/**
 * AiRAZ Food Photo Studio - Styling
 * RAZ Creative Studio Brand Theme
 */

:root {
    /* RAZ Brand Colors */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #141414;
    --color-bg-card: #1a1a1a;
    --color-bg-hover: #252525;
    --color-accent: #f59e0b;
    --color-accent-hover: #d97706;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    --color-border: #27272a;
    --color-success: #22c55e;
    --color-error: #ef4444;
    --color-warning: #eab308;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

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

body {
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* Header */
.header {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(180deg, var(--color-bg-secondary), var(--color-bg-primary));
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-accent), #fbbf24);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

/* Step Indicators */
.steps-indicator {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.step {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: var(--transition-normal);
}

.step.active {
    color: var(--color-accent);
}

.step.completed {
    color: var(--color-success);
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-bg-card);
    border: 2px solid currentColor;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.step.active .step-number {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg-primary);
}

/* Main Layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
}

@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* Panels */
.panel {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.panel-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.panel-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.panel-header .icon {
    font-size: 1.5rem;
}

.panel-body {
    padding: var(--spacing-lg);
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: var(--transition-normal);
    cursor: pointer;
    background: var(--color-bg-card);
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--color-accent);
    background: rgba(245, 158, 11, 0.05);
}

.upload-area .upload-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.7;
}

.upload-area h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.upload-area p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.upload-area input[type="file"] {
    display: none;
}

/* Image Preview */
.image-preview {
    margin-top: var(--spacing-lg);
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: none;
}

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

.image-preview img {
    width: 100%;
    height: auto;
    display: block;
}

.image-preview .remove-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.image-preview .remove-btn:hover {
    background: var(--color-error);
}

/* Theme Grid */
.theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-md);
    max-height: 400px;
    overflow-y: auto;
    padding-right: var(--spacing-sm);
}

.theme-card {
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
}

.theme-card:hover {
    border-color: var(--color-text-muted);
    transform: translateY(-2px);
}

.theme-card.selected {
    border-color: var(--color-accent);
    background: rgba(245, 158, 11, 0.1);
}

.theme-card .theme-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.theme-card .theme-name {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.theme-card .theme-desc {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    line-height: 1.3;
}

/* Control Panel */
.control-group {
    margin-bottom: var(--spacing-lg);
}

.control-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.control-group .hint {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

/* Prompt Editor */
.prompt-editor {
    width: 100%;
    min-height: 120px;
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    resize: vertical;
    transition: var(--transition-fast);
}

.prompt-editor:focus {
    outline: none;
    border-color: var(--color-accent);
}

/* Strength Slider */
.slider-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.slider {
    flex: 1;
    -webkit-appearance: none;
    height: 8px;
    background: var(--color-bg-card);
    border-radius: var(--radius-full);
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    background: var(--color-accent);
    cursor: pointer;
    transition: var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider-value {
    min-width: 50px;
    text-align: center;
    font-weight: 600;
    color: var(--color-accent);
}

/* Generate Button */
.generate-btn {
    width: 100%;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-accent), #d97706);
    color: var(--color-bg-primary);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.generate-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(245, 158, 11, 0.3);
}

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

/* Output Section */
.output-section {
    padding: var(--spacing-xl);
}

.output-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

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

.output-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.output-card .result-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    background: var(--color-bg-card);
}

.output-card .card-footer {
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.output-card .variation-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.download-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-success);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.download-btn:hover {
    background: #16a34a;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-lg);
    z-index: 1000;
}

.loading-overlay.show {
    display: flex;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--color-bg-card);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    color: var(--color-text-primary);
    font-size: 1.1rem;
}

.loading-progress {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Message Box */
.message-box {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 500;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: 1001;
}

.message-box.show {
    transform: translateY(0);
    opacity: 1;
}

.message-box.success {
    background: var(--color-success);
    color: white;
}

.message-box.error {
    background: var(--color-error);
    color: white;
}

/* Reference Upload (Optional) */
.reference-section {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.reference-upload {
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.reference-upload:hover {
    border-color: var(--color-text-muted);
}

.reference-preview {
    display: none;
    margin-top: var(--spacing-md);
}

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

.reference-preview img {
    max-width: 150px;
    border-radius: var(--radius-md);
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--color-border);
}

.footer a {
    color: var(--color-accent);
    text-decoration: none;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-card);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}