* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4a90e2;
    --secondary-color: #2ecc71;
    --error-color: #e74c3c;
    --text-color: #2c3e50;
    --border-radius: 8px;
    --spacing: 1rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing);
}

header {
    text-align: center;
    margin-bottom: var(--spacing);
}

h1 {
    color: var(--text-color);
    margin-bottom: calc(var(--spacing) * 0.5);
}

.subtitle {
    color: #666;
    font-size: 1.1rem;
}

.upload-section {
    text-align: center;
    margin-bottom: var(--spacing);
}

.hidden {
    display: none;
}

.upload-button {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: calc(var(--spacing) * 2);
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

.upload-button:hover {
    background-color: #357abd;
    transform: translateY(-2px);
}

.upload-button i {
    font-size: 2rem;
    margin-bottom: var(--spacing);
}

.upload-button span {
    font-size: 1.2rem;
    margin-bottom: calc(var(--spacing) * 0.5);
}

.error {
    color: var(--error-color);
    margin-top: var(--spacing);
    padding: calc(var(--spacing) * 0.5);
    border-radius: var(--border-radius);
    background-color: rgba(231, 76, 60, 0.1);
}

.editor-section {
    background-color: white;
    padding: calc(var(--spacing) * 2);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing);
    margin-bottom: var(--spacing);
}

.aspect-ratio-container {
    flex: 1;
    min-width: 250px;
}

.aspect-ratio-select {
    width: 100%;
    padding: calc(var(--spacing) * 0.75);
    border: 2px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: white;
    cursor: pointer;
}

.custom-ratio {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 0.5);
    margin-top: var(--spacing);
}

.custom-ratio input {
    width: 80px;
    padding: calc(var(--spacing) * 0.5);
    border: 2px solid #ddd;
    border-radius: var(--border-radius);
}

.control-button {
    padding: calc(var(--spacing) * 0.75) var(--spacing);
    background-color: #95a5a6;
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.3s;
    display: inline-flex;
    align-items: center;
    gap: calc(var(--spacing) * 0.5);
}

.control-button:hover {
    background-color: #7f8c8d;
}

.image-container {
    position: relative;
    max-width: 100%;
    margin: calc(var(--spacing) * 2) 0;
    text-align: center;
    min-height: 300px;
}

.image-container img {
    max-width: 100%;
    max-height: 70vh;
    display: block;
    margin: 0 auto;
}

.preview-section {
    margin: calc(var(--spacing) * 2) 0;
    text-align: center;
}

.preview-section h3 {
    margin-bottom: calc(var(--spacing) * 0.5);
}

.preview-section canvas {
    max-width: 100%;
    max-height: 80vh;
    border: 2px solid #ddd;
    border-radius: var(--border-radius);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing);
    margin-top: calc(var(--spacing) * 2);
}

.preview-button {
    width: 100%;
    padding: var(--spacing);
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing) * 0.5);
}

.preview-button:hover {
    background-color: #357abd;
}

.download-options {
    display: flex;
    gap: var(--spacing);
    flex-wrap: wrap;
}

.download-button {
    flex: 1;
    min-width: 200px;
    padding: var(--spacing);
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing) * 0.5);
}

.download-button:hover {
    background-color: #27ae60;
}

.download-button:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
}

.affiliate-banner {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    padding: 1rem;
    margin: 1rem auto;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.2s ease-in-out;
    max-width: 600px;
    width: 90%;
}

.affiliate-banner:hover {
    transform: translateY(-2px);
}

.affiliate-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.affiliate-link i {
    font-size: 1.2em;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: calc(var(--spacing) * 0.25);
    }

    .controls {
        flex-direction: column;
    }

    .download-options {
        flex-direction: column;
    }

    .download-button {
        width: 100%;
    }
}