@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Outfit:wght@400;500;700;800&display=swap";:root{--color-primary:#6366f1;--color-primary-hover:#4f46e5;--color-secondary:#ec4899;--color-accent:#8b5cf6;--bg-main:#0f172a;--bg-card:#1e293bb3;--bg-card-hover:#1e293be6;--text-main:#f8fafc;--text-muted:#94a3b8;--border-radius-lg:16px;--border-radius-xl:24px;--border-color:#ffffff1a;--shadow-glow:0 0 20px #6366f14d;--transition-normal:.3s cubic-bezier(.4, 0, .2, 1)}body.light-mode{--bg-main:#f8fafc;--bg-card:#fffc;--bg-card-hover:#fff;--text-main:#0f172a;--text-muted:#475569;--border-color:#0000001a;--shadow-glow:0 4px 15px #0000000d}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-main);color:var(--text-main);-webkit-font-smoothing:antialiased;background-image:radial-gradient(at 0 0,#6366f126 0,#0000 50%),radial-gradient(at 100% 0,#ec489926 0,#0000 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#6366f180}.btn-primary:active{transform:translateY(1px)}.navbar{-webkit-backdrop-filter:saturate(180%)blur(20px);box-sizing:border-box;z-index:100;background:#ffffffb8;border-bottom:1px solid #0000000d;width:100%;height:44px;transition:background-color .3s cubic-bezier(.4,0,.2,1);position:sticky;top:0}body:not(.light-mode) .navbar{background:#161617cc;border-bottom:1px solid #ffffff1a}.navbar-container{box-sizing:border-box;flex-direction:row;justify-content:space-between;align-items:center;width:100%;max-width:1024px;height:100%;margin:0 auto;padding:0 1rem;display:flex}.navbar-brand{flex:none;align-items:center;display:flex}.navbar-brand a{align-items:center;height:100%;text-decoration:none;display:flex}.navbar-brand .logo-text{letter-spacing:-.02em;color:var(--text-main);font-family:Outfit,sans-serif;font-size:1.1rem;font-weight:700;transition:opacity .3s}.navbar-brand:hover .logo-text{opacity:.8}.logo-accent{color:var(--color-primary)}.mobile-menu-toggle{display:none}.navbar-collapse{flex:1;justify-content:space-between;align-items:center;height:100%;display:flex}.navbar-nav{flex:1;justify-content:center;height:100%;margin:0;padding:0;list-style:none;display:flex}.navbar-nav li{align-items:center;height:100%;display:flex}.nav-link{color:var(--text-main);opacity:.8;letter-spacing:-.01em;align-items:center;height:100%;padding:0 16px;font-size:12px;font-weight:400;text-decoration:none;transition:opacity .3s;display:flex}.nav-link:hover{opacity:1;color:var(--text-main)}.nav-link:after{display:none}.navbar-actions{flex:none;align-items:center;gap:.5rem;height:100%;display:flex}.user-action-container{align-items:center;gap:1rem;display:flex}.username-display{color:var(--text-main);font-size:12px;font-weight:500}.theme-toggle-btn{cursor:pointer;color:var(--text-main);opacity:.8;background:0 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0;font-size:1rem}.navbar-actions{flex-direction:column;justify-content:flex-start;align-items:flex-start;gap:1rem;width:100%;height:auto}}.home-container{flex-direction:column;padding-bottom:4rem;display:flex}.hero{text-align:center;justify-content:center;align-items:center;min-height:70vh;padding:2rem;display:flex;position:relative;overflow:hidden}.hero-content{z-index:10;max-width:800px;position:relative}.hero-title{margin-bottom:1.5rem;font-size:clamp(3rem,8vw,5.5rem);line-height:1.1}.text-gradient{background:linear-gradient(135deg, var(--color-primary), var(--color-secondary));color:#0000;-webkit-background-clip:text;background-clip:text}.hero-subtitle{color:var(--text-muted);max-width:600px;margin-bottom:3rem;margin-left:auto;margin-right:auto;font-size:1.25rem;line-height:1.6}.hero-actions{justify-content:center;align-items:center;gap:1rem;display:flex}.btn-large{padding:1rem 2rem;font-size:1.125rem}.btn-secondary{color:var(--text-main);border:1px solid var(--border-color);cursor:pointer;transition:var(--transition-normal);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffff0d;border-radius:9999px;padding:.9rem 1.9rem;font-family:Outfit,sans-serif;font-size:1.125rem;font-weight:600}.btn-secondary:hover{background:#ffffff1a;border-color:#fff3}.decoration{filter:blur(80px);z-index:0;opacity:.5;border-radius:50%;position:absolute}.blob-1{background:var(--color-primary);width:400px;height:400px;animation:10s ease-in-out infinite float;top:-100px;left:-100px}.blob-2{background:var(--color-secondary);width:300px;height:300px;animation:12s ease-in-out infinite reverse float;bottom:-50px;right:-50px}@keyframes float{0%,to{transform:translateY(0)scale(1)}50%{transform:translateY(-30px)scale(1.05)}}.features-section{width:100%;max-width:1200px;margin:0 auto;padding:4rem 2rem}.section-title{text-align:center;margin-bottom:3rem;font-size:2.5rem}.features-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;display:grid}.feature-card{text-align:center;padding:2.5rem;transition:transform .4s cubic-bezier(.4,0,.2,1)}.feature-card:hover{background:var(--bg-card-hover);border-color:#fff3;transform:translateY(-10px)}.feature-icon{margin-bottom:1.5rem;font-size:3rem}.feature-card h3{margin-bottom:1rem;font-size:1.5rem}.feature-card p{color:var(--text-muted);line-height:1.6}.page-container{max-width:1200px;min-height:80vh;margin:0 auto;padding:2rem}.page-header{margin-bottom:3rem}.page-header h1{background:linear-gradient(135deg, var(--color-primary), var(--color-secondary));color:#0000;-webkit-background-clip:text;background-clip:text;margin-bottom:.5rem;font-size:3rem}.subtitle{color:var(--text-muted);font-size:1.2rem}.text-center{text-align:center}.hangul-module-container{background:linear-gradient(135deg,#f5f7fa 0%,#c3cfe2 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#0000001a}.hangul-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:1.5rem;padding:.5rem;display:grid}.hangul-card{-webkit-backdrop-filter:blur(12px);cursor:pointer;background:#ffffff73;border:1px solid #fffc;border-radius:20px;flex-direction:column;justify-content:center;align-items:center;padding:2rem 1.5rem;transition:all .4s cubic-bezier(.175,.885,.32,1.275);display:flex;position:relative;overflow:hidden;box-shadow:0 4px 15px #00000008,inset 0 0 0 1px #ffffff80}.hangul-card:hover{background:#ffffffbf;transform:translateY(-8px)scale(1.03);box-shadow:0 15px 35px #0000001a,0 5px 15px #4a90e226,inset 0 0 0 1px #fff}.hangul-card:before{content:"";opacity:0;background:linear-gradient(90deg,#4a90e2,#63b3ed);height:4px;transition:opacity 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.hangul-type-badge{color:#3182ce;background:#3182ce1f}@media (width<=768px){.hangul-module-container{border-radius:16px;padding:1.5rem}.hangul-title{font-size:2.2rem}.hangul-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:1rem}.hangul-char{font-size:3rem}.hangul-filters{flex-wrap:wrap;justify-content:center}}.vocab-module{background:linear-gradient(135deg,#f6f8fd 0%,#f1f5f9 100%);justify-content:center;align-items:center;min-height:80vh;padding:2rem;font-family:Inter,system-ui,-apple-system,sans-serif;display:flex}.glass-panel{-webkit-backdrop-filter:blur(16px);background:#ffffffb3;border:1px solid #fff6;border-radius:24px;flex-direction:column;align-items:center;width:100%;max-width:480px;padding:3rem 2rem;display:flex;box-shadow:0 20px 40px #0000000d,0 1px 3px #0000000d}.module-title{color:#1e293b;letter-spacing:-.02em;margin-bottom:1.5rem;font-size:1.8rem;font-weight:700}.progress-bar{background-color:#e2e8f0;border-radius:99px;width:100%;height:6px;margin-bottom:.5rem;overflow:hidden}.progress-fill{background:linear-gradient(90deg,#6366f1 0%,#8b5cf6 100%);border-radius:99px;height:100%;transition:width .4s cubic-bezier(.4,0,.2,1)}.progress-text{color:#64748b;margin-bottom:2rem;font-size:.875rem;font-weight:500}.flashcard-container{perspective:1000px;cursor:pointer;width:100%;height:300px;margin-bottom:2.5rem}.flashcard{text-align:center;width:100%;height:100%;transform-style:preserve-3d;border-radius:20px;transition:transform .6s cubic-bezier(.4,0,.2,1);position:relative}.flashcard.flipped{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{backface-visibility:hidden;background:#fff;border:1px solid #e2e8f0cc;border-radius:20px;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:absolute;box-shadow:0 10px 25px #0000001a}.flashcard-front{background:linear-gradient(135deg,#fff 0%,#f8fafc 100%)}.flashcard-front h2{color:#0f172a;text-shadow:2px 2px 4px #00000005;margin:0;font-size:3.5rem;font-weight:800}.flip-hint{color:#94a3b8;text-transform:uppercase;letter-spacing:.05em;font-size:.85rem;font-weight:600;position:absolute;bottom:1.5rem}.flashcard-back{color:#fff;background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 100%);border:none;transform:rotateY(180deg)}.flashcard-back h3{margin:0 0 1rem;font-size:2.5rem;font-weight:700}.romanization{opacity:.9;margin:0;font-size:1.25rem;font-style:italic;font-weight:400}.action-buttons{gap:1rem;width:100%;display:flex}.btn{cursor:pointer;border:none;border-radius:16px;flex:1;justify-content:center;align-items:center;gap:.5rem;padding:1rem;font-size:1rem;font-weight:600;transition:all .2s;display:flex}.btn-dont-know{color:#ef4444;background:#fff;border:1px solid #fee2e2;box-shadow:0 4px 6px -1px #ef44441a,0 2px 4px -1px #ef44440f}.btn-dont-know:hover{background:#fef2f2;transform:translateY(-2px);box-shadow:0 6px 8px -1px #ef444426,0 4px 6px -1px #ef44441a}.btn-know{color:#fff;background:#10b981;box-shadow:0 4px 6px -1px #10b98133,0 2px 4px -1px #10b9811a}.btn-know:hover{background:#059669;transform:translateY(-2px);box-shadow:0 6px 8px -1px #10b9814d,0 4px 6px -1px #10b98133}.btn:active{transform:translateY(0)}.icon{font-size:1.25rem;line-height:1}.audio-btn{border:1px solid var(--border-color);cursor:pointer;z-index:10;background:#fffc;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.2rem;transition:all .2s;display:flex;position:absolute;top:1.5rem;right:1.5rem;box-shadow:0 4px 6px #0000000d}.audio-btn:hover{background:#fff;transform:scale(1.1);box-shadow:0 6px 12px #0000001a}body.dark-mode .audio-btn{background:#00000080;border-color:#ffffff1a}body.dark-mode .audio-btn:hover{background:#000c}.grammar-container{max-width:1040px;color:var(--text-main,#1e293b);perspective:1000px;margin:0 auto;padding:2rem 1rem;font-family:Inter,system-ui,-apple-system,sans-serif}.grammar-header{text-align:center;margin-bottom:3.5rem}.grammar-header h1{background:linear-gradient(135deg, var(--color-primary,#6366f1) 0%, #a855f7 100%);-webkit-text-fill-color:transparent;letter-spacing:-.03em;-webkit-background-clip:text;margin-bottom:1rem;font-size:2.75rem;font-weight:800}.grammar-header p{color:var(--text-muted,#64748b);max-width:600px;margin:0 auto;font-size:1.15rem}.grammar-cards-wrapper{flex-direction:column;gap:2.5rem;display:flex}.glassmorphism{-webkit-backdrop-filter:blur(20px);background:#fff9;border:1px solid #fffc;border-radius:28px;transition:transform .4s cubic-bezier(.175,.885,.32,1.275),box-shadow .4s;overflow:hidden;box-shadow:0 10px 40px -10px #1f26871a}body:not(.light-mode) .glassmorphism{background:#1e293b99;border:1px solid #ffffff14;box-shadow:0 10px 40px -10px #0006}.glassmorphism:hover{transform:translateY(-6px);box-shadow:0 20px 50px -15px #1f268726}.card-content{padding:3rem}@media (width<=768px){.card-content{padding:2rem}}.card-content h2{align-items:center;gap:1rem;margin-top:0;margin-bottom:1.2rem;font-size:2rem;font-weight:700;display:flex}.card-content h2:before{content:"";background:linear-gradient(to bottom, var(--color-primary,#6366f1), #a855f7);border-radius:6px;width:6px;height:28px;display:block}.description{color:var(--text-muted,#475569);margin-bottom:2.5rem;font-size:1.1rem;line-height:1.7}.comparison-box{background:#f1f5f999;border:1px solid #ffffff80;border-radius:20px;flex-direction:column;gap:1.5rem;margin-bottom:2rem;padding:2rem;display:flex}body:not(.light-mode) .comparison-box{background:#0f172a99;border:1px solid #ffffff0d}.language-example{border-bottom:1px dashed #94a3b866;flex-direction:column;gap:.75rem;padding-bottom:1.5rem;display:flex}.language-example:last-child{border-bottom:none;padding-bottom:0}.lang-label{text-transform:uppercase;letter-spacing:.1em;color:var(--color-primary,#6366f1);font-size:.85rem;font-weight:700}.sentence{flex-wrap:wrap;align-items:center;gap:.6rem;font-size:1.6rem;font-weight:600;display:flex}.korean .sentence{font-size:1.8rem}.subject{color:#ea580c;background:#ea580c1a;border:1px solid #ea580c33;border-radius:8px;padding:.25rem .75rem}.verb{color:#16a34a;background:#16a34a1a;border:1px solid #16a34a33;border-radius:8px;padding:.25rem .75rem}.object{color:#2563eb;background:#2563eb1a;border:1px solid #2563eb33;border-radius:8px;padding:.25rem .75rem}.pronunciation{color:var(--text-muted,#64748b);margin-top:.2rem;font-size:1rem;font-style:italic}.legend{border-top:1px dashed #94a3b866;flex-wrap:wrap;justify-content:center;gap:2rem;padding-top:1.5rem;display:flex}.legend-item{color:var(--text-main,#334155);align-items:center;gap:.5rem;font-size:1rem;font-weight:600;display:flex}.dot{border-radius:50%;width:12px;height:12px;display:inline-block;box-shadow:0 2px 4px #0000001a}.subject-dot{background:#ea580c}.object-dot{background:#2563eb}.verb-dot{background:#16a34a}.particles-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;display:grid}.particle-item{background:#ffffffb3;border:1px solid #ffffffe6;border-radius:20px;padding:2rem;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 16px #0000000a}body:not(.light-mode) .particle-item{background:#1e293b66;border:1px solid #ffffff1a}.particle-item:hover{background:#ffffffe6;transform:scale(1.03)translateY(-4px);box-shadow:0 12px 30px #00000014}body:not(.light-mode) .particle-item:hover{background:#1e293bb3}.particle-header{border-bottom:1px solid #94a3b84d;justify-content:space-between;align-items:center;margin-bottom:1.25rem;padding-bottom:1rem;display:flex}.particle-chars{background:linear-gradient(135deg, var(--color-primary,#6366f1) 0%, #a855f7 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:2.2rem;font-weight:800}.particle-name{text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted,#64748b);background:#6366f11a;border-radius:20px;padding:.3rem .75rem;font-size:.85rem;font-weight:700}.particle-item p{color:var(--text-main,#334155);margin-bottom:1.75rem;font-size:1.05rem;line-height:1.6}.usage{flex-direction:column;gap:.75rem;display:flex}.rule{color:var(--text-main,#334155);background:#f1f5f9cc;border:1px solid #00000008;border-radius:12px;justify-content:space-between;align-items:center;padding:.75rem 1rem;font-size:.95rem;display:flex}body:not(.light-mode) .rule{color:#e2e8f0;background:#0f172acc;border-color:#ffffff0d}.rule-badge{color:var(--color-primary,#6366f1);background:#fffc;border-radius:6px;padding:.2rem .6rem;font-size:1.2rem;font-weight:800;box-shadow:0 1px 3px #0000000d}body:not(.light-mode) .rule-badge{background:#1e293bcc}:root{--bg-card:#ffffff26;--title-color:#1a1a2e;--subtitle-color:#16213e;--text-muted:#4a4a4a;--accent-color:#0f3460}.dashboard-container{justify-content:center;align-items:center;width:100%;padding:2rem;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex}.dashboard-glass-card{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);text-align:center;border:1px solid #ffffff40;border-radius:24px;width:100%;max-width:500px;padding:3rem;transition:transform .3s,box-shadow .3s;box-shadow:0 8px 32px #1f26871a}.dashboard-glass-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px #1f268726}.welcome-message{color:var(--title-color);letter-spacing:-.02em;margin-bottom:2rem;font-size:2.25rem;font-weight:700}.progress-section{background:#ffffff4d;border-radius:16px;margin-bottom:2.5rem;padding:2rem;box-shadow:inset 0 2px 4px #fff3}.progress-title{color:var(--subtitle-color);margin-bottom:1.5rem;font-size:1.25rem;font-weight:600}.progress-bar-container{background:#0000000d;border-radius:12px;width:100%;height:14px;margin-bottom:1rem;position:relative;overflow:hidden;box-shadow:inset 0 1px 3px #0000001a}.progress-bar-fill{background:linear-gradient(90deg,#667eea 0%,#764ba2 100%);border-radius:12px;width:0%;height:100%;animation:1.5s cubic-bezier(.22,1,.36,1) .2s forwards fillProgress}@keyframes fillProgress{0%{width:0%}to{width:var(--target-width)}}.progress-text{color:var(--text-muted);font-size:1.1rem;font-weight:500}.motivation-section{background:linear-gradient(135deg,#fff6,#ffffff1a);border:1px solid #fff6;border-radius:12px;margin-top:1rem;padding:1.5rem}.motivation-text{color:var(--accent-color);margin:0;font-size:1.15rem;font-weight:600}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1rem;width:100%;margin-bottom:2rem;display:grid}@media (width<=480px){.dashboard-glass-card{padding:1.5rem}.stats-grid{grid-template-columns:1fr}}.quiz-container{justify-content:center;align-items:center;width:100%;padding:2rem;font-family:system-ui,-apple-system,sans-serif;display:flex}.quiz-card{-webkit-backdrop-filter:blur(20px);width:100%;max-width:540px;color:inherit;background:#ffffff1a;border:1px solid #fff3;border-radius:24px;padding:3rem 2.5rem;transition:all .3s;position:relative;overflow:hidden;box-shadow:0 8px 32px #00000026}.quiz-header{opacity:.8;text-transform:uppercase;letter-spacing:1.5px;justify-content:space-between;align-items:center;margin-bottom:2rem;font-size:.9rem;font-weight:600;display:flex}.quiz-question{margin-bottom:2.5rem;font-size:1.5rem;font-weight:700;line-height:1.4}.quiz-options{flex-direction:column;gap:1rem;display:flex}.quiz-option{color:inherit;cursor:pointer;text-align:left;background:#ffffff0d;border:1px solid #ffffff26;border-radius:16px;justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;font-size:1.1rem;font-weight:500;transition:all .25s cubic-bezier(.25,.8,.25,1);display:flex}.quiz-option:hover:not(:disabled){background:#ffffff26;border-color:#ffffff4d;transform:translateY(-2px);box-shadow:0 4px 15px #0000001a}.quiz-option:active:not(:disabled){transform:scale(.98)}.quiz-option.correct{background:#2ecc7133;border-color:#2ecc7180;box-shadow:0 0 20px #2ecc7133}.quiz-option.incorrect{background:#e74c3c33;border-color:#e74c3c80;box-shadow:0 0 20px #e74c3c33}.quiz-option:disabled{cursor:default}.next-button{color:#fff;cursor:pointer;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border:none;border-radius:16px;width:100%;margin-top:2.5rem;padding:1.25rem;font-size:1.1rem;font-weight:600;transition:all .3s;box-shadow:0 4px 15px #764ba24d}.next-button:hover{transform:translateY(-2px);box-shadow:0 8px 25px #764ba266}.next-button:active{transform:scale(.98)}.quiz-results{text-align:center;padding:2rem 0;animation:.5s ease-in-out fadeIn}.quiz-results h2{margin-bottom:1rem;font-size:2.5rem;font-weight:800}.quiz-results p{opacity:.9;margin-bottom:2.5rem;font-size:1.25rem}.restart-button{color:inherit;cursor:pointer;background:#ffffff1a;border:1px solid #ffffff4d;border-radius:30px;padding:1.25rem 2.5rem;font-size:1.1rem;font-weight:600;transition:all .3s}.restart-button:hover{background:#fff3;border-color:#ffffff80;transform:translateY(-2px);box-shadow:0 4px 15px #ffffff1a}.restart-button:active{transform:scale(.98)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.admin-container{animation:fadeIn var(--transition-normal);justify-content:center;align-items:center;padding:2rem;display:flex}.admin-glass-card{background:var(--bg-card);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:20px;width:100%;max-width:1000px;padding:2.5rem;box-shadow:0 10px 30px #0000001a}.admin-title{text-align:center;color:var(--text-main);margin-bottom:2rem;font-size:2rem}.admin-grid{grid-template-columns:1fr 1fr;gap:2rem;display:grid}@media (width<=768px){.admin-grid{grid-template-columns:1fr}}.admin-form-section,.admin-list-section{background:#ffffff0d;border-radius:12px;padding:1.5rem}body.light-mode .admin-form-section,body.light-mode .admin-list-section{background:#00000005}.admin-form-section h2,.admin-list-section h2{color:var(--text-main);border-bottom:1px solid var(--border-color);margin-bottom:1.5rem;padding-bottom:.5rem;font-size:1.25rem}.form-group{margin-bottom:1rem}.form-group label{color:var(--text-muted);margin-bottom:.5rem;font-size:.9rem;display:block}.form-group input{border:1px solid var(--border-color);background:var(--bg-main);width:100%;color:var(--text-main);transition:all var(--transition-normal);border-radius:8px;padding:.75rem;font-size:1rem}.form-group input:focus{border-color:var(--color-primary);outline:none;box-shadow:0 0 0 3px #6366f133}.w-100{width:100%}.mt-3{margin-top:1rem}.vocab-list{flex-direction:column;gap:.5rem;max-height:400px;padding-right:.5rem;display:flex;overflow-y:auto}.vocab-list::-webkit-scrollbar{width:6px}.vocab-list::-webkit-scrollbar-track{background:0 0}.vocab-list::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:10px}.vocab-list-item{background:var(--bg-main);transition:all var(--transition-normal);border:1px solid #0000;border-radius:8px;justify-content:space-between;align-items:center;padding:.75rem 1rem;display:flex}.vocab-list-item:hover{border-color:var(--border-color);transform:translate(4px)}.vocab-info{flex-direction:column;gap:.25rem;display:flex}.vocab-korean{color:var(--text-main);font-size:1.1rem;font-weight:700}.vocab-translation{color:var(--text-muted);font-size:.85rem}.btn-danger-sm{color:#ef4444;cursor:pointer;background:0 0;border:none;border-radius:50%;padding:.5rem;font-size:1.2rem;transition:background .2s}.btn-danger-sm:hover{background:#ef44441a}.auth-container{justify-content:center;align-items:center;height:calc(100vh - 80px);padding:1rem;display:flex}.auth-glass-card{background:var(--bg-card);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);width:100%;max-width:450px;animation:slideUp var(--transition-normal);border-radius:20px;padding:3rem;box-shadow:0 10px 40px #00000026}.auth-title{text-align:center;color:var(--text-main);margin-bottom:2rem;font-size:2rem}.auth-error{color:#ef4444;text-align:center;background:#ef44441a;border:1px solid #ef444433;border-radius:8px;margin-bottom:1.5rem;padding:.75rem}.auth-toggle-text{text-align:center;color:var(--text-muted);margin-top:2rem}.auth-toggle-link{color:var(--color-primary);cursor:pointer;transition:opacity var(--transition-normal);font-weight:700}.auth-toggle-link:hover{opacity:.8}.app-container{flex-direction:column;width:100%;min-height:100vh;display:flex}.main-content{flex:1;width:100%}