@import "https://fonts.googleapis.com/css2?family=Mukta:wght@400;500;600;700&display=swap";:root{--bg-primary:#f8fafc;--bg-surface:#fff;--text-main:#0f172a;--text-muted:#64748b;--border-color:#e2e8f0;--border-focus:#cbd5e1;--primary:#1e3a8a;--primary-hover:#1e40af;--teal-accent:#0f766e;--success-bg:#10b981;--success-hover:#059669;--success-text:#16a34a;--shadow-color:#0000001a;--overlay-bg:#0f172ab3;--glass-bg:#f8fafcd9}[data-theme=dark]{--bg-primary:#0f172a;--bg-surface:#1e293b;--text-main:#f8fafc;--text-muted:#94a3b8;--border-color:#334155;--border-focus:#475569;--primary:#2dd4bf;--primary-hover:#22a191;--teal-accent:#2dd4bf;--success-bg:#059669;--success-hover:#10b981;--success-text:#4ade80;--shadow-color:#0000004d;--overlay-bg:#020617d9;--glass-bg:#0f172ad9}*{box-sizing:border-box;margin:0;padding:0;font-family:system-ui,-apple-system,sans-serif}body{background-color:var(--bg-primary);color:var(--text-main);font-family:Mukta,sans-serif;transition:background-color .3s,color .3s}.container{max-width:1200px;margin:0 auto;padding:20px}.navbar-glass{z-index:100;background-color:var(--glass-bg);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);transition:background-color .3s,border-color .3s;position:sticky;top:0}.ebooks-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;padding:10px 0 30px;display:grid}.premium-card{background:var(--bg-surface);box-shadow:0 2px 8px var(--shadow-color);border:1px solid var(--border-color);border-radius:12px;flex-direction:column;transition:transform .2s,box-shadow .2s,background-color .3s;display:flex;overflow:hidden}.premium-card:active{transform:scale(.98)}.card-image-container{aspect-ratio:3/4;background-color:var(--bg-primary);border-bottom:1px solid var(--border-color);width:100%;position:relative;overflow:hidden}.card-cover{object-fit:fill;width:100%;height:100%;transition:transform .3s}.trust-badge{background:var(--bg-surface);color:var(--success-text);box-shadow:0 2px 4px var(--shadow-color);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border-radius:20px;align-items:center;gap:4px;padding:4px 8px;font-size:10px;font-weight:600;display:flex;position:absolute;top:8px;right:8px}.card-content{flex-direction:column;flex-grow:1;padding:12px;display:flex}.category-tag{text-transform:uppercase;color:var(--teal-accent);letter-spacing:.5px;margin-bottom:6px;font-size:10px;font-weight:700}.book-title{color:var(--text-main);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0 0 4px;font-size:15px;font-weight:700;line-height:1.3;display:-webkit-box;overflow:hidden}.meta-item{color:var(--text-muted);margin-bottom:8px;font-size:11px}.book-price{color:var(--teal-accent);margin-top:auto;margin-bottom:12px;font-size:16px;font-weight:700}.btn{cursor:pointer;border:none;border-radius:6px;padding:10px 14px;font-weight:600;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.card-actions{flex-direction:column;gap:12px;display:flex}.card-actions .btn{border-radius:8px;justify-content:center;align-items:center;gap:8px;width:100%;height:38px;font-size:14px;display:flex}.btn-success{background-color:var(--success-bg);color:#fff}.btn-success:hover{background-color:var(--success-hover)}.shadow-btn{box-shadow:0 4px 14px #0f766e63}.modal-overlay,.gateway-overlay{background-color:var(--overlay-bg);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal-content{background:var(--bg-surface);width:100%;max-width:450px;box-shadow:0 20px 25px -5px var(--shadow-color);border-radius:12px;animation:.3s ease-out slideUp;overflow:hidden}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.modal-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:20px;display:flex}.modal-body{padding:20px}.order-summary{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:8px;gap:15px;margin-bottom:20px;padding:12px;display:flex}.summary-img{object-fit:cover;border-radius:4px;width:60px;height:85px}.form-group{margin-bottom:16px}.form-group label{color:var(--text-main);margin-bottom:6px;font-size:14px;font-weight:600;display:block}.input-field{background-color:var(--bg-surface);width:100%;color:var(--text-main);border:1px solid var(--border-focus);border-radius:6px;padding:10px 12px;font-size:16px}.input-field:focus{border-color:var(--primary);outline:none}.close-btn{cursor:pointer;color:var(--text-muted);background:0 0;border:none}.category-filter-container{white-space:nowrap;-webkit-overflow-scrolling:touch;gap:10px;margin-bottom:10px;padding:10px 4px 20px;display:flex;overflow-x:auto}.category-filter-container::-webkit-scrollbar{display:none}.category-filter-container{-ms-overflow-style:none;scrollbar-width:none}.chip{background-color:var(--bg-surface);color:var(--text-muted);border:1px solid var(--border-color);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:20px;padding:8px 16px;font-size:14px;font-weight:500;transition:all .2s}.chip:hover{border-color:var(--border-focus);color:var(--text-main)}.chip.active{background-color:var(--teal-accent);color:#fff;border-color:var(--teal-accent);box-shadow:0 4px 12px #0f766e40}