/* Odith - Instinct-inspired Typography & Styling */

/* Font Imports */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Root Variables */
:root {
    /* Colors */
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #141414;
    --text-primary: #FFFFFF;
    --text-secondary: #CCCCCC;
    --text-muted: #888888;
    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    --accent: #FFFFFF;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', system-ui, sans-serif;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* Typography Scale */
    --text-xs: 11px;
    --text-sm: 13px;
    --text-base: 14px;
    --text-lg: 16px;
    --text-xl: 18px;
    --text-2xl: 24px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    
    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    font-size: var(--text-base);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Top Bar */
.top-bar {
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    background: var(--bg-primary);
    z-index: 100;
    backdrop-filter: blur(10px);
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: var(--text-2xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.logo-accent {
    font-size: var(--text-lg);
    color: var(--text-muted);
    margin-left: 2px;
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: color var(--transition-base);
}

.nav-link:hover {
    color: var(--text-primary);
}

/* Main Content */
.main-content {
    padding: var(--spacing-xl) 0;
    min-height: calc(100vh - 100px);
}

.app-grid {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

/* Panels */
.control-panel,
.export-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.panel-section {
    margin-bottom: var(--spacing-xl);
}

.panel-section:last-child {
    margin-bottom: 0;
}

.panel-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Controls */
.control-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.control-select:hover {
    border-color: var(--border-hover);
}

.control-select:focus {
    outline: none;
    border-color: var(--accent);
}

.control-group {
    margin-bottom: var(--spacing-md);
}

.control-label {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.control-slider {
    width: 100%;
    height: 4px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    outline: none;
    cursor: pointer;
    -webkit-appearance: none;
}

.control-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-base);
}

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

.control-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--text-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-base);
}

.control-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
}

/* Checkbox */
.checkbox-group {
    margin-bottom: var(--spacing-sm);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--text-primary);
}

.checkbox-label span {
    user-select: none;
}

/* Preset Chips */
.preset-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.chip {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.chip:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.chip:active,
.chip.active {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

/* Canvas Section */
.canvas-section {
    min-height: 600px;
    position: relative;
}

/* Upload Area */
.upload-area {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.upload-area:hover {
    border-color: var(--border-hover);
    background: var(--bg-tertiary);
}

.upload-area.drag-over {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.05);
}

.upload-content {
    text-align: center;
    padding: var(--spacing-xl);
}

.upload-icon {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.upload-title {
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.upload-text {
    font-size: var(--text-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.file-input {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-info {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: var(--spacing-md);
}

/* Canvas Container */
.canvas-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.canvas-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.icon-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--text-sm);
    padding: 0;
}

.icon-btn:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.icon-btn.active {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.fps-indicator {
    margin-left: auto;
    font-size: var(--text-xs);
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.canvas-wrapper {
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
}

.preview-canvas {
    max-width: 100%;
    max-height: 70vh;
    display: block;
    image-rendering: pixelated;
}

/* Right Column Layout */
.right-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}


/* Custom Palette */
.custom-palette {
    margin-top: var(--spacing-md);
}

.palette-textarea {
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: var(--text-xs);
    resize: vertical;
    margin-bottom: var(--spacing-sm);
}

.palette-textarea:focus {
    outline: none;
    border-color: var(--accent);
}

/* Image Info */
.info-grid {
    display: grid;
    gap: var(--spacing-sm);
}

.info-item {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--border-color);
}

.info-item:last-child {
    border-bottom: none;
}

.info-label {
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-value {
    color: var(--text-primary);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

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

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

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

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

.btn-primary:disabled,
.btn-secondary:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.export-buttons {
    display: grid;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.export-info {
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.info-text {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 90%;
    position: relative;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    transition: color var(--transition-base);
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.modal-body p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.modal-footer {
    color: var(--text-muted);
    font-size: var(--text-sm);
    margin-top: var(--spacing-lg);
    margin-bottom: 0;
}

.modal-link {
    color: var(--text-primary);
    text-decoration: underline;
    transition: opacity var(--transition-base);
}

.modal-link:hover {
    opacity: 0.7;
}

/* Footer */
.site-footer {
    margin-top: var(--spacing-xxl);
    padding: var(--spacing-xxl) 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.footer-image {
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    transition: all var(--transition-base);
}

.footer-image:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

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

.footer-info {
    padding: var(--spacing-lg);
}

.footer-text {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.footer-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.footer-link {
    color: var(--text-primary);
    text-decoration: underline;
    transition: opacity var(--transition-base);
}

.footer-link:hover {
    opacity: 0.7;
}

.footer-subtext {
    font-size: var(--text-sm);
    color: var(--text-muted);
    line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .app-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .control-panel,
    .export-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 16px;
        --spacing-xl: 24px;
        --spacing-xxl: 32px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .top-bar {
        padding: var(--spacing-md) 0;
    }
    
    .main-content {
        padding: var(--spacing-md) 0;
    }
    
    .logo {
        font-size: var(--text-xl);
    }
    
    .nav {
        gap: var(--spacing-md);
    }
    
    .upload-area {
        min-height: 400px;
    }
    
    .canvas-wrapper {
        min-height: 400px;
        padding: var(--spacing-md);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-image {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .footer-info {
        text-align: center;
    }
}

/* Focus Styles - Accessibility */
button:focus-visible,
select:focus-visible,
input:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--text-primary);
    color: var(--bg-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}