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pulse}.chat-typing__dot:nth-child(3){animation-delay:.4s}.chat-input-area{padding:var(--space-sm);border-top:var(--border-subtle);gap:var(--space-sm);background:var(--bg-primary);display:flex}.chat-input{background:var(--bg-input);border:var(--border-subtle);border-radius:var(--radius-xl);resize:none;flex:1;min-height:44px;max-height:120px;padding:12px 16px;font-size:14px;line-height:1.4}.chat-input:focus{border-color:#00c85366}.chat-send-btn{border-radius:var(--radius-full);background:var(--gradient-green);width:44px;height:44px;transition:var(--transition-fast);flex-shrink:0;justify-content:center;align-items:center;font-size:18px;display:flex}.chat-send-btn:disabled{opacity:.3}.chat-send-btn:active{transform:scale(.9)}.chat-suggestions{gap:var(--space-sm);padding:var(--space-sm);scrollbar-width:none;display:flex;overflow-x:auto}.chat-suggestions::-webkit-scrollbar{display:none}.chat-suggestion{background:var(--bg-glass);border:var(--border-subtle);border-radius:var(--radius-xl);color:var(--text-secondary);white-space:nowrap;transition:var(--transition-fast);padding:8px 14px;font-size:12px}.flashcard-container{padding:var(--space-xl) 0;flex-direction:column;align-items:center;display:flex}.flashcard-counter{color:var(--text-muted);margin-bottom:var(--space-lg);font-size:13px}.flashcard{perspective:1000px;cursor:pointer;width:100%;max-width:340px;min-height:300px;margin-bottom:var(--space-xl)}.flashcard__inner{width:100%;height:300px;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.4,0,.2,1);position:relative}.flashcard--flipped .flashcard__inner{transform:rotateY(180deg)}.flashcard__face{backface-visibility:hidden;padding:var(--space-xl);border-radius:var(--radius-xl);border:var(--border-card);text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.flashcard__front{background:var(--gradient-glass)}.flashcard__back{background:var(--gradient-card);transform:rotateY(180deg)}.flashcard__word{margin-bottom:var(--space-sm);font-size:28px;font-weight:800}.flashcard__pos{color:var(--green-light);margin-bottom:var(--space-sm);font-size:13px}.flashcard__phonetic{color:var(--text-muted);font-size:14px;font-family:var(--font-mono);margin-bottom:var(--space-md)}.flashcard__tap-hint{color:var(--text-muted);opacity:.5;font-size:12px}.flashcard__definition{color:var(--text-primary);margin-bottom:var(--space-md);font-size:15px;line-height:1.6}.flashcard__bangla{font-family:var(--font-bangla);color:var(--green-light);font-size:16px;line-height:1.6}.flashcard-actions{gap:var(--space-lg);display:flex}.flashcard-action{flex-direction:column;align-items:center;gap:6px;display:flex}.flashcard-action__btn{border-radius:var(--radius-full);width:56px;height:56px;transition:var(--transition-fast);justify-content:center;align-items:center;font-size:24px;display:flex}.flashcard-action__btn:active{transform:scale(.9)}.flashcard-action__btn--skip{background:#f443361a;border:1px solid #f443364d}.flashcard-action__btn--know{background:#00c8531a;border:1px solid #00c8534d}.flashcard-action__label{color:var(--text-muted);font-size:11px}.loading-spinner{padding:var(--space-3xl) 0;justify-content:center;align-items:center;display:flex}.loading-spinner__circle{border:3px solid #ffffff1a;border-top-color:var(--green-primary);border-radius:var(--radius-full);width:36px;height:36px;animation:.8s linear infinite spin}.empty-state{text-align:center;padding:var(--space-3xl) var(--space-lg)}.empty-state__icon{margin-bottom:var(--space-md);opacity:.5;font-size:48px}.empty-state__title{margin-bottom:var(--space-sm);font-size:18px;font-weight:600}.empty-state__text{color:var(--text-muted);font-size:14px}.toast{top:calc(var(--nav-height) + var(--space-md));max-width:calc(var(--max-width) - var(--space-xl));background:var(--bg-secondary);border:var(--border-card);border-radius:var(--radius-md);z-index:300;align-items:center;gap:var(--space-sm);box-shadow:var(--shadow-lg);padding:12px 20px;font-size:13px;font-weight:500;animation:.3s ease-out slideUp,.3s ease-out fadeIn;display:flex;position:fixed;left:50%;transform:translate(-50%)}@media (width>=481px){.app-container{border-left:var(--border-subtle);border-right:var(--border-subtle)}}@media (width<=360px){:root{--space-md:12px;--space-lg:20px}.home-hero__title{font-size:20px}.word-of-day__word{font-size:24px}}.text-green{color:var(--green-primary)}.text-muted{color:var(--text-muted)}.text-bangla{font-family:var(--font-bangla)}.font-bold{font-weight:700}.mt-sm{margin-top:var(--space-sm)}.mt-md{margin-top:var(--space-md)}.mt-lg{margin-top:var(--space-lg)}.mb-sm{margin-bottom:var(--space-sm)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.chat-container{height:calc(100vh - var(--nav-height) - var(--tab-height));margin:0 calc(-1 * var(--space-md));background:#0000001a;flex-direction:column;display:flex}.chat-messages{padding:var(--space-md);gap:var(--space-md);scrollbar-width:thin;scrollbar-color:#ffffff1a transparent;flex-direction:column;flex:1;display:flex;overflow-y:auto}.chat-message{gap:var(--space-sm);animation:.3s ease-out fadeIn;display:flex}.chat-message--user{flex-direction:row-reverse}.chat-message__avatar{border-radius:var(--radius-full);background:var(--bg-glass);border:var(--border-subtle);flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:14px;display:flex}.chat-message__bubble{border-radius:var(--radius-lg);max-width:85%;transition:var(--transition-base);padding:12px 16px;font-size:15px;line-height:1.5;position:relative}.chat-message--ai .chat-message__bubble{background:var(--bg-secondary);border:var(--border-subtle);border-top-left-radius:4px;box-shadow:0 4px 12px #0000001a}.chat-message--user .chat-message__bubble{background:var(--green-primary);color:#0a0f1c;border-top-right-radius:4px}.markdown-content p{margin-bottom:8px}.markdown-content p:last-child{margin-bottom:0}.markdown-content strong{color:var(--green-light);font-weight:700}.chat-message--user .markdown-content strong{color:#000}.markdown-content ul,.markdown-content ol{margin-bottom:12px;margin-left:20px}.markdown-content li{margin-bottom:6px}.markdown-content code{font-family:var(--font-mono);color:var(--green-light);background:#ffffff1a;border-radius:4px;padding:2px 6px;font-size:.9em}.markdown-content h1,.markdown-content h2,.markdown-content h3{color:var(--green-light);margin:16px 0 8px;font-size:1.1em;font-weight:800}.markdown-content table{border-collapse:collapse;border-radius:var(--radius-md);background:#ffffff08;border:1px solid #ffffff1a;width:100%;margin:16px 0;font-size:13px;display:block;overflow:auto hidden}.markdown-content th{color:var(--green-light);text-align:left;white-space:nowrap;background:#00c85326;border-bottom:2px solid #00c8534d;padding:12px;font-weight:700}.markdown-content td{vertical-align:top;color:var(--text-secondary);border-bottom:1px solid #ffffff0d;min-width:100px;padding:12px}.markdown-content tr:nth-child(2n){background:#ffffff05}.markdown-content tr:last-child td{border-bottom:none}.markdown-content tr:hover td{color:var(--text-primary);background:#00c8530d}.chat-suggestions{padding:8px var(--space-md);scrollbar-width:none;gap:8px;display:flex;overflow-x:auto}.chat-suggestion{white-space:nowrap;background:var(--bg-secondary);border:var(--border-subtle);border-radius:var(--radius-xl);color:var(--text-secondary);transition:var(--transition-fast);padding:8px 16px;font-size:12px}.chat-suggestion:active{background:var(--green-primary);color:#000}.chat-input-area{padding:var(--space-md);background:var(--bg-primary);border-top:var(--border-subtle);gap:var(--space-sm);align-items:flex-end;display:flex}.chat-input{background:var(--bg-input);border:var(--border-subtle);border-radius:var(--radius-lg);color:var(--text-primary);resize:none;max-height:120px;transition:var(--transition-fast);flex:1;padding:12px 16px;font-size:15px}.chat-input:focus{border-color:var(--green-primary);outline:none}.chat-send-btn{border-radius:var(--radius-full);background:var(--green-primary);color:#0a0f1c;width:44px;height:44px;transition:var(--transition-fast);justify-content:center;align-items:center;font-size:18px;display:flex}.chat-send-btn:disabled{opacity:.3;filter:grayscale()}.chat-send-btn:active:not(:disabled){transform:scale(.9)}.chat-typing{gap:4px;padding:4px 0;display:flex}.chat-typing__dot{background:var(--text-muted);border-radius:50%;width:6px;height:6px;animation:1.4s ease-in-out infinite both bounce}.chat-typing__dot:first-child{animation-delay:-.32s}.chat-typing__dot:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}