/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #3b82f6;
    --accent-color: #60a5fa;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --radius-sm: 6px;
    --radius-md: 8px;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    margin: 0;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    text-align: center;
    padding: var(--spacing-lg) 0;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Workspace Layout */
.workspace {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

/* Controls Panel */
.controls-panel {
    background-color: var(--surface-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Section Styles */
section {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-lg);
}

section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

section h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.05);
}

.upload-area input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-prompt {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.upload-prompt span {
    color: var(--text-primary);
    font-weight: 500;
}

.upload-prompt small {
    color: var(--text-secondary);
}

/* Uploaded Images Grid */
.uploaded-images {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.uploaded-image-container {
    position: relative;
    aspect-ratio: 16/9;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.uploaded-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.delete-image {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 14px;
    opacity: 0;
    transition: all 0.2s ease;
}

.uploaded-image-container:hover .delete-image {
    opacity: 1;
}

/* Text Controls */
.text-inputs {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.input-group label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.input-group input[type="text"] {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.input-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Range and Select Controls */
.text-controls {
    margin-top: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.range-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

input[type="range"] {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    background: var(--border-color);
    border-radius: 2px;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}

select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    background-color: var(--surface-color);
    cursor: pointer;
}

/* Buttons */
.btn {
    padding: 0.75rem 1rem;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.control-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.layout-btn {
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.layout-btn:hover {
    background-color: #f1f5f9;
}

.color-btn {
    background: linear-gradient(45deg, #3b82f6, #60a5fa);
    color: white;
    border: none;
}

.color-btn:hover {
    opacity: 0.9;
}

.action-buttons {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

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

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

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

.btn.secondary:hover:not(:disabled) {
    background-color: var(--background-color);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Preview Panel */
.preview-panel {
    background-color: var(--surface-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.canvas-container {
    margin-top: var(--spacing-md);
    background-color: #1a1a1a;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

canvas {
    width: 100%;
    height: auto;
    display: block;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .workspace {
        grid-template-columns: 300px 1fr;
    }
}

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

    .controls-panel {
        order: 2;
    }

    .preview-panel {
        order: 1;
    }
}

/* Footer Styles */
.footer {
    width: 100%;
    padding: 1rem;
    background-color: #f8f9fa;
    border-top: 1px solid #e9ecef;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.copyright {
    font-size: 0.875rem;
    color: #6c757d;
    margin-bottom: 0.5rem;
}

.privacy-notice {
    font-size: 0.75rem;
    color: #868e96;
    margin: 0;
}