@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--bg-color:#fff;--surface:#fff;--surface-hover:#f5f5f5;--text-primary:#1c1c1e;--text-secondary:#666;--accent:#1c1c1e;--accent-hover:#333;--danger:#ff3b30;--border-color:#00000026}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);-webkit-font-smoothing:antialiased;font-family:Inter,sans-serif;overflow-x:hidden}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-color)}::-webkit-scrollbar-thumb{background:#ccc;border-radius:4px}.app-container{flex-direction:column;max-width:600px;min-height:100vh;margin:0 auto;display:flex}.top-nav{background:var(--bg-color);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.logo-text{letter-spacing:-.5px;font-size:18px;font-weight:700}.nav-actions{align-items:center;gap:16px;display:flex}.icon-btn{color:var(--text-primary);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;display:flex;position:relative}.notification-dot{background-color:var(--danger);border-radius:50%;width:8px;height:8px;position:absolute;top:-2px;right:-2px}.sticky-top-section{z-index:10;flex-direction:column;display:flex;position:sticky;top:0}.header{-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);background:#fffffff2;padding:12px 16px}.search-container{margin-bottom:12px;position:relative}.search-icon{color:var(--text-secondary);position:absolute;top:50%;left:12px;transform:translateY(-50%)}.search-input{background:var(--surface);border:1px solid var(--border-color);width:100%;color:var(--text-primary);border-radius:8px;outline:none;padding:10px 10px 10px 36px;font-size:15px;transition:all .2s}.search-input:focus{border-color:var(--accent)}.global-controls{gap:8px;display:flex}.btn{cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:10px 16px;font-size:14px;font-weight:600;transition:all .2s;display:flex}.btn-primary{background:var(--accent);color:#fff;flex:1}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{color:var(--text-primary);border:1px solid var(--border-color);background:0 0}.btn-secondary:hover{background:var(--surface-hover)}.word-list{flex-direction:column;gap:8px;padding:12px 16px 40px;display:flex}.word-card{border:1px solid var(--border-color);cursor:pointer;background:0 0;border-radius:8px;align-items:center;padding:8px;display:flex}.word-card:hover{background:var(--surface-hover)}.word-card.active{border-color:var(--accent);background:var(--surface);border-width:2px;padding:7px}.play-btn{color:#fff;cursor:pointer;background:#1c1c1e;border:none;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;margin-right:12px;display:flex}.play-btn:active{transform:scale(.95)}.word-text{text-align:left;flex:1;font-size:16px;font-weight:500}.korean-text{color:var(--text-primary)}.separator{color:var(--text-secondary);margin:0 4px}.russian-text{color:var(--text-secondary)}.lights-out{z-index:9999;background:#000;flex-direction:column;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.lights-out-text{color:#fff;text-align:center;-webkit-user-select:none;user-select:none;flex-direction:column;flex:1;justify-content:center;padding:2rem;font-size:14vw;font-weight:400;animation:.3s fadeIn;display:flex}.turn-on-light-btn{color:#fff;cursor:pointer;background:0 0;border:1px solid #fff6;border-radius:30px;align-items:center;gap:8px;margin-bottom:32px;padding:12px 24px;font-size:16px;transition:all .2s;display:flex}.turn-on-light-btn:hover{background:#ffffff1a;border-color:#fff}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.drawer-overlay{-webkit-backdrop-filter:blur(2px);z-index:1000;opacity:0;background:#0006;animation:.3s forwards fadeOverlay;position:fixed;inset:0}.drawer{background:var(--bg-color);z-index:1001;flex-direction:column;width:300px;max-width:85%;padding:24px;transition:right .3s cubic-bezier(.16,1,.3,1);display:flex;position:fixed;top:0;bottom:0;right:-320px;box-shadow:-4px 0 24px #0000001a}.drawer.open{right:0}.drawer-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.drawer-title{font-size:18px;font-weight:700}.drawer-close{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:4px;display:flex}.drawer-content{flex-direction:column;gap:12px;display:flex}.feedback-link{background:var(--surface);border:1px solid var(--border-color);color:var(--text-primary);border-radius:12px;align-items:center;gap:12px;padding:16px;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.feedback-link:hover{background:var(--surface-hover);border-color:var(--accent)}.notification-card{background:var(--surface);border:1px solid var(--accent);border-radius:12px;padding:16px}.notification-tag{background:var(--accent);color:#fff;border-radius:12px;margin-bottom:8px;padding:4px 8px;font-size:11px;font-weight:700;display:inline-block}.notification-title{margin-bottom:4px;font-weight:700}.notification-desc{color:var(--text-secondary);font-size:13px;line-height:1.4}@keyframes fadeOverlay{to{opacity:1}}.ios-guide-modal{background:var(--bg-color);border-radius:20px 20px 0 0;width:100%;max-width:600px;padding:24px;animation:.3s cubic-bezier(.16,1,.3,1) slideUp;position:relative;box-shadow:0 -4px 24px #00000026}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.category-scroll-wrapper{white-space:nowrap;margin-top:12px;padding-bottom:8px;overflow-x:auto}.category-tabs{gap:8px;display:inline-flex}.category-tab{background:var(--surface-hover);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;border-radius:20px;padding:8px 16px;font-size:14px;font-weight:500;transition:all .2s}.category-tab:hover{background:#e5e5e5}.category-tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}.playlist-toggle-btn{transition:transform .2s}.playlist-toggle-btn:active{transform:scale(.85)}.auth-overlay-container{z-index:10000;background:#000000b3;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.auth-modal{background:var(--bg-primary);border:1px solid var(--border-color);width:100%;max-width:400px;color:var(--text-primary);border-radius:20px;padding:2rem;animation:.3s cubic-bezier(.16,1,.3,1) modalPop;box-shadow:0 10px 40px #0000004d}.auth-input:focus{outline:none;box-shadow:0 0 0 2px #6c5ce733;border-color:var(--accent)!important}@keyframes modalPop{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}