffffff0a,#0000);width:100%;height:100%;transition:all .75s;position:absolute;top:0;left:-50%;transform:skew(-25deg)}.card:hover:before{left:150%}.card--interactive{cursor:pointer;will-change:transform}.card--interactive:hover{transform:translateY(-8px)scale(1.015);box-shadow:0 24px 48px #0009,0 0 30px #6366f126;border-color:#6366f159!important}.card--interactive:active{transform:scale(.97)translateY(-2px)}.card img{transition:transform .6s var(--ease-out)!important}.card:hover img{transform:scale(1.08)rotate(1deg)!important}.song-card-title-hover{cursor:pointer}.song-card-title-hover:hover{color:var(--primary)!important}.card--glass{-webkit-backdrop-filter:blur(24px);box-shadow:var(--shadow-lg), inset 0 1px 0 #ffffff0d;background:#090911a6;border:1px solid #ffffff14}.card--elevated{border:1px solid var(--border-color);background:#14142380}.card__body{padding:var(--space-5)}.card__body--lg{padding:var(--space-8)}.phase-label{align-items:center;gap:var(--space-1);padding:var(--space-1) var(--space-3);font-size:var(--text-xs);font-weight:var(--weight-bold);text-transform:uppercase;letter-spacing:.06em;color:var(--primary);margin-bottom:var(--space-4);display:inline-flex}.separator{border:0;border-top:1px solid var(--border-color-subtle);margin:var(--space-6) 0}.separator--tight{margin:var(--space-4) 0}.progress-bar{background:var(--bg-surface-elevated);border-radius:3px;width:100%;height:6px;overflow:hidden}.progress-bar__fill{background:linear-gradient(90deg, var(--primary), var(--color-4));height:100%;transition:width var(--duration-slow) var(--ease-out);border-radius:3px}.progress-bar--lg{border-radius:5px;height:10px}.progress-bar--lg .progress-bar__fill{border-radius:5px}.feedback-box{padding:var(--space-4) var(--space-5);border-radius:var(--radius-lg);margin-top:var(--space-4);border:1px solid}.feedback-box--correct{background:var(--color-success-bg);border-color:var(--color-success-border);color:var(--color-success)}.feedback-box--incorrect{background:var(--color-error-bg);border-color:var(--color-error-border);color:var(--color-error)}.drill-option{width:100%;padding:var(--space-4);border-radius:var(--radius-xl);color:var(--text-primary);font-size:var(--text-lg);text-align:left;cursor:pointer;transition:all var(--duration-normal) var(--ease-spring);background:#ffffff05;border:1px solid #ffffff0d}.drill-option:hover:not(:disabled){background:#ffffff0a;border-color:#6366f14d;transform:translateY(-3px);box-shadow:0 8px 24px #6366f10d}.drill-option--correct{background:var(--color-success-bg)!important;border-color:var(--color-success)!important;color:var(--color-success)!important;box-shadow:0 0 20px #10b98126!important}.drill-option--incorrect{background:var(--color-error-bg)!important;border-color:var(--color-error)!important;color:var(--color-error)!important;box-shadow:0 0 20px #ef444426!important}.drill-option:disabled{cursor:default}.review-grade-btn{align-items:center;gap:var(--space-1);padding:var(--space-3) var(--space-4);border-radius:var(--radius-xl);font-weight:var(--weight-semibold);font-size:var(--text-sm);cursor:pointer;transition:all var(--duration-normal) var(--ease-spring);border:1px solid #ffffff0d;flex-direction:column;flex:1;display:flex}.review-grade-btn:hover{transform:translateY(-3px);box-shadow:0 8px 24px #0003}.review-grade-btn:active{transform:translateY(-1px)}.review-grade-btn--again{background:var(--color-error-bg);color:var(--color-error);border-color:var(--color-error-border)}.review-grade-btn--again:hover{border-color:var(--color-error);background:#ef44441f}.review-grade-btn--hard{background:var(--color-warning-bg);color:var(--color-warning);border-color:var(--color-warning-border)}.review-grade-btn--hard:hover{border-color:var(--color-warning);background:#f59e0b1f}.review-grade-btn--good{background:var(--color-success-bg);color:var(--color-success);border-color:var(--color-success-border)}.review-grade-btn--good:hover{border-color:var(--color-success);background:#10b9811f}.review-grade-btn--easy{background:var(--color-info-bg);color:var(--color-info);border-color:var(--color-info-border)}.review-grade-btn--easy:hover{border-color:var(--color-info);background:#3b82f61f}.review-grade-btn__interval{font-size:var(--text-xs);opacity:.7}.app-header{padding:0 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solid var(--border-color);z-index:101;width:400px;max-width:100vw;padding:var(--space-8);flex-direction:column;display:flex;position:fixed;top:0;bottom:0;right:0;overflow-y:auto}.mobile-only-add-btn{display:none!important}.app-main-content{height:calc(100dvh - 65px - var(--bottom-nav-height));transition:height .3s var(--ease-out);position:relative;overflow-y:auto}.app-main-content.has-active-player{padding-bottom:var(--player-height)}.mini-player{border-top:1px solid #ffffff14!important;box-shadow:0 -8px 24px #00000080!important}.mobile-tab-bar{-webkit-backdrop-filter:blur(24px)saturate(180%);height:64px;z-index:var(--z-sticky);background-color:#03030799;border-top:1px solid #ffffff0d;justify-content:space-around;align-items:center;transition:transform .4s cubic-bezier(.16,1,.3,1),opacity .4s cubic-bezier(.16,1,.3,1);display:none;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -8px 32px #00000080}.mobile-tab-bar__item{color:var(--text-secondary);width:25%;transition:color .25s var(--ease-in-out);flex-direction:column;align-items:center;gap:4px;padding:6px 0;font-size:.75rem;font-weight:500;text-decoration:none;display:flex}.mobile-tab-bar__item--active{color:var(--primary)}.mobile-tab-bar__icon-wrapper{justify-content:center;align-items:center;width:44px;height:28px;display:flex;position:relative}.mobile-tab-bar__icon-container{z-index:2;justify-content:center;align-items:center;display:flex}.mobile-tab-bar__active-glow{background-color:var(--primary-glow);border-radius:var(--radius-full);z-index:1;position:absolute;inset:0}.mobile-tab-bar__label{letter-spacing:.02em;font-size:.72rem;font-weight:600}.music-player-container{-webkit-backdrop-filter:blur(32px)saturate(210%);border-radius:var(--radius-xl);z-index:100;background-color:#09091173;border:1px solid #ffffff14;flex-direction:row;align-items:center;max-width:1200px;margin:0 auto;transition:all .3s cubic-bezier(.25,1,.5,1);display:flex;position:fixed;bottom:1.5rem;left:1.5rem;right:1.5rem;overflow:visible;box-shadow:0 24px 50px #000000a6,0 0 40px #6366f10d,inset 0 1px #ffffff14;direction:ltr!important}.player-glow-wrapper{border-radius:var(--radius-xl);z-index:-1;pointer-events:none;position:absolute;inset:0;overflow:visible}.player-ambient-glow{filter:blur(48px)saturate(220%)opacity(.35);border-radius:var(--radius-xl);pointer-events:none;z-index:-1;background-position:50%;background-size:cover;position:absolute;inset:-15px}.player-ambient-glow.fallback-glow{background:radial-gradient(circle, var(--primary) 0%, var(--accent-pink) 50%, var(--accent-cyan) 100%);filter:blur(60px)opacity(.2)}.player-ambient-glow.is-pulsing{animation:6s ease-in-out infinite alternate glow-pulse-new}@keyframes glow-pulse-new{0%{opacity:.3;transform:scale(1)}to{opacity:.45;transform:scale(1.05)}}.player-inner{z-index:2;align-items:center;gap:1.5rem;width:100%;height:100%;padding:.5rem 1.25rem;display:flex}.player-song-info{cursor:pointer;flex:1.2;align-items:center;gap:1rem;min-width:0;display:flex}.player-album-sleeve-wrapper{cursor:pointer;flex-shrink:0;justify-content:center;align-items:center;width:54px;height:54px;margin-left:-.75rem;margin-right:1.25rem;display:flex;position:relative}.player-vinyl-sleeve{border-radius:var(--radius-md);z-index:5;background:#111120;border:1px solid #ffffff0f;width:100%;height:100%;transition:transform .3s cubic-bezier(.25,1,.5,1);position:relative;overflow:hidden;box-shadow:0 8px 16px #0006,inset 0 1px #ffffff1a}.player-album-sleeve-wrapper:hover .player-vinyl-sleeve{transform:scale(1.05)translateY(-2px)}.player-sleeve-cover-img{object-fit:cover;width:100%;height:100%}.player-vinyl-record{z-index:2;background:#09090d;border-radius:50%;width:48px;height:48px;transition:transform .4s cubic-bezier(.25,1,.5,1);position:absolute;top:3px;left:3px;transform:translate(0);box-shadow:0 4px 10px #0006}.player-vinyl-record.is-playing{transition:transform .6s cubic-bezier(.34,1.56,.64,1);animation:12s linear .3s infinite spin-record;transform:translate(20px)rotate(360deg)}@keyframes spin-record{0%{transform:translate(20px)rotate(0)}to{transform:translate(20px)rotate(360deg)}}.player-vinyl-grooves{pointer-events:none;z-index:3;background:repeating-radial-gradient(circle,#ffffff09 0 1px,#0000 1px 3px);border-radius:50%;position:absolute;inset:0}.player-vinyl-grooves:after{content:"";z-index:4;background:conic-gradient(#0000 0deg,#ffffff0a 45deg,#0000 90deg 180deg,#ffffff0a 225deg,#0000 270deg);border-radius:50%;position:absolute;inset:0}.player-vinyl-center-label{object-fit:cover;z-index:2;border:1px solid #0009;border-radius:50%;width:44%;height:44%;position:absolute;inset:28%}.player-vinyl-center-hole{background-color:var(--bg-surface,#090911);z-index:5;border:1px solid #fff3;border-radius:50%;width:6px;height:6px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.player-song-meta{flex-direction:column;min-width:0;display:flex}.player-song-title-container{align-items:center;gap:.5rem;width:100%;display:flex;position:relative;overflow:visible}.player-song-title{font-weight:var(--weight-semibold);color:var(--text-primary);font-size:var(--text-sm);white-space:nowrap;text-overflow:ellipsis;max-width:180px;font-family:var(--font-display);letter-spacing:-.01em;overflow:hidden}.mini-visualizer{flex-shrink:0;align-items:flex-end;gap:2px;width:16px;height:12px;display:flex}.mini-visualizer__bar{background-color:var(--primary);border-radius:var(--radius-full);transform-origin:bottom;width:2px;height:100%;transition:height .3s,background-color .3s}.mini-visualizer.is-playing .mini-visualizer__bar{animation:.8s ease-in-out infinite alternate visualizer-bounce}.mini-visualizer.is-playing .mini-visualizer__bar:first-child{background-color:var(--primary);animation-duration:.5s}.mini-visualizer.is-playing .mini-visualizer__bar:nth-child(2){background-color:var(--accent-pink);animation-duration:.7s}.mini-visualizer.is-playing .mini-visualizer__bar:nth-child(3){background-color:var(--accent-cyan);animation-duration:.6s}.mini-visualizer.is-playing .mini-visualizer__bar:nth-child(4){background-color:var(--accent-violet);animation-duration:.4s}.mini-visualizer.is-paused .mini-visualizer__bar{background-color:var(--text-muted);height:2px!important}@keyframes visualizer-bounce{0%{transform:scaleY(.15)}to{transform:scaleY(1)}}.player-song-artist{font-size:var(--text-xs);color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;max-width:180px;margin-top:2px;overflow:hidden}.player-controls{flex-direction:column;flex:2;align-items:center;gap:.5rem;min-width:0;display:flex}.player-controls-buttons{align-items:center;gap:1.25rem;display:flex}.player-control-btn{color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-full);background:0 0;border:none;justify-content:center;align-items:center;padding:6px;transition:all .2s;display:flex}.player-control-btn:hover:not(:disabled){color:#fff;background-color:#ffffff0d}.player-play-btn{border-radius:var(--radius-full);cursor:pointer;justify-content:center;align-items:center;width:40px;height:40px;display:flex;color:#030307!important;background-color:#fff!important;border:none!important;transition:all .25s cubic-bezier(.34,1.56,.64,1)!important;box-shadow:0 4px 12px #00000040,inset 0 1px #fff6!important}.player-play-btn:hover{transform:scale(1.08);box-shadow:0 6px 16px #fff3,inset 0 1px #fff6!important}.player-play-btn:active{transform:scale(.94)}.player-progress-container{align-items:center;gap:.75rem;width:100%;max-width:520px;display:flex}.player-time-label{font-size:var(--text-xs);color:var(--text-secondary);font-family:var(--font-mono);text-align:center;min-width:36px}.player-progress-slider{cursor:pointer;flex:1;align-items:center;height:16px;display:flex;position:relative}.player-progress-bar-bg{border-radius:var(--radius-full);pointer-events:none;background-color:#ffffff14;width:100%;height:4px;transition:height .2s,background-color .2s;position:relative}.player-progress-slider:hover .player-progress-bar-bg{background-color:#ffffff1f;height:6px}.player-progress-bar-fill{background:linear-gradient(90deg, var(--primary) 0%, var(--accent-pink) 50%, var(--accent-cyan) 100%);border-radius:var(--radius-full);position:absolute;top:0;bottom:0;left:0}.player-progress-dot{border-radius:var(--radius-full);width:12px;height:12px;box-shadow:0 2px 8px #0006, 0 0 6px var(--primary);z-index:5;background-color:#fff;transition:left .1s linear,transform .2s cubic-bezier(.34,1.56,.64,1);position:absolute;top:50%;transform:translate(-50%,-50%)scale(0)}.player-progress-slider:hover .player-progress-dot{transform:translate(-50%,-50%)scale(1)}.player-progress-tooltip{-webkit-backdrop-filter:blur(12px);color:var(--text-primary);border-radius:var(--radius-sm);font-size:var(--text-xs);font-family:var(--font-mono);pointer-events:none;white-space:nowrap;z-index:20;background:#090911d9;border:1px solid #ffffff1a;padding:4px 8px;position:absolute;bottom:calc(100% + 4px);transform:translate(-50%);box-shadow:0 4px 12px #0000004d}.player-progress-tooltip:after{content:"";border:4px solid 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.player-volume-fill{background-color:#fff}.mobile-expanded-player__volume-wrapper .player-volume-dot{background-color:#fff;width:10px;height:10px;box-shadow:0 1px 3px #0006}.mobile-expanded-player__controls-group{flex-direction:column;align-items:center;width:100%;margin-top:auto;display:flex}.mobile-expanded-player__settings-backdrop{z-index:1008;background:0 0;position:fixed;inset:0}.mobile-expanded-player__settings-menu{-webkit-backdrop-filter:blur(24px)saturate(180%);z-index:1009;background:#141423d9;border:1px solid #ffffff14;border-radius:20px;flex-direction:column;width:200px;padding:8px;display:flex;position:absolute;top:70px;right:24px;box-shadow:0 15px 35px #0009,0 0 1px #ffffff40}.mobile-expanded-player__settings-item{color:#ffffffd9;cursor:pointer;text-align:left;background:0 0;border:none;border-radius:12px;align-items:center;gap:12px;width:100%;padding:10px 14px;font-size:.9rem;font-weight:500;transition:all .2s;display:flex}.mobile-expanded-player__settings-item:hover{color:#fff;background:#ffffff14}.mobile-expanded-player__settings-item:active{transform:scale(.98)}.mobile-expanded-player__settings-item:disabled{opacity:.4;cursor:not-allowed}.mobile-expanded-player__settings-divider{background:#ffffff14;height:1px;margin:6px 0}.mobile-expanded-player__settings-item--danger{color:#ef4444}.mobile-expanded-player__settings-item--danger:hover{color:#fca5a5;background:#ef44441f}.tutor-panel-header{background-color:#0000;border-bottom:1px solid #ffffff0f;flex-shrink:0;justify-content:space-between;align-items:center;padding:1.15rem 1.5rem;display:flex}.breakdown-panel-header{border-bottom:1px solid #ffffff14;flex-shrink:0;justify-content:space-between;align-items:center;margin-bottom:1.25rem;padding-bottom:.75rem;display:flex}.tutor-chat-input-area{background-color:#0000;border-top:1px solid #ffffff0f;flex-shrink:0;padding:.75rem 1.25rem 1.25rem}.tutor-chat-quick-actions-wrap{margin-bottom:.75rem}.tutor-chat-input-container{background-color:#ffffff08;border:1px solid #ffffff14;border-radius:24px;align-items:flex-end;padding:.25rem;transition:border-color .2s ease-in-out,background-color .2s ease-in-out;display:flex;position:relative;box-shadow:0 4px 20px #00000026}.tutor-chat-input-container:focus-within{background-color:#ffffff0d;border-color:#6366f166}.tutor-chat-textarea{width:100%;color:var(--text-primary);resize:none;background:0 0;border:none;outline:none;flex:1;min-height:38px;max-height:120px;padding:.65rem 1rem;font-family:inherit;font-size:.925rem;line-height:1.4}.tutor-quick-actions-container{scrollbar-width:none;-webkit-overflow-scrolling:touch;gap:.5rem;padding-top:.25rem;padding-bottom:.25rem;display:flex;overflow-x:auto;-webkit-mask-image:linear-gradient(270deg,#0000 0%,#000 6% 94%,#0000 100%);mask-image:linear-gradient(270deg,#0000 0%,#000 6% 94%,#0000 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#ffffff1a;border-radius:24px;flex-direction:column;width:385px;height:calc(100vh - 120px);max-height:800px;transition:border-color .3s;display:flex;position:absolute;bottom:1.5rem;right:1.5rem;overflow:hidden;box-shadow:0 30px 60px #0006,inset 0 1px #ffffff0f}.mango-orb-container{justify-content:center;align-items:center;width:34px;height:34px;display:flex;position:relative;overflow:visible}.mango-orb-bg{filter:blur(6px);opacity:.6;background:linear-gradient(135deg,#ff9f43,#ec4899,#6366f1);border-radius:50%;width:100%;height:100%;animation:4s ease-in-out infinite alternate orb-pulse;position:absolute}.mango-orb-core{background:linear-gradient(135deg,#ffb300,#ff4081,#7c4dff);border-radius:50%;width:24px;height:24px;animation:10s linear infinite orb-rotate;position:relative;box-shadow:inset 0 2px 4px #fff6,0 0 12px #ff408180}@keyframes orb-pulse{0%{opacity:.5;filter:blur(4px);transform:scale(.9)}to{opacity:.8;filter:blur(8px);transform:scale(1.2)}}@keyframes orb-rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.typing-indicator{align-items:center;gap:4px;height:24px;padding:8px 12px;display:flex}.typing-dot{background-color:#fff9;border-radius:50%;width:6px;height:6px;animation:1.4s ease-in-out infinite both typing-bounce}.typing-dot:first-child{animation-delay:-.32s}.typing-dot:nth-child(2){animation-delay:-.16s}@keyframes typing-bounce{0%,80%,to{opacity:.4;transform:scale(.6)}40%{opacity:1;transform:scale(1)}}.save-explanation-pill{color:var(--text-secondary);cursor:pointer;background-color:#ffffff0a;border:1px solid #ffffff0f;border-radius:9999px;align-items:center;gap:.35rem;margin-top:.5rem;padding:.35rem .75rem;font-size:.75rem;font-weight:500;transition:all .2s 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#ffffff0d;flex-direction:column;gap:1.5rem;padding-top:1.5rem;display:flex}.breakdown-mastery-actions{gap:var(--space-4);margin-top:var(--space-6);padding-top:var(--space-6);border-top:1px solid var(--border-color-subtle);display:flex}.tutor-breakdown-panel__drag-handle{cursor:pointer;z-index:10;-webkit-user-select:none;user-select:none;justify-content:center;align-items:center;width:100%;padding:10px 0 2px;display:none}.tutor-breakdown-panel__drag-line{background-color:#ffffff40;border-radius:99px;width:36px;height:5px;transition:background-color .2s,transform .2s}.tutor-breakdown-panel__drag-handle:hover .tutor-breakdown-panel__drag-line{background-color:#ffffff73;transform:scaleX(1.05)}.grammar-grid{margin-bottom:var(--space-8);grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem;display:grid}.vocab-header-actions{margin-bottom:var(--space-8);justify-content:space-between;align-items:flex-start;gap:var(--space-6);display:flex}.library-header{justify-content:space-between;align-items:flex-end;gap:1.5rem;margin-bottom:2.25rem;display:flex}.library-header-main{flex-direction:column;display:flex}.library-title{font-size:2.4rem;font-family:var(--font-display);margin:0 0 .5rem;font-weight:700}.library-subtitle{color:var(--text-secondary);max-width:500px;margin:0;font-size:1.05rem}.library-sort-container{align-items:center;margin-bottom:.25rem;display:flex}.library-sort-trigger:hover{border-color:#fff3!important;box-shadow:0 4px 15px #0000004d!important}.library-sort-item{width:100%!important;color:var(--text-secondary)!important;text-align:left!important;cursor:pointer!important;background:0 0!important;border:none!important;border-radius:8px!important;justify-content:space-between!important;align-items:center!important;padding:8px 14px!important;font-size:.82rem!important;font-weight:500!important;transition:all .2s!important;display:flex!important}.library-sort-item:hover{color:var(--text-primary)!important;background-color:#ffffff0d!important}@media (width<=768px){.library-header{flex-direction:column!important;align-items:flex-start!important;gap:1rem!important;margin-bottom:2rem!important}.library-sort-container{width:100%!important}.library-sort-trigger{justify-content:space-between!important;width:100%!important}.library-sort-popover{width:100%!important}.stats-divider-dot{display:none!important}.library-subtitle-wrapper{flex-direction:column!important;align-items:flex-start!important;gap:.5rem!important}}.song-card--dragging{opacity:.25!important;box-shadow:none!important;scale:.95!important}.song-card--drag-over{border-color:var(--primary)!important;box-shadow:0 0 15px var(--primary-glow-strong)!important;transform:scale(1.02)translateY(-2px)!important}.song-card--dropped{z-index:10!important;box-shadow:0 10px 30px #0006!important}@media (width<=768px){:root{--bottom-nav-height:64px;--player-height:72px;--player-padding:0px 16px}.app-header__logo-text{font-size:var(--text-lg)}.mobile-only-add-btn{display:flex!important}.music-player-container{bottom:calc(var(--bottom-nav-height) + 10px)!important;width:auto!important;height:var(--player-height)!important;padding:var(--player-padding)!important;border-radius:var(--radius-lg)!important;border:1px solid var(--border-color)!important;margin:0!important;left:10px!important;right:10px!important;transform:none!important;box-shadow:0 8px 30px #00000080!important}.music-player-container.is-expanded-mobile{z-index:9999!important;border:none!important;border-radius:0!important;width:100vw!important;height:100dvh!important;max-height:100dvh!important;margin:0!important;padding:0!important;position:fixed!important;inset:0!important}.player-album-sleeve-wrapper{width:44px!important;height:44px!important;margin-right:0!important}.player-vinyl-sleeve{width:44px!important;height:44px!important}.player-vinyl-record,.player-badge{display:none!important}.player-song-title-container{max-width:170px!important}.player-song-title{max-width:140px!important;font-size:.85rem!important}.player-song-artist{font-size:.72rem!important}.player-song-info{flex:3!important}.player-controls{flex:2!important;justify-content:center!important;align-items:flex-end!important;gap:0!important}.player-controls-buttons{gap:.9rem!important}.player-play-btn{width:38px!important;height:38px!important}.player-extra{display:none!important}.player-inner .player-progress-container{z-index:10!important;width:100%!important;max-width:100%!important;height:3px!important;padding:0!important;position:absolute!important;top:0!important;left:0!important;right:0!important}.player-inner .player-progress-slider{height:3px!important;padding:0!important}.player-inner .player-progress-bar-bg{background-color:#ffffff0f!important;border-radius:0!important;height:3px!important}.player-inner .player-progress-bar-fill{border-radius:0!important}.player-inner .player-progress-dot,.player-inner .player-time-label{display:none!important}.mobile-tab-bar{display:flex!important}.song-page-header{border-bottom:1px solid #ffffff0d!important;flex-direction:row!important;justify-content:space-between!important;align-items:center!important;gap:.5rem!important;padding:.6rem .85rem!important;display:flex!important}.song-page-meta-container{align-self:auto!important;align-items:center!important;gap:.6rem!important;min-width:0!important;display:flex!important}.song-detail-modal-overlay{padding:.5rem!important}.song-detail-modal{border-radius:20px!important;width:100%!important;max-width:100%!important;max-height:96vh!important}.song-detail-modal__close-btn{width:32px!important;height:32px!important;top:1rem!important;right:1rem!important}.song-detail-modal__header{border-bottom:1px solid #ffffff0f!important;min-height:auto!important;padding:2.5rem 1.25rem 1.75rem!important}.song-detail-modal__header-content{text-align:center!important;flex-direction:column!important;align-items:center!important;gap:1.25rem!important}.song-detail-modal__cover{border-radius:12px!important;width:120px!important;height:120px!important}.song-detail-modal__meta{align-items:center!important;gap:.5rem!important;padding-bottom:0!important}.song-detail-modal__meta h2{text-align:center!important;margin-bottom:0!important;font-size:1.45rem!important}.song-detail-modal__meta p{text-align:center!important;font-size:.95rem!important}.song-detail-modal__badge-row{justify-content:center!important;gap:.75rem!important}.song-detail-modal__actions-row{justify-content:center!important;width:100%!important;margin-top:.5rem!important}.song-detail-modal__actions-row button{flex:1!important;justify-content:center!important;padding:.7rem 1.2rem!important;font-size:.9rem!important}.song-detail-modal__body{padding:1.5rem 1.25rem!important}.song-detail-modal__grid{grid-template-columns:1fr!important;gap:1.25rem!important}.song-detail-modal__card{border-radius:16px!important;padding:1.25rem!important}.song-detail-modal__textarea{min-height:120px!important;padding:1rem!important}.tutor-breakdown-panel{z-index:1001!important;background-color:#0e0e16f5!important;border-bottom:none!important;border-left:none!important;border-right:none!important;border-radius:24px 24px 0 0!important;width:100vw!important;max-width:100vw!important;transition:height .3s cubic-bezier(.16,1,.3,1),transform .4s cubic-bezier(.16,1,.3,1)!important;position:fixed!important;bottom:0!important;left:0!important;right:0!important;box-shadow:0 -12px 35px #0009!important}.tutor-breakdown-panel--chat{height:75dvh!important;max-height:75dvh!important}.tutor-breakdown-panel--breakdown{height:54dvh!important;max-height:54dvh!important}.tutor-breakdown-panel__drag-handle{display:flex!important}.tutor-panel-header{border-bottom:1px solid #ffffff0d!important;padding:.65rem 1.5rem .5rem!important}.breakdown-panel-header{border-bottom:1px solid #ffffff0d!important;margin-bottom:.75rem!important;padding-bottom:.5rem!important}.breakdown-panel-container{padding:.75rem 1.5rem calc(1.5rem + env(safe-area-inset-bottom,8px)) 1.5rem!important}.tutor-chat-input-area{padding:.5rem 1.5rem calc(1.5rem + env(safe-area-inset-bottom,8px)) 1.5rem!important;border-top:1px solid #ffffff0d!important}.tutor-chat-quick-actions-wrap{margin-bottom:.5rem!important}.tutor-chat-input-container{background-color:#ffffff0a!important;border:1px solid #ffffff14!important;border-radius:20px!important;padding:.2rem!important}.tutor-chat-textarea{min-height:34px!important;padding:.5rem .85rem!important;font-size:.9rem!important}.tutor-quick-actions-container{padding-left:.5rem!important;padding-right:.5rem!important}.breakdown-spanish-text{font-size:1.75rem!important;line-height:1.2!important}.breakdown-english-text{margin-bottom:.75rem!important;font-size:1.15rem!important}.breakdown-active-segment-inner{gap:1rem!important}.breakdown-details-section{gap:.5rem!important;padding-top:.5rem!important}.breakdown-root-card{gap:.5rem!important;padding:.5rem .75rem!important}.breakdown-linguistic-card{gap:.5rem!important;padding:.6rem .85rem!important}.breakdown-mastery-actions{gap:.5rem!important;margin-top:auto!important;padding-top:.5rem!important}.vocab-action-btn{border-radius:10px!important;height:44px!important;font-size:.85rem!important}.vocab-action-btn--ask{border-radius:10px!important;height:38px!important;margin-top:.5rem!important;font-size:.85rem!important}.vocab-header-actions{align-items:stretch!important;gap:var(--space-4)!important;margin-bottom:var(--space-6)!important;flex-direction:column!important;display:flex!important}.vocab-search-container{width:100%!important;position:relative!important}.vocab-tabs-container{background:var(--bg-surface)!important;border-radius:var(--radius-full)!important;border:1px solid var(--border-color)!important;width:100%!important;padding:4px!important;display:flex!important}.vocab-tabs-container button{text-align:center!important;flex:1!important;padding:.5rem 1rem!important}.grammar-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))!important;gap:1rem!important}.lesson-phase-labels{display:none!important}.app-main-content .glass-panel{max-width:100%!important;padding:1.5rem 1.25rem!important}.desktop-only{display:none!important}.word-detail-modal-overlay{padding:.75rem!important}.word-detail-modal{border-radius:var(--radius-xl)!important;width:100%!important;max-width:100%!important;max-height:94vh!important;padding:1.5rem!important}.grammar-detail-drawer{border-left:none!important;border-top:1px solid var(--border-color)!important;width:100vw!important;max-width:100vw!important;height:72dvh!important;max-height:72dvh!important;padding:var(--space-6) var(--space-5)!important;border-radius:24px 24px 0 0!important;inset:auto 0 0!important;box-shadow:0 -12px 30px #00000080!important}.vocab-controls-right{gap:var(--space-3)!important;flex-direction:column!important;align-items:stretch!important;width:100%!important;display:flex!important}.vocab-add-btn{border-radius:var(--radius-full)!important;flex-shrink:0!important;justify-content:center!important;align-items:center!important;width:42px!important;height:42px!important;padding:0!important;display:flex!important}.library-header{flex-direction:column!important;align-items:flex-start!important;gap:.75rem!important;margin-bottom:1.5rem!important}.library-sort-container{width:100%!important;margin-bottom:0!important}.library-sort-select{background-position:right 0 center!important;width:100%!important;max-width:100%!important;padding-left:0!important}}.vocab-row-hover:hover{background:#ffffff08!important}.song-card__info-trigger{width:28px;height:28px;transition:all .25s var(--ease-out);cursor:pointer;z-index:4;border-radius:50%;justify-content:center;align-items:center;padding:0;display:flex;position:relative;-webkit-backdrop-filter:blur(8px)!important;color:var(--text-secondary)!important;background:#ffffff14!important;border:1px solid #ffffff1a!important}.song-card__cover-container .song-card__info-trigger{display:none;position:absolute;top:12px;left:12px}@media (width<=768px){.song-card__info-trigger{display:none!important}.song-card__cover-container .song-card__info-trigger{display:flex!important}}.song-card__info-trigger:hover{color:var(--text-primary);background:#6366f133;border-color:#6366f166;transform:scale(1.1);box-shadow:0 0 12px #6366f140}.song-card__play-overlay{opacity:0;transition:opacity .35s var(--ease-out);z-index:2;pointer-events:none;background:#0303078c;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.song-card__play-btn{background:var(--text-primary);width:52px;height:52px;color:var(--bg-main);box-shadow:var(--shadow-md), 0 0 25px #6366f159;transition:transform .35s var(--ease-spring);border-radius:50%;justify-content:center;align-items:center;display:flex;transform:scale(.75)}.card:hover .song-card__play-overlay{opacity:1}.card:hover .song-card__play-btn{transform:scale(1)}.card:hover .song-card__cover{transform:scale(1.05)!important}.song-card__mastered-badge{border-radius:var(--radius-full);z-index:3;text-transform:uppercase;letter-spacing:.5px;align-items:center;gap:5px;padding:4px 10px;font-size:.7rem;font-weight:700;display:flex;position:absolute;top:12px;right:12px;box-shadow:0 4px 15px #f59e0b1f;-webkit-backdrop-filter:blur(8px)!important;color:#fbbf24!important;background:#fbbf2426!important;border:1px solid #fbbf244d!important}.card.card--interactive{-webkit-backdrop-filter:blur(16px)!important;transition:transform .35s var(--ease-spring), border-color .35s var(--ease-out), box-shadow .35s var(--ease-out)!important;background:#ffffff04!important;border:1px solid #ffffff0d!important;box-shadow:0 8px 32px #0006!important}.card.card--interactive:hover{border-color:#6366f159!important;transform:translateY(-6px)scale(1.01)!important;box-shadow:0 20px 40px #0000008c,0 0 25px #6366f11f!important}.library-sort-select{color:var(--text-secondary)!important;-webkit-backdrop-filter:blur(8px)!important;backdrop-filter:blur(8px)!important;transition:all .25s var(--ease-out)!important;background-color:#ffffff05!important;background-position:right 10px center!important;border:1px solid #ffffff14!important;border-radius:20px!important;padding:.5rem 2rem .5rem 1rem!important;font-size:.85rem!important;font-weight:500!important}.library-sort-select:hover{color:var(--text-primary)!important;background-color:#ffffff0a!important;border-color:#fff3!important}.app-header__nav-item.nav-active{color:var(--text-primary)!important;font-weight:600!important}@media (width>=769px){.app-header{display:none!important}.music-player-container{z-index:999!important;max-width:1200px!important;margin:0 auto!important;display:flex!important;position:fixed!important;bottom:1.5rem!important;left:1.5rem!important;right:1.5rem!important;box-shadow:0 20px 45px #0009!important}.desktop-dock{transform-origin:0!important;-webkit-backdrop-filter:blur(25px)saturate(190%)!important;border-radius:var(--radius-full)!important;z-index:1000!important;background-color:#0909118c!important;border:1px solid #ffffff14!important;flex-direction:column!important;justify-content:center!important;align-items:center!important;width:58px!important;height:auto!important;padding:.75rem 0!important;transition:all .5s cubic-bezier(.25,1.25,.4,1)!important;display:flex!important;position:fixed!important;top:50%!important;left:1.5rem!important;transform:translateY(-50%)scale(1)!important;box-shadow:0 24px 60px #000000a6,inset 0 1px #ffffff0d!important}.desktop-dock.desktop-dock--hidden{opacity:0!important;pointer-events:none!important;transform:translate(-100px,-50%)scale(.82)!important}.desktop-dock-indicator{border-radius:var(--radius-full)!important;z-index:998!important;opacity:.45!important;pointer-events:none!important;transform-origin:50%!important;background:linear-gradient(#6366f1,#d946ef)!important;width:4px!important;height:48px!important;transition:opacity .5s cubic-bezier(.25,1.25,.4,1),height .5s cubic-bezier(.25,1.25,.4,1),transform .5s cubic-bezier(.25,1.25,.4,1)!important;position:fixed!important;top:50%!important;left:6px!important;transform:translateY(-50%)scaleY(1)!important;box-shadow:0 0 12px #6366f180!important}.desktop-dock-indicator.desktop-dock-indicator--hidden{opacity:0!important;height:0!important;transform:translateY(-50%)scaleY(0)!important}.desktop-dock__inner{width:100%!important}.desktop-dock__logo{cursor:pointer!important;justify-content:center!important;align-items:center!important;width:42px!important;height:42px!important;margin-bottom:.25rem!important;transition:all .3s!important;display:flex!important}.desktop-dock__logo svg{transition:transform .5s cubic-bezier(.16,1,.3,1)!important}.desktop-dock__logo:hover svg{transform:rotate(15deg)scale(1.1)!important}.desktop-dock__nav{flex-direction:column!important;align-items:center!important;gap:.45rem!important;width:100%!important;display:flex!important}.desktop-dock__nav-item{width:42px!important;height:42px!important;color:var(--text-secondary)!important;transition:color .25s var(--ease-out)!important;border-radius:50%!important;justify-content:center!important;align-items:center!important;text-decoration:none!important;display:flex!important}.desktop-dock__nav-item:hover{color:var(--text-primary)!important}.desktop-dock__nav-label{z-index:2!important;justify-content:center!important;align-items:center!important;display:flex!important;position:relative!important}.desktop-dock__active-glow{z-index:1!important;background-color:#6366f11f!important;border:1px solid #6366f147!important;border-radius:50%!important;position:absolute!important;inset:0!important;box-shadow:0 0 12px #6366f10d,inset 0 1px #ffffff08!important}.desktop-dock__vertical-divider{background-color:#ffffff14!important;width:24px!important;height:1px!important;margin:.35rem 0!important}.desktop-dock__add-btn{width:42px!important;height:42px!important;color:var(--text-secondary)!important;cursor:pointer!important;transition:all .25s var(--ease-out)!important;background-color:#ffffff0a!important;border:1px solid #ffffff14!important;border-radius:50%!important;justify-content:center!important;align-items:center!important;padding:0!important;display:flex!important}.desktop-dock__add-btn:hover{color:var(--text-primary)!important;background-color:#ffffff1f!important;border-color:#fff3!important}.desktop-dock__tooltip{-webkit-backdrop-filter:blur(16px)!important;color:#fff!important;white-space:nowrap!important;pointer-events:none!important;background-color:#090911f0!important;border:1px solid #ffffff1a!important;border-radius:8px!important;padding:4px 10px!important;font-size:.72rem!important;font-weight:500!important;box-shadow:4px 4px 16px #00000080!important}.container{padding:0!important}.app-main-content{height:100dvh!important;padding:2rem 90px 3.5rem!important}.app-main-content.has-active-player{padding-bottom:9.5rem!important}.library-sort-item:hover{color:var(--text-primary)!important;background-color:#ffffff0d!important}}@media (width<=768px){.desktop-dock,.desktop-dock-trigger,.desktop-dock-indicator{display:none!important}}.song-page-container{flex-direction:column;display:flex;overflow:hidden;z-index:90!important;background-color:var(--bg-main)!important;background-image:radial-gradient(circle at 10% 10%, var(--dynamic-color-1) 0%, transparent 45%), radial-gradient(circle at 90% 90%, var(--dynamic-color-2) 0%, transparent 45%), radial-gradient(circle at 45% 65%, #8b5cf60f 0%, transparent 50%), radial-gradient(#ffffff04 1px, transparent 0), radial-gradient(#ffffff02 1px, transparent 0)!important;background-position:0 0,0 0,0 0,0 0,20px 20px!important;background-size:100% 100%,100% 100%,100% 100%,40px 40px,40px 40px!important;background-attachment:fixed!important;padding:0!important;position:absolute!important;inset:0!important}@media (width>=769px){.song-page-container{height:100dvh!important;padding-left:0!important;padding-right:0!important;top:-2rem!important;left:-90px!important;right:-90px!important}}.song-page-header{z-index:100;justify-content:space-between;align-items:center;padding:1.25rem 2rem;display:flex;position:sticky;top:0;-webkit-backdrop-filter:none!important;background-color:#0000!important;border-bottom:none!important}.song-page-container .cover-background-blur{display:none!important}.song-header-btn{cursor:pointer;justify-content:center;align-items:center;display:flex;width:40px!important;height:40px!important;color:var(--text-secondary)!important;transition:all var(--duration-normal) var(--ease-out)!important;background-color:#ffffff08!important;border:1px solid #ffffff14!important;border-radius:50%!important;flex-grow:0!important;flex-shrink:0!important;align-self:center!important}.song-header-btn:hover{transform:translateY(-1px);color:var(--text-primary)!important;background-color:#ffffff14!important;border-color:#ffffff26!important}.song-header-btn:active{transform:translateY(1px)}.song-header-btn.btn-active-tutor{background-color:var(--primary)!important;border-color:var(--primary)!important;color:#fff!important;box-shadow:0 0 16px #6366f166!important}.song-header-btn.btn-active-tutor:hover{background-color:var(--primary-dark)!important;border-color:var(--primary-dark)!important}.song-header-btn.btn-active-completed{color:#facc15!important;background-color:#facc1526!important;border-color:#facc1566!important;box-shadow:0 0 16px #facc1540!important}.song-header-btn.btn-active-completed:hover{color:#fde047!important;background-color:#facc1540!important;border-color:#facc1580!important}.on-song-page .mobile-tab-bar{opacity:0;pointer-events:none;transform:translateY(100%)}.app-container.on-song-page{height:100dvh!important;overflow:hidden!important}.on-song-page .app-main-content{overflow:hidden!important}@media (width<=768px){.on-song-page .music-player-container{bottom:10px!important}.on-song-page .app-main-content{overflow:hidden!important}.song-page-container{padding-bottom:calc(var(--player-height) + 15px)!important}.song-page-header{padding:calc(1.2rem + env(safe-area-inset-top,0px)) 1rem .75rem 1rem!important;-webkit-backdrop-filter:none!important;background-color:#0000!important;border-bottom:none!important}.lyrics-scroll-container{gap:.45rem!important;padding:16vh 1.25rem 24vh!important}.lyric-line-container{gap:.2rem!important;padding:.45rem 1rem!important}.lyric-line-container.lyric-active{padding:1rem 1.5rem!important}}@media (width>=769px){.player-song-title-container{max-width:340px!important}.song-page-header,.lyrics-scroll-container{padding-left:90px!important;padding-right:90px!important}.app-container:has(.tutor-breakdown-panel) .app-main-content{position:relative;z-index:102!important}.tutor-breakdown-panel{z-index:1005!important;width:385px!important;height:calc(100vh - 200px)!important;max-height:650px!important;margin:0!important;transition:transform .5s cubic-bezier(.25,1.25,.4,1),opacity .4s,border-color .3s!important;position:fixed!important;top:50%!important;bottom:auto!important;right:1.5rem!important;transform:translateY(-50%)translate(0)!important;box-shadow:0 30px 60px #00000073,inset 0 1px #ffffff0f!important}.tutor-breakdown-panel.tutor-hidden{opacity:0!important;pointer-events:none!important;transform:translateY(-50%)translate(415px)!important}.tutor-dock-indicator{border-radius:var(--radius-full)!important;z-index:998!important;opacity:.45!important;background:linear-gradient(#ff9f43,#ec4899)!important;width:4px!important;height:48px!important;transition:opacity .5s cubic-bezier(.25,1.25,.4,1),transform .5s cubic-bezier(.25,1.25,.4,1)!important;position:fixed!important;top:50%!important;right:6px!important;transform:translateY(-50%)scaleY(1)!important;box-shadow:0 0 12px #ff9f4380!important}.tutor-dock-indicator.tutor-dock-indicator--hidden{opacity:0!important;pointer-events:none!important;transform:translateY(-50%)scaleY(0)!important}}.library-song-grid{gap:var(--space-6);grid-template-columns:repeat(auto-fill,minmax(260px,1fr));display:grid}@media (width<=768px){.app-container:has(.tutor-breakdown-panel) .app-main-content{position:relative;z-index:1002!important}.app-header__nav{display:none!important}.app-main-content::-webkit-scrollbar{width:0!important;height:0!important;display:none!important}.app-main-content{height:calc(100dvh - 60px - var(--bottom-nav-height))!important;scrollbar-width:none!important;-ms-overflow-style:none!important;padding-bottom:12px!important}.container{padding:12px!important}.library-header{flex-direction:row!important;justify-content:space-between!important;align-items:center!important;gap:12px!important;width:100%!important;margin-bottom:1.25rem!important;display:flex!important}.library-title{white-space:nowrap!important;font-size:1.5rem!important}.library-header-controls{flex-flow:row!important;justify-content:flex-end!important;align-items:center!important;gap:8px!important;width:auto!important;margin-top:0!important;display:flex!important}.library-stats-capsule{-webkit-backdrop-filter:blur(8px)!important;box-sizing:border-box!important;background:#ffffff08!important;border:1px solid #ffffff0f!important;border-radius:99px!important;flex-wrap:nowrap!important;align-items:center!important;gap:6px!important;height:34px!important;padding:0 10px!important;display:inline-flex!important}.library-stats-capsule span{font-size:.75rem!important}.library-stats-capsule div{background:#ffffff1f!important;width:1px!important;height:12px!important;display:block!important}.library-stat-label{display:none!important}.library-sort-container{width:auto!important;position:relative!important}.library-sort-popover{width:200px!important;left:auto!important;right:0!important}.library-sort-label,.library-sort-chevron{display:none!important}.library-sort-trigger{background:#ffffff0d!important;border:1px solid #ffffff14!important;border-radius:50%!important;justify-content:center!important;align-items:center!important;width:34px!important;height:34px!important;padding:0!important;display:flex!important}.song-page-title{font-size:1.3rem!important}.song-header-btn{width:44px!important;height:44px!important}.song-card__title{white-space:nowrap!important;text-overflow:ellipsis!important;height:auto!important;font-size:1.05rem!important;overflow:hidden!important}.on-song-page .app-header{opacity:0;pointer-events:none;transform:translateY(-100%)}.app-main-content.has-active-player{padding-bottom:162px!important}.library-song-grid{grid-template-columns:repeat(2,1fr)!important;gap:12px!important;display:grid!important}.library-song-grid .card{padding:0!important}.course-stats-grid{grid-template-columns:1fr 1fr!important;gap:10px!important;display:grid!important}.course-stats-grid>div:first-child{grid-column:span 2!important}.stanza-practice-btn{text-align:right!important;flex-direction:column!important;align-items:stretch!important;gap:12px!important}.stanza-practice-btn .stanza-lines{border-left:none!important;border-right:2px solid var(--border-color)!important;padding-left:0!important;padding-right:12px!important}.stanza-practice-btn .generate-badge{justify-content:center!important;align-self:flex-start!important;width:100%!important}.vocab-mobile-grid{flex-direction:column!important;gap:12px!important;display:flex!important}.vocab-mobile-card{text-align:right;flex-direction:column;gap:10px;display:flex;box-shadow:0 4px 20px #0003;-webkit-backdrop-filter:blur(12px)!important;background:#ffffff08!important;border:1px solid #ffffff14!important;border-radius:16px!important;padding:16px!important}.vocab-mobile-card__header{flex-direction:row-reverse;justify-content:space-between;align-items:flex-start;gap:8px;display:flex}.vocab-mobile-card__word{color:var(--primary);margin:0;font-size:1.35rem;font-weight:700}.vocab-mobile-card__meta{flex-direction:row-reverse;align-items:center;gap:8px;display:flex}.vocab-mobile-card__translation{color:var(--text-secondary);text-align:right;margin:0;font-size:1rem}.vocab-mobile-card__source{color:var(--text-muted);justify-content:flex-end;align-items:center;gap:4px;font-size:.8rem;display:flex}.vocab-mobile-card__footer{border-top:1px solid #ffffff0d;flex-direction:row-reverse;justify-content:space-between;align-items:center;margin-top:4px;padding-top:10px;display:flex}.vocab-mobile-card__mastery{flex-direction:row-reverse;align-items:center;gap:6px;display:flex}.vocab-mobile-card__actions{gap:8px;display:flex}.vocab-stats-grid{margin-bottom:var(--space-5)!important;grid-template-columns:repeat(3,1fr)!important;gap:8px!important;display:grid!important}.vocab-stats-card{text-align:center!important;border-radius:12px!important;flex-direction:column!important;align-items:center!important;gap:6px!important;padding:10px 6px!important}.vocab-stats-card__icon{width:32px!important;height:32px!important}.vocab-stats-card__icon svg{width:16px!important;height:16px!important}.vocab-stats-card__label{font-size:.65rem!important}.vocab-stats-card__value{font-size:.95rem!important}.vocab-filters-container{border-radius:16px!important;flex-direction:column!important;align-items:stretch!important;gap:12px!important;padding:10px!important}.vocab-tab-btn{text-align:center!important;flex:1!important;padding:8px 12px!important;font-size:.85rem!important}.vocab-filter-row{flex-direction:column!important;align-items:stretch!important;gap:12px!important;width:100%!important;min-width:0!important}.vocab-search-container{width:100%!important;max-width:100%!important}.vocab-actions-row{gap:8px!important;width:100%!important;display:flex!important}.vocab-song-filter-container{flex:1!important;min-width:0!important}.vocab-song-filter-btn{width:100%!important;min-width:0!important}.vocab-actions-dropdown-container{flex-shrink:0!important}}@media (width<=480px){.library-title{font-size:2.2rem!important}.mobile-expanded-player__body{padding:1.25rem 1.5rem 1.75rem!important}.mobile-expanded-player__artwork-container{max-height:32dvh!important;margin:.75rem 0!important}.mobile-expanded-player__artwork-card{border-radius:20px!important;width:min(65vw,240px)!important}.mobile-expanded-player__controls{gap:1.5rem!important;margin-bottom:1.25rem!important}.mobile-expanded-player__play-btn{width:68px!important;height:68px!important}.mobile-expanded-player__control-btn{width:44px!important;height:44px!important}.mobile-expanded-player__title{font-size:1.35rem!important}.mobile-expanded-player__artist{font-size:.95rem!important}.mobile-expanded-player__volume-wrapper{margin-bottom:1rem!important}}.vocab-stats-grid{gap:var(--space-4);margin-bottom:var(--space-8);grid-template-columns:repeat(auto-fit,minmax(220px,1fr));display:grid}.vocab-stats-card{-webkit-backdrop-filter:blur(16px);padding:var(--space-5);border-radius:var(--radius-md);align-items:center;gap:var(--space-4);background:#ffffff08;display:flex;box-shadow:inset 0 1px #ffffff05}.vocab-stats-card--mastered{border:1px solid #10b98126}.vocab-stats-card--learning{border:1px solid #6366f126}.vocab-stats-card--anki{border:1px solid #ec489926}.vocab-stats-card__icon{border-radius:var(--radius-sm);flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;display:flex}.vocab-stats-card--mastered .vocab-stats-card__icon{color:#10b981;background:#10b9811a}.vocab-stats-card--learning .vocab-stats-card__icon{color:var(--primary);background:#6366f11a}.vocab-stats-card--anki .vocab-stats-card__icon{color:var(--accent-pink);background:#ec48991a}.vocab-stats-card__info{flex-direction:column;min-width:0;display:flex}.vocab-stats-card__label{font-size:var(--text-xs);color:var(--text-muted);text-transform:uppercase;font-weight:700}.vocab-stats-card__value{font-size:var(--text-xl);font-weight:700}.vocab-stats-card--mastered .vocab-stats-card__value{color:#10b981}.vocab-stats-card--learning .vocab-stats-card__value{color:var(--primary)}.vocab-stats-card--anki .vocab-stats-card__value{color:var(--accent-pink)}.vocab-filters-container{margin-bottom:var(--space-6);background:#ffffff08;border:1px solid #ffffff0d;border-radius:1rem;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding:.5rem;display:flex}.vocab-tabs-container{border-radius:var(--radius-full);background:#0003;padding:.25rem;display:flex}.vocab-tab-btn{border-radius:var(--radius-full);cursor:pointer;color:var(--text-secondary);background:0 0;border:none;padding:.5rem 1.5rem;font-weight:500;transition:all .2s}.vocab-tab-btn--active{background:var(--primary)!important;color:#fff!important;font-weight:600!important}.vocab-filter-row{flex-wrap:wrap;flex:1;justify-content:flex-end;align-items:center;gap:.5rem;min-width:300px;display:flex}.vocab-search-container{flex:1;min-width:180px;max-width:240px;position:relative}.vocab-search-icon{z-index:1;position:absolute;top:50%;left:1rem;transform:translateY(-50%)}.vocab-search-input{border-radius:var(--radius-full)!important;background:#0003!important;width:100%!important;padding-left:2.5rem!important}.vocab-actions-row{align-items:center;gap:.5rem;display:flex}.vocab-song-filter-container{display:inline-block;position:relative}.vocab-song-filter-btn{box-sizing:border-box!important;border-radius:var(--radius-full)!important;border:1px solid var(--border-color)!important;height:38px!important;color:var(--text-secondary)!important;cursor:pointer!important;background-color:#ffffff08!important;outline:none!important;justify-content:space-between!important;align-items:center!important;gap:.5rem!important;min-width:180px!important;max-width:280px!important;padding:0 1.25rem!important;font-size:.85rem!important;font-weight:500!important;transition:all .2s!important;display:inline-flex!important}.vocab-song-filter-btn-text{text-overflow:ellipsis!important;white-space:nowrap!important;text-align:left!important;flex:1!important;overflow:hidden!important}.vocab-song-filter-arrow{color:var(--text-muted);flex-shrink:0!important;transition:transform .3s cubic-bezier(.25,1,.5,1)!important}.vocab-song-filter-dropdown-menu{z-index:95!important;-webkit-backdrop-filter:blur(20px)saturate(180%)!important;border-radius:var(--radius-md)!important;box-sizing:border-box!important;background-color:#0d0e18f7!important;border:1px solid #ffffff14!important;flex-direction:column!important;width:100%!important;min-width:200px!important;max-height:280px!important;padding:4px!important;display:flex!important;position:absolute!important;top:calc(100% + 8px)!important;left:0!important;overflow-y:auto!important;box-shadow:0 10px 25px #000000a6,inset 0 1px #ffffff0d!important}.vocab-song-filter-dropdown-menu::-webkit-scrollbar{width:6px!important}.vocab-song-filter-dropdown-menu::-webkit-scrollbar-track{background:0 0!important}.vocab-song-filter-dropdown-menu::-webkit-scrollbar-thumb{background:#ffffff1a!important;border-radius:3px!important}.vocab-song-filter-dropdown-menu::-webkit-scrollbar-thumb:hover{background:#fff3!important}.vocab-song-filter-option{height:auto!important;min-height:38px!important;color:var(--text-secondary)!important;text-align:left!important;cursor:pointer!important;border-radius:var(--radius-sm)!important;text-overflow:ellipsis!important;white-space:nowrap!important;box-sizing:border-box!important;background:0 0!important;border:none!important;align-items:center!important;width:100%!important;padding:0 14px!important;font-size:.85rem!important;font-weight:500!important;line-height:1.4!important;transition:all .15s!important;display:flex!important;overflow:hidden!important}.vocab-song-filter-option:hover{color:var(--text-primary)!important;background-color:#ffffff0f!important}.vocab-song-filter-option.is-selected{background-color:var(--primary)!important;color:#fff!important}.vocab-actions-dropdown-container{position:relative}.vocab-actions-dropdown-btn{box-sizing:border-box!important;border-radius:var(--radius-full)!important;border:1px solid var(--border-color)!important;height:38px!important;color:var(--text-secondary)!important;cursor:pointer!important;background-color:#ffffff08!important;outline:none!important;justify-content:center!important;align-items:center!important;gap:.5rem!important;padding:0 1.25rem!important;font-size:.85rem!important;font-weight:500!important;transition:all .2s!important;display:flex!important}.vocab-song-filter-btn:hover,.vocab-actions-dropdown-btn:hover{color:var(--text-primary)!important;background-color:#ffffff0f!important;border-color:#ffffff26!important}.vocab-actions-dropdown-menu{z-index:95!important;-webkit-backdrop-filter:blur(20px)saturate(180%)!important;border-radius:var(--radius-md)!important;background-color:#0d0e18f7!important;border:1px solid #ffffff14!important;flex-direction:column!important;width:200px!important;display:flex!important;position:absolute!important;top:calc(100% + 8px)!important;right:0!important;overflow:hidden!important;box-shadow:0 10px 25px #000000a6,inset 0 1px #ffffff0d!important}.vocab-actions-gear-icon{transition:transform .4s cubic-bezier(.25,1,.5,1)!important}.vocab-actions-gear-icon.is-active{transform:rotate(90deg)!important}.header-offline-indicator{cursor:help;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;display:flex;position:relative;color:#ef4444!important;background:#ef444414!important;border:1px solid #ef444440!important}.header-offline-indicator svg{z-index:2}.offline-glow{opacity:0;z-index:1;border:1px solid #ef4444;border-radius:50%;animation:2s ease-out infinite offline-pulse;position:absolute;inset:-1px}@keyframes offline-pulse{0%{opacity:.35;transform:scale(1)}to{opacity:0;transform:scale(1.4)}}@media (width<=480px){.song-detail-modal__actions-row{flex-wrap:nowrap!important;gap:.5rem!important}.song-detail-modal__actions-row .song-detail-modal__btn-primary{flex:0 auto!important;padding:.7rem 1.5rem!important;font-size:.85rem!important}.song-detail-modal__actions-row .song-detail-modal__btn-secondary{aspect-ratio:1!important;border-radius:50%!important;flex:0 0 42px!important;justify-content:center!important;align-items:center!important;width:42px!important;height:42px!important;padding:0!important}.song-detail-modal__actions-row .song-detail-modal__btn-secondary .song-detail-modal__btn-text{display:none!important}}