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var(--spacing-xl);border:none;border-radius:var(--radius-sm);font-size:var(--text-base);font-weight:600;cursor:pointer;transition:all var(--transition-normal);text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm)}.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.btn-primary{background:linear-gradient(135deg,#10b981,#059669);color:#fff;box-shadow:0 4px 12px #10b9814d}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #10b98166}.btn-secondary{background:var(--tg-theme-secondary-bg-color);color:var(--tg-theme-text-color);border:2px solid var(--tg-theme-hint-color)}.btn-secondary:hover:not(:disabled){background:var(--tg-theme-bg-color);border-color:var(--tg-theme-link-color)}.btn-large{padding:var(--spacing-lg) var(--spacing-2xl);font-size:var(--text-lg);border-radius:var(--radius-lg)}.btn-small{padding:var(--spacing-sm) var(--spacing-md);font-size:var(--text-sm)}.btn-full{width:100%}.btn-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:var(--spacing-sm)}.btn-grid-4{grid-template-columns:repeat(4,1fr)}.btn-quality-1{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff}.btn-quality-2{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff}.btn-quality-3{background:linear-gradient(135deg,#10b981,#059669);color:#fff}.btn-quality-4{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff}.loading{display:flex;align-items:center;justify-content:center;padding:var(--spacing-2xl);color:var(--tg-theme-hint-color)}.error{color:#ef4444;text-align:center;padding:var(--spacing-lg);background:#ef44441a;border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-sm);margin:var(--spacing-md) 0}.empty-state{text-align:center;padding:var(--spacing-3xl) var(--spacing-lg);color:var(--tg-theme-hint-color)}.fixed-bottom{position:fixed;bottom:0;left:0;right:0;background:var(--tg-theme-bg-color);padding:var(--spacing-lg);box-shadow:0 -4px 12px #0000001a;z-index:var(--z-fixed)}@media (max-width: 640px){.container{padding:var(--spacing-sm)}.btn-grid-4{grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}.heading-1{font-size:var(--text-2xl)}.heading-2{font-size:var(--text-xl)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}.animate-fade-in{animation:fadeIn .3s ease-out}.animate-bounce{animation:bounce 2s ease-in-out infinite}.btn:focus-visible{outline:2px solid var(--tg-theme-link-color);outline-offset:2px}:root{--tg-theme-bg-color: var(--tg-theme-bg-color, #ffffff);--tg-theme-text-color: var(--tg-theme-text-color, #000000);--tg-theme-hint-color: var(--tg-theme-hint-color, #707579);--tg-theme-link-color: var(--tg-theme-link-color, #3390ec);--tg-theme-button-color: var(--tg-theme-button-color, #3390ec);--tg-theme-button-text-color: var(--tg-theme-button-text-color, #ffffff);--tg-theme-secondary-bg-color: var(--tg-theme-secondary-bg-color, #f1f1f1)}