@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap";:root{--bg-gradient:linear-gradient(135deg, #1e1e24 0%, #2b2b36 100%);--surface-bg:#ffffff0d;--surface-border:#ffffff1a;--text-primary:#fff;--text-secondary:#a0a0ab;--accent-color:#6366f1;--accent-hover:#4f46e5;--success-color:#10b981;--error-color:#ef4444;--font-family:"Outfit", system-ui, Avenir, Helvetica, Arial, sans-serif;--shadow-sm:0 4px 6px #0000001a;--shadow-md:0 10px 15px #0003;--shadow-lg:0 20px 25px #0000004d;--glass-shadow:0 8px 32px 0 #0000005e;--glass-blur:blur(12px);--radius-md:16px;--radius-lg:24px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background:var(--bg-gradient);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overscroll-behavior-y:none;flex-direction:column;min-height:100vh;display:flex;overflow-x:hidden}.glass-panel{background:var(--surface-bg);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--surface-border);border-radius:var(--radius-lg);box-shadow:var(--glass-shadow)}.glass-button{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);color:var(--text-primary);border-radius:var(--radius-md);font-family:var(--font-family);cursor:pointer;background:#ffffff0d;border:1px solid #ffffff1a;outline:none;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-size:1rem;font-weight:600;transition:all .3s;display:flex}.glass-button:hover{box-shadow:var(--shadow-sm);background:#ffffff26;transform:translateY(-2px)}.glass-button:active{transform:translateY(0)}.glass-button.primary{background:var(--accent-color);border-color:var(--accent-color)}.glass-button.primary:hover{background:var(--accent-hover);box-shadow:0 4px 15px #6366f166}.glass-button.success{color:var(--success-color);background:#10b98126;border-color:#10b98180}.glass-button.success:hover{background:var(--success-color);color:#fff;box-shadow:0 4px 15px #10b98166}.glass-button.danger{color:var(--error-color);background:#ef444426;border-color:#ef444480}.glass-button.danger:hover{background:var(--error-color);color:#fff;box-shadow:0 4px 15px #ef444466}.glass-button.icon-only{border-radius:50%;padding:12px}h1,h2,h3{letter-spacing:-.02em;font-weight:700}.text-gradient{background:linear-gradient(135deg,#a8c0ff 0%,#3f2b96 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text}#root{flex-direction:column;width:100%;max-width:600px;height:100vh;margin:0 auto;padding:20px;display:flex}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;background:#0009;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal-content{width:100%;max-width:400px;padding:24px}.add-word-form{flex-direction:column;gap:12px;display:flex}.glass-input{color:var(--text-primary);border-radius:var(--radius-md);font-family:var(--font-family);background:#ffffff0d;border:1px solid #ffffff1a;outline:none;padding:12px 16px;font-size:1rem;transition:all .3s}.glass-input:focus{border-color:var(--accent-color);background:#ffffff1a;box-shadow:0 0 0 2px #6366f133}.glass-input::placeholder{color:var(--text-secondary)}.fab{width:56px;height:56px;box-shadow:var(--shadow-lg);z-index:90;border-radius:50%;justify-content:center;align-items:center;padding:0;font-size:24px;display:flex;position:fixed;bottom:30px;right:30px}.app-container{flex-direction:column;gap:20px;height:100%;display:flex}.main-content{flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex;position:relative}.app-header{justify-content:space-between;align-items:center;padding:10px 0;display:flex}.logo-text{align-items:center;gap:8px;font-size:1.5rem;font-weight:700;display:flex}.flashcard-container{perspective:1000px;z-index:10;width:100%;height:400px;position:relative}.flashcard{width:100%;height:100%;transform-style:preserve-3d;cursor:pointer;transition:transform .6s cubic-bezier(.4,0,.2,1);position:relative}.flashcard.is-flipped{transform:rotateY(180deg)}.flashcard-face{backface-visibility:hidden;text-align:center;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;padding:30px;display:flex;position:absolute}.flashcard-back{background:#ffffff14;transform:rotateY(180deg)}.word-text{margin-bottom:10px;font-size:3rem;font-weight:700}.phonetic-text{color:var(--text-secondary);margin-bottom:20px;font-family:monospace;font-size:1.2rem}.meaning-text{color:var(--success-color);margin-bottom:20px;font-size:2rem;font-weight:600}.example-text{color:var(--text-secondary);margin-top:20px;font-size:1.1rem;font-style:italic;line-height:1.5}.controls{justify-content:center;gap:20px;width:100%;margin-top:30px;display:flex}.progress-container{background:var(--surface-bg);border-radius:10px;width:100%;height:6px;margin-top:10px;overflow:hidden}.progress-fill{background:var(--accent-color);height:100%;transition:width .3s}.progress-text{color:var(--text-secondary);text-align:right;margin-top:5px;font-size:.85rem}.empty-state{text-align:center;padding:40px 20px}.empty-state h2{margin-bottom:15px;font-size:2rem}.empty-state p{color:var(--text-secondary);margin-bottom:30px}