main{
margin-top: 40px;
} 
.container {
    max-width: 1100px;
    margin: 0 auto;
}
.btn-secondary {padding:15px 20px;border-radius:6px; background:var(--bg-color); border:1px solid var(--primary-color);color:var(--text-color);transition: all 0.3s ease;}
.btn-secondary:hover{
   background: var(--primary-color);
   color: #ffffff;
}

header {
    margin-top: 0.6rem;
    margin-bottom: 1.2rem;
    text-align: center;
}

header h1 {
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: var(--transition);
    text-align: center;
}


.converter {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: 1.3rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-title i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.drop-zone {
    border: 2px dashed var(--primary-color);
    border-radius: 16px;
    padding: 2rem 2rem;
    text-align: center;
    background: var(--gray-50);
    margin-bottom: 1.5rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.drop-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.6s;
}

.drop-zone:hover::before {
    left: 100%;
}

.drop-zone:hover {
    background: var(--surface-color);
    border-color: var(--primary-color);
    transform: scale(1.02);
}

.drop-zone.dragover {
    border-color: var(--primary-color);
    background: var(--surface-color);
    transform: scale(1.05);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 0;
    color: var(--primary-color);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.browse-btn {
    background: var(--primary-gradient);
    color: var(--navbar-text);
    border: none;
    padding: 0.875rem 2rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: 1rem;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    position: relative;
    overflow: hidden;
}

.browse-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.browse-btn:hover::before {
    left: 100%;
}

.browse-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

.browse-btn:active {
    transform: translateY(0);
}

#file-upload {
    display: none;
}

.file-info {
    margin-top: 1.5rem;
    padding: 1.25rem;
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    border-radius: 12px;
    display: none;
    color: var(--navbar-text);
    animation: slideInUp 0.4s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.file-details {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-weight: 500;
}

.setting-group {
    margin-bottom: 1.75rem;
}

.setting-label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-light);
    font-size: 1rem;
}

.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    gap: 0.75rem;
}

.checkbox-group input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.dimension-controls {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 1rem;
    margin-bottom: 1rem;
}

.dimension-input {
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--surface-color);
    color: var(--text-color);
}

.dimension-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: scale(1.02);
}

.dimension-unit {
    padding: 0.875rem;
    background: var(--gray-100);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    min-width: 60px;
    text-align: center;
    font-weight: 700;
    color: var(--gray-600);
}

.size-option {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.size-input {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    width: 100px;
    font-size: 0.95rem;
    transition: border-color 0.3s ease;
    background: var(--surface-color);
    color: var(--text-color);
}

.size-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.size-input:disabled {
    background-color: var(--gray-100);
    color: var(--gray-400);
    cursor: not-allowed;
}

.format-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(20px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.format-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.4rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    background: var(--surface-color);
    color: var(--text-color);
}

.format-option:hover {
    border-color: var(--primary-color);
    background: var(--gray-50);
}

.format-option input[type="radio"]:checked + label,
.format-option:has(input[type="radio"]:checked) {
    border-color: var(--primary-color);
    background: var(--gray-50);
    color: var(--primary-color);
    font-weight: 600;
}

.format-option input[type="radio"] {
    accent-color: var(--primary-color);
}

.ico-warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-left: 4px solid var(--warning-color);
    padding: 1rem;
    border-radius: 0 10px 10px 0;
    margin-top: 1rem;
    font-size: 0.9rem;
    display: none;
    color: #92400e;
    animation: slideInUp 0.4s ease-out;
}

.action-btn {
    width: 100%;
    background: var(--primary-gradient);
    color: var(--navbar-text);
    border: none;
    padding: 1.125rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.4);
    position: relative;
    overflow: hidden;
}

.action-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.6s;
}

.action-btn:hover:not(:disabled)::before {
    left: 100%;
}

.action-btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.5);
}

.action-btn:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.results-area {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    display: none;
    margin-top: 2rem;
    border: 1px solid var(--border-color);
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-title {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: var(--text-color);
    text-align: center;
    font-weight: 700;
}

.results-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.image-container {
    text-align: center;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.result-image {
    max-width: 100%;
    max-height: 300px;
    border-radius: 12px;
    margin: 1rem 0;
    box-shadow: var(--shadow-lg);
    object-fit: contain;
    transition: transform 0.3s ease;
}

.result-image:hover {
    transform: scale(1.05);
}

.image-title {
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
    font-size: 1.2rem;
}

.image-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 1rem 0;
}

.stat {
    text-align: center;
    padding: 0.75rem;
    background: var(--surface-color);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.stat-value {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.download-btn {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    color: var(--navbar-text);
    border: none;
    padding: 0.875rem 1.5rem;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    margin-top: 1rem;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.5);
}

.progress-area {
    margin: 2rem 0;
    text-align: center;
    display: none;
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1rem;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--primary-gradient);
    width: 0%;
    transition: width 0.4s ease;
    border-radius: 4px;
}

.progress-text {
    color: var(--gray-600);
    font-weight: 500;
}

.error-area {
    margin: 1.5rem 0;
    padding: 1rem;
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border-left: 4px solid var(--error-color);
    border-radius: 0 10px 10px 0;
    color: #991b1b;
    display: none;
    font-weight: 500;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.note {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    border-radius: 0 12px 12px 0;
    margin: 2rem 0;
    font-size: 0.95rem;
    color: var(--text-light);
}

@media (max-width: 768px) {
     main{
margin-top: 0px;
} 
    .container{
        padding: 1rem;
    }
    .results-area {
    padding: 0.6rem;
    }
    .image-container {
    padding: 1.5rem 0.6rem;
}
     #results-area .image-container:first-child {
        display: none !important;
    }
    .converter {
        grid-template-columns: 1fr;
    }

    .results-content {
        grid-template-columns: 1fr;
    }

    .dimension-controls {
        grid-template-columns: 1fr;
    }

    .format-options {
        grid-template-columns: 1fr 1fr;
    }

    header h1 {
        font-size: 1.5rem;
    }
    header p{
        font-size: 1rem;
    }
    .section-title {
    font-size: 1rem;
}

    .card {
        padding: 1.5rem;
    }
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: var(--navbar-text);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}