.home{padding:20px 0}.welcome-section{text-align:center;margin-bottom:30px;padding:30px 20px;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:20px;color:#fff}.welcome-section h1{font-size:28px;margin-bottom:10px}.subtitle{font-size:18px;opacity:.9;margin-bottom:10px}.description{font-size:14px;opacity:.8;max-width:400px;margin:0 auto}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:15px;margin-bottom:30px}.feature-card{background:var(--card-bg);padding:20px;border-radius:15px;text-align:center;box-shadow:0 2px 10px var(--card-shadow);transition:transform .3s}.feature-card:hover{transform:translateY(-5px)}.feature-icon{font-size:40px;display:block;margin-bottom:10px}.feature-card h3{font-size:16px;margin-bottom:8px;color:var(--card-text)}.feature-card p{font-size:12px;color:var(--card-text-secondary)}.quick-start{background:var(--card-bg);padding:25px;border-radius:15px;margin-bottom:30px;box-shadow:0 2px 10px var(--card-shadow)}.quick-start h2{font-size:20px;margin-bottom:15px;color:var(--card-text)}.quick-actions{display:flex;gap:10px;flex-wrap:wrap}.action-btn{flex:1;min-width:140px;padding:15px 20px;border:none;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s}.action-btn.primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.action-btn.secondary{background:var(--border-color);color:var(--card-text)}.action-btn:hover{transform:scale(1.05)}.stats{display:flex;justify-content:space-around;background:var(--card-bg);padding:20px;border-radius:15px;box-shadow:0 2px 10px var(--card-shadow)}.stat-item{display:flex;flex-direction:column;align-items:center;text-align:center}.stat-value{font-size:28px;font-weight:700;color:#667eea;margin-bottom:5px}@media (max-width: 768px){.welcome-section h1{font-size:24px}.features{grid-template-columns:repeat(2,1fr)}.stat-value{font-size:24px}.stat-label{font-size:10px}}.alphabet{padding:20px 0}.alphabet h1{font-size:24px;margin-bottom:10px;color:var(--card-text)}.alphabet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:10px;margin-bottom:20px}.letter-card{background:var(--card-bg);border-radius:12px;padding:15px 10px;text-align:center;cursor:pointer;transition:all .3s;box-shadow:0 2px 8px var(--card-shadow)}.letter-card:hover{transform:translateY(-5px);box-shadow:0 4px 12px var(--card-shadow)}.letter-card.selected{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.letter{font-size:28px;font-weight:700;margin-bottom:5px}.letter-name{font-size:11px;opacity:.8}.letter-details{position:fixed;bottom:80px;left:20px;right:20px;background:var(--card-bg);border-radius:20px;padding:25px;box-shadow:0 -5px 20px var(--card-shadow);animation:slideUp .3s ease-out;z-index:50}@keyframes slideUp{0%{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}.close-btn{position:absolute;top:15px;right:15px;background:var(--border-color);border:none;width:30px;height:30px;border-radius:50%;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s;color:var(--card-text)}.close-btn:hover{background:#bdc3c7}.detail-content{text-align:center}.detail-letter{font-size:60px;font-weight:700;margin-bottom:10px;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.detail-content h3{font-size:22px;color:var(--card-text);margin-bottom:20px}.detail-row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border-color);margin-bottom:10px}.detail-row .label{color:var(--card-text-secondary);font-size:14px}.detail-row 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0}.sheet-close{position:absolute;top:12px;right:16px;width:32px;height:32px;border-radius:50%;border:none;background:#80808033;color:var(--card-text-secondary, #aaa);font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}.sheet-close:hover{background:#80808059}.sheet-header{text-align:center;padding:20px 20px 16px;border-bottom:1px solid var(--border-color, rgba(255,255,255,.08))}.sheet-greek{font-size:38px;font-weight:700;color:var(--card-text, #fff);margin-bottom:4px;display:inline-flex;align-items:center;gap:4px}.sheet-latin{font-size:16px;color:var(--card-text-secondary, #aaa);font-style:italic;margin-bottom:12px}.sheet-badges{display:flex;align-items:center;justify-content:center;gap:8px}.sheet-badges .word-level,.sheet-badges .word-pos{background:var(--badge-level-bg, rgba(102, 126, 234, .2));color:var(--badge-level-color, #667eea)}.sheet-badges .word-level.level-A1{background:#22c55e33;color:#22c55e}.sheet-badges 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h1{font-size:24px;margin-bottom:10px;color:var(--card-text)}.intro{color:var(--card-text-secondary);margin-bottom:25px;font-size:14px}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;margin-bottom:30px}.stat-card{background:var(--card-bg);border-radius:15px;padding:25px;text-align:center;box-shadow:0 2px 10px var(--card-shadow);transition:all .3s}.stat-card:hover{transform:translateY(-5px);box-shadow:0 4px 15px var(--card-shadow)}.stat-icon{font-size:36px;margin-bottom:10px}.stat-value{font-size:32px;font-weight:700;color:#667eea;margin-bottom:5px}.stat-label{font-size:12px;color:var(--card-text-secondary)}.achievements{background:var(--card-bg);border-radius:15px;padding:25px;margin-bottom:25px;box-shadow:0 2px 10px var(--card-shadow)}.achievements 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