:root {
    --color-border: #e0e0e0;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 32px;
    margin-bottom: 8px;
    color: var(--color-primary);
}

.header p {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.resizer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

@media (max-width: 768px) {
    .resizer-content {
        grid-template-columns: 1fr;
    }
}

.card {
    background-color: var(--color-surface);
    border-radius: 12px;
    padding: 25px;
    border: 1px solid var(--color-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.card h2 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--color-text-primary);
}

.upload-area {
    border: 2px dashed var(--color-primary);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: rgba(33, 128, 168, 0.05);
}

.upload-area:hover {
    background-color: rgba(33, 128, 168, 0.1);
    border-color: var(--color-primary-hover);
}

.upload-area.dragover {
    background-color: rgba(33, 128, 168, 0.15);
    border-color: var(--color-primary-active);
}

.upload-area.has-image {
    border: 1px solid var(--color-border);
    padding: 0;
    background-color: transparent;
}

.upload-area.has-image #uploadText {
    display: none;
}

#uploadText {
    color: var(--color-text-secondary);
}

#uploadText p {
    margin: 8px 0;
}

#uploadText .icon {
    font-size: 32px;
    margin-bottom: 10px;
}

#imageInput {
    display: none;
}

.image-preview {
    width: 100%;
    max-height: 300px;
    border-radius: 8px;
    display: none;
}

.image-preview.show {
    display: block;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: 14px;
}

.radio-group {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.radio-option input[type="radio"] {
    cursor: pointer;
    width: 18px;
    height: 18px;
}

.radio-option label {
    margin: 0;
    cursor: pointer;
    font-weight: 500;
    color: var(--color-text-primary);
}

.input-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 10px;
}

@media (max-width: 600px) {
    .input-group {
        grid-template-columns: 1fr;
    }
}

input[type="number"],
input[type="range"],
select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    font-size: 14px;
    transition: border-color 0.2s;
}

input[type="number"]:focus,
input[type="range"]:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
}

input[type="range"] {
    padding: 0;
    height: 6px;
    cursor: pointer;
}

.range-value {
    display: inline-block;
    background-color: var(--color-primary);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    margin-top: 5px;
}

.dimension-info {
    background-color: rgba(33, 128, 168, 0.1);
    padding: 12px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: 15px;
}

.dimension-info strong {
    color: var(--color-text-primary);
}

.aspect-ratio-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.aspect-ratio-controls input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.aspect-ratio-controls label {
    margin: 0;
    cursor: pointer;
    font-size: 14px;
}

.button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
}

@media (max-width: 600px) {
    .button-group {
        grid-template-columns: 1fr;
    }
}

button {
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
}

.btn-primary:active {
    background-color: var(--color-primary-active);
}

.btn-primary:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: rgba(33, 128, 168, 0.05);
    border-color: var(--color-primary);
}

.output-section {
    grid-column: 1 / -1;
}

.output-preview {
    display: none;
    background-color: var(--color-surface);
    border-radius: 12px;
    padding: 25px;
    border: 1px solid var(--color-border);
    margin-top: 20px;
}

.output-preview.show {
    display: block;
}

.output-preview h3 {
    margin-bottom: 15px;
    font-size: 16px;
}

.preview-image {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.stat-item {
    background-color: rgba(33, 128, 168, 0.05);
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid var(--color-primary);
}

.stat-label {
    font-size: 12px;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
}

.file-info {
    background-color: rgba(39, 174, 96, 0.1);
    padding: 12px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: 15px;
}

.file-info strong {
    color: var(--color-success);
}

.download-btn {
    width: 100%;
    background-color: var(--color-success);
}

.download-btn:hover {
    background-color: #229954;
}

.error-message {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--color-error);
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 13px;
    display: none;
}

.error-message.show {
    display: block;
}

.success-message {
    background-color: rgba(39, 174, 96, 0.1);
    color: var(--color-success);
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 13px;
    display: none;
}

.success-message.show {
    display: block;
}

.hidden {
    display: none !important;
}

.file-size-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.size-box {
    padding: 12px;
    border-radius: 6px;
    text-align: center;
    font-size: 13px;
}

.size-box.original {
    background-color: rgba(243, 156, 18, 0.1);
    border: 1px solid rgba(243, 156, 18, 0.3);
}

.size-box.processed {
    background-color: rgba(39, 174, 96, 0.1);
    border: 1px solid rgba(39, 174, 96, 0.3);
}

.size-label {
    color: var(--color-text-secondary);
    font-size: 11px;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.size-value {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 5px;
}

.original .size-value {
    color: #f39c12;
}

.processed .size-value {
    color: var(--color-success);
}

.reduction-percentage {
    font-size: 12px;
    color: var(--color-success);
    font-weight: 600;
}

.spinner {
    border: 3px solid rgba(33, 128, 168, 0.2);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 8px;
    vertical-align: middle;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.processing {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--color-text-secondary);
    margin: 20px 0;
}