/**
 * Image Tools Suite - Shared Styles
 * toolsfordjs.com
 */

/* ============================================
   CSS Variables / Theme
   ============================================ */
:root {
    /* Colors - Dark DJ Theme */
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-tertiary: #1a1a1a;
    --bg-card: #1a1a1a;
    --bg-card-hover: #252525;

    /* Accent Colors */
    --accent-primary: #1255DD;
    --accent-primary-hover: #0e44b1;
    --accent-secondary: #00d4ff;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #bbbbbb;
    --text-muted: #666666;

    /* Border Colors */
    --border-color: #2a2a2a;
    --border-color-light: #333333;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);

    /* 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: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-primary-hover);
}

/* ============================================
   Layout
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding: var(--spacing-2xl) 0;
}

/* ============================================
   Header
   ============================================ */
.site-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

/* ============================================
   Tool Cards Grid (Landing Page)
   ============================================ */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.tool-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    cursor: pointer;
    text-decoration: none;
    display: block;
}

.tool-card:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.tool-card.coming-soon {
    opacity: 0.6;
    cursor: default;
}

.tool-card.coming-soon:hover {
    transform: none;
    border-color: var(--border-color);
    box-shadow: none;
}

.tool-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

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

.tool-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0;
}

.tool-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-top: var(--spacing-md);
}

.tool-badge.available {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--accent-success);
}

.tool-badge.coming-soon {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--accent-warning);
}

/* ============================================
   Upload Dropzone
   ============================================ */
.upload-zone {
    border: 2px dashed var(--border-color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
    background-color: var(--bg-secondary);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent-primary);
    background-color: rgba(18, 85, 221, 0.05);
}

.upload-zone-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.upload-zone h3 {
    margin-bottom: var(--spacing-sm);
}

.upload-zone p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.upload-btn {
    display: inline-block;
    margin-top: var(--spacing-md);
}

/* ============================================
   Preview Containers
   ============================================ */
.preview-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 900px) {
    .preview-container.side-by-side {
        grid-template-columns: 1fr 1fr;
    }
}

.preview-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.preview-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.preview-header h4 {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.preview-dimensions {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.preview-body {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    background-color: var(--bg-tertiary);
    background-image:
        linear-gradient(45deg, #222 25%, transparent 25%),
        linear-gradient(-45deg, #222 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #222 75%),
        linear-gradient(-45deg, transparent 75%, #222 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
}

.preview-body img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    box-shadow: var(--shadow-lg);
}

/* ============================================
   Control Panel
   ============================================ */
.control-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.control-section {
    margin-bottom: var(--spacing-lg);
}

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

.control-section-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Form Controls
   ============================================ */
.input-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.input-group label {
    min-width: 60px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.input-group input[type="number"],
.input-group input[type="text"] {
    flex: 1;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: border-color var(--transition-fast);
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.input-group .unit {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
}

.checkbox-group label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
}

/* Range Slider */
.range-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

.range-header label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.range-value {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent-primary);
    font-weight: 600;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

.btn-primary {
    background-color: var(--accent-primary);
    color: #ffffff;
}

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

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

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

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

.btn-success:hover:not(:disabled) {
    background-color: #0da06f;
}

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

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

/* Button Groups */
.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.preset-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.preset-btn:hover {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

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

/* ============================================
   Action Bar
   ============================================ */
.action-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.action-bar-left {
    display: flex;
    gap: var(--spacing-sm);
}

.action-bar-right {
    display: flex;
    gap: var(--spacing-sm);
    margin-left: auto;
}

/* ============================================
   File Info Display
   ============================================ */
.file-info {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.file-info-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.file-info-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.file-info-value {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* ============================================
   Preset Size Cards
   ============================================ */
.preset-sizes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.preset-size-card {
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.preset-size-card:hover {
    border-color: var(--accent-primary);
    background-color: var(--bg-card-hover);
}

.preset-size-card.active {
    border-color: var(--accent-primary);
    background-color: rgba(18, 85, 221, 0.1);
}

.preset-size-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.preset-size-dims {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   Aspect Ratio Lock Button
   ============================================ */
.aspect-lock-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.2rem;
}

.aspect-lock-btn:hover {
    border-color: var(--accent-primary);
}

.aspect-lock-btn.locked {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    margin-top: auto;
}

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

.footer-text {
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

.footer-links a {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-links a:hover {
    color: var(--text-primary);
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Tool-specific: Hidden States
   ============================================ */
.hidden {
    display: none !important;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .main-content {
        padding: var(--spacing-lg) 0;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .preview-body {
        min-height: 200px;
    }

    .preview-body img {
        max-height: 250px;
    }

    .control-panel {
        padding: var(--spacing-md);
    }

    .action-bar {
        flex-direction: column;
    }

    .action-bar-left,
    .action-bar-right {
        width: 100%;
        justify-content: center;
    }

    .btn-group {
        justify-content: center;
    }

    .file-info {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .preset-sizes {
        grid-template-columns: repeat(2, 1fr);
    }

    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .nav-links {
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .preset-sizes {
        grid-template-columns: 1fr;
    }

    .input-group {
        flex-direction: column;
        align-items: stretch;
    }

    .input-group label {
        min-width: auto;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.processing {
    animation: pulse 1.5s infinite;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-muted);
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}