@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--bg-color:#0f172a;--text-color:#f8fafc;--primary-color:#3b82f6;--primary-hover:#2563eb;--surface-color:#1e293b;--border-color:#334155;--accent-color:#8b5cf6}body{background-color:var(--bg-color);color:var(--text-color);flex-direction:column;min-height:100vh;margin:0;padding:0;font-family:Inter,system-ui,-apple-system,sans-serif;display:flex}*{box-sizing:border-box}.app-container{width:100%;max-width:900px;margin:0 auto;padding:3rem 1.5rem}.header{text-align:center;margin-bottom:3rem;animation:.8s ease-out fadeInDown}.header h1{background:linear-gradient(135deg, var(--primary-color), var(--accent-color));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin:0;font-size:3rem;font-weight:700}.header p{color:#94a3b8;margin-top:.5rem;font-size:1.125rem}.upload-area{background:var(--surface-color);border:2px dashed var(--border-color);text-align:center;cursor:pointer;border-radius:1rem;padding:3rem 2rem;transition:all .3s;animation:.8s ease-out .2s both fadeInUp;position:relative;overflow:hidden}.upload-area:hover,.upload-area.drag-active{border-color:var(--primary-color);background:#3b82f60d;box-shadow:0 0 20px #3b82f61a}.upload-area input[type=file]{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;top:0;left:0}.upload-icon{width:48px;height:48px;color:var(--primary-color);margin-bottom:1rem}.upload-text{margin-bottom:.5rem;font-size:1.25rem;font-weight:500}.upload-subtext{color:#64748b;font-size:.875rem}.preview-container{margin-top:2rem;animation:.5s ease-out fadeIn}.preview-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem;margin-bottom:2rem;display:grid}.preview-item{aspect-ratio:1;background:var(--surface-color);border:1px solid var(--border-color);border-radius:.75rem;transition:transform .2s;position:relative;overflow:hidden;box-shadow:0 4px 6px -1px #0000001a}.preview-item:hover{transform:scale(1.05)}.preview-item img{object-fit:cover;width:100%;height:100%}.remove-btn{color:#fff;cursor:pointer;background:#0f172acc;border:none;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;transition:background .2s;display:flex;position:absolute;top:.5rem;right:.5rem}.remove-btn:hover{background:#ef4444}.action-container{justify-content:center;margin-top:2rem;display:flex}.btn-convert{background:linear-gradient(135deg, var(--primary-color), var(--accent-color));color:#fff;cursor:pointer;border:none;border-radius:9999px;align-items:center;gap:.5rem;padding:1rem 2rem;font-size:1.125rem;font-weight:600;transition:all .3s;display:flex;box-shadow:0 10px 15px -3px #3b82f64d}.btn-convert:hover{transform:translateY(-2px);box-shadow:0 20px 25px -5px #3b82f666}.btn-convert:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}.spinner{border:3px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:20px;height:20px;animation:1s ease-in-out infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}