@import"https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;500;600;700;800&display=swap";.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem;margin-top:2rem}.stats-card{padding:1.5rem;display:flex;flex-direction:column;gap:.5rem}.stats-value{font-size:2.5rem;font-weight:800;color:var(--primary);font-family:var(--font-display)}.nav-logo{font-family:var(--font-display);font-weight:800;font-size:1.5rem;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;display:flex;align-items:center;gap:.5rem}.nav-links{list-style:none;display:flex;flex-direction:column;gap:.75rem}.nav-link{display:flex;align-items:center;gap:1rem;padding:.75rem 1rem;border-radius:12px;color:var(--text-secondary);font-weight:600;transition:all .2s ease;background:transparent;border:none;width:100%;text-align:left;cursor:pointer;outline:none}.nav-link:hover{background:#ff475714;color:var(--text-primary);transform:translate(4px)}.nav-link.active{background:#ff47571f;color:var(--text-primary);transform:translate(4px)}.theme-btn{background:transparent;border:1px solid var(--glass-border);color:var(--text-primary);cursor:pointer;padding:.5rem 1rem;border-radius:10px;display:flex;align-items:center;gap:.5rem;font-weight:600;transition:all .2s ease;margin-top:auto}.theme-btn:hover{background:var(--glass-border)}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;margin-top:1.5rem}.kanji-card{padding:1.5rem;text-align:center;position:relative;display:flex;flex-direction:column;justify-content:space-between;height:220px}.kanji-char{font-size:3.5rem;font-weight:700;margin:.5rem 0;background:linear-gradient(135deg,var(--text-primary),var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.vocab-card{padding:1.5rem;display:flex;flex-direction:column;justify-content:space-between;min-height:180px}.grammar-card{padding:1.5rem;display:flex;flex-direction:column;gap:1rem}.grammar-title{font-size:1.25rem;color:var(--primary);border-bottom:2px solid var(--glass-border);padding-bottom:.5rem}.filter-bar{display:flex;gap:1rem;margin-bottom:2rem;flex-wrap:wrap}.search-input{flex-grow:1;min-width:250px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:12px;padding:.75rem 1.25rem;color:var(--text-primary);font-family:inherit;font-size:1rem;outline:none;transition:all .2s ease}.search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #ff475733}.filter-select{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:12px;padding:.75rem 1.25rem;color:var(--text-primary);font-family:inherit;font-size:1rem;outline:none;cursor:pointer}.flashcard-container{max-width:500px;height:350px;perspective:1000px;margin:2rem auto}.flashcard-inner{position:relative;width:100%;height:100%;transition:transform .6s;transform-style:preserve-3d;cursor:pointer}.flashcard-container.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:2rem;text-align:center}.flashcard-back{transform:rotateY(180deg);background:var(--glass-bg)}.quiz-container{max-width:700px;margin:2rem auto;padding:2rem}.quiz-option{width:100%;text-align:left;padding:1rem 1.5rem;background:#ffffff08;border:1px solid var(--glass-border);border-radius:12px;color:var(--text-primary);font-size:1rem;font-family:inherit;cursor:pointer;transition:all .2s ease;margin-bottom:.75rem}.quiz-option:hover{background:#ff47571a;border-color:var(--primary);transform:translate(4px)}.quiz-option.correct{background:#10b98126;border-color:var(--success);color:var(--success)}.quiz-option.incorrect{background:#ef444426;border-color:var(--danger);color:var(--danger)}.overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;justify-content:center;align-items:center;z-index:100}.modal-content{width:90%;max-width:550px;padding:2.5rem;position:relative}.close-btn{position:absolute;top:1rem;right:1rem;background:transparent;border:none;color:var(--text-secondary);font-size:1.5rem;cursor:pointer}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border:none;padding:.75rem 1.5rem;border-radius:10px;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 12px #ff475740}.btn-secondary{background:transparent;color:var(--text-primary);border:1px solid var(--glass-border);padding:.75rem 1.5rem;border-radius:10px;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-secondary:hover{background:var(--glass-border)}.speaker-btn{background:transparent;border:none;color:var(--primary);cursor:pointer;font-size:1.2rem;display:inline-flex;align-items:center;justify-content:center;transition:transform .1s}.speaker-btn:active{transform:scale(.9)}:root{--primary: #ff4757;--primary-hover: #ff6b81;--secondary: #ffa502;--accent: #10ac84;--success: #2ed573;--warning: #ffa502;--danger: #ff4757;--bg-gradient: radial-gradient(circle at top right, #1f1215 0%, #0d0f12 50%, #07080a 100%);--glass-bg: rgba(13, 15, 18, .75);--glass-border: rgba(255, 255, 255, .06);--glass-border-hover: rgba(255, 71, 87, .35);--text-primary: #f1f2f6;--text-secondary: #a4b0be;--text-muted: #747d8c;--card-shadow: 0 8px 32px 0 rgba(0, 0, 0, .45);--glow-color: rgba(255, 71, 87, .15);--sidebar-bg: rgba(10, 12, 16, .85);--sidebar-border: rgba(255, 255, 255, .04);--font-display: "Outfit", sans-serif;--font-sans: "Plus Jakarta Sans", sans-serif;transition:background .3s ease,color .3s ease}[data-theme=light]{--bg-gradient: radial-gradient(circle at top right, #fff5f5 0%, #f5f6fa 60%, #dfe4ea 100%);--glass-bg: rgba(255, 255, 255, .8);--glass-border: rgba(0, 0, 0, .07);--glass-border-hover: rgba(255, 71, 87, .25);--text-primary: #2f3542;--text-secondary: #57606f;--text-muted: #a4b0be;--card-shadow: 0 8px 32px 0 rgba(255, 71, 87, .04);--glow-color: rgba(255, 71, 87, .08);--sidebar-bg: rgba(255, 255, 255, .95);--sidebar-border: rgba(0, 0, 0, .05)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background:var(--bg-gradient);color:var(--text-primary);min-height:100vh;overflow-x:hidden;line-height:1.6;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;letter-spacing:-.02em}a{color:var(--primary);text-decoration:none;transition:all .2s ease}a:hover{color:var(--secondary)}.glass-panel{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:16px;box-shadow:var(--card-shadow);transition:transform .3s cubic-bezier(.4,0,.2,1),border-color .3s ease,box-shadow .3s ease}.glass-panel:hover{border-color:var(--glass-border-hover);box-shadow:var(--card-shadow),0 0 20px var(--glow-color)}.glass-interactive{cursor:pointer}.glass-interactive:active{transform:scale(.98)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .4s ease forwards}.app-container{display:flex;min-height:100vh}.sidebar{width:260px;flex-shrink:0;border-right:1px solid var(--sidebar-border);padding:2rem 1.5rem;display:flex;flex-direction:column;gap:2rem;background:var(--sidebar-bg);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);z-index:10;box-shadow:4px 0 32px #0000000a}.main-content{flex-grow:1;padding:2rem 3rem;max-width:1400px;margin:0 auto;width:100%}.mobile-header,.mobile-backdrop{display:none}@media (max-width: 768px){.app-container{flex-direction:column}.mobile-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;background:var(--sidebar-bg);border-bottom:1px solid var(--sidebar-border);position:fixed;top:0;left:0;right:0;height:60px;z-index:90;box-shadow:0 4px 20px #0000000d}.hamburger-btn{background:transparent;border:none;font-size:1.8rem;color:var(--text-primary);cursor:pointer;outline:none;display:flex;align-items:center}.mobile-backdrop{display:block;position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:95}.sidebar{position:fixed;top:0;left:0;bottom:0;width:280px;height:100vh;transform:translate(-100%);transition:transform .3s cubic-bezier(.4,0,.2,1);z-index:100;box-shadow:8px 0 32px #00000040;border-right:1px solid var(--sidebar-border)}.sidebar.open{transform:translate(0)}.main-content{padding:1.5rem;margin-top:60px}}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--glass-border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}