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

:root {
    /* Color Palette */
    --primary-color: #6366f1;
    --primary-hover: #5855eb;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    
    /* Neutral Colors */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Text Colors */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-500);
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    
    /* 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: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    overflow-x: hidden;
}

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

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

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.875rem;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    min-height: 40px;
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn.full-width {
    width: 100%;
}

/* Header Styles */
.app-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.app-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0;
}

.logo {
    font-size: 2rem;
}

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

/* Main Content */
.main-content {
    min-height: calc(100vh - 80px);
}

/* Welcome Section */
.welcome-section {
    padding: var(--spacing-2xl) 0;
}

.welcome-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.welcome-content h2 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-content > p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-2xl);
}

.quick-actions {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin-bottom: var(--spacing-2xl);
}

.upload-area {
    background: var(--bg-primary);
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: var(--gray-50);
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
    transform: scale(1.02);
}

.upload-content {
    text-align: center;
}

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

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

.upload-formats {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.divider {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--gray-200);
    border-radius: 50%;
    font-weight: 600;
    color: var(--text-muted);
}

.template-preview h3 {
    margin-bottom: var(--spacing-lg);
}

.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.template-item {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.template-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.template-item .template-preview {
    width: 100%;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.template-item .template-preview-text {
    color: white;
    font-size: 0.7rem;
    font-weight: bold;
    text-align: center;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
    padding: var(--spacing-xs);
    line-height: 1.2;
}

.template-item .template-name {
    padding: var(--spacing-sm);
    font-size: 0.75rem;
    text-align: center;
    font-weight: 500;
}

/* Recent Memes */
.recent-memes {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--gray-200);
}

.recent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.recent-item {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.recent-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Editor Section */
.editor-section {
    padding: 0;
    background: var(--bg-primary);
}

.editor-container {
    height: calc(100vh - 80px);
    display: flex;
    flex-direction: column;
}

/* Editor Toolbar */
.editor-toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--gray-200);
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.toolbar-group.ml-auto {
    margin-left: auto;
}

.tool-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--gray-300);
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.tool-btn:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

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

#zoom-level {
    font-size: 0.875rem;
    font-weight: 500;
    min-width: 50px;
    text-align: center;
}

/* Editor Main Area */
.editor-main {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.canvas-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: var(--gray-100);
    position: relative;
    overflow: auto;
}

#meme-canvas {
    max-width: 100%;
    max-height: 100%;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: white;
    box-shadow: var(--shadow-lg);
}

.canvas-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

/* Text Controls Panel */
.text-controls-panel {
    width: 320px;
    background: var(--bg-primary);
    border-left: 1px solid var(--gray-200);
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.text-controls-panel h3 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--gray-200);
}

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

.control-row {
    display: flex;
    gap: var(--spacing-md);
}

.control-row .control-group {
    flex: 1;
}

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

.control-group input,
.control-group select,
.control-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.control-group input:focus,
.control-group select:focus,
.control-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.control-group textarea {
    min-height: 80px;
    resize: vertical;
}

.control-group input[type="range"] {
    margin-right: var(--spacing-sm);
}

.control-group input[type="color"] {
    height: 40px;
    padding: 2px;
}

.alignment-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.align-btn {
    flex: 1;
    padding: var(--spacing-sm);
    border: 1px solid var(--gray-300);
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.align-btn:hover {
    background: var(--gray-50);
}

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

/* Template Section */
.template-section {
    padding: var(--spacing-2xl) 0;
}

.template-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

.template-search {
    display: flex;
    gap: var(--spacing-sm);
}

.template-search input {
    width: 300px;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
}

.template-categories {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.category-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--gray-300);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 500;
}

.category-btn:hover {
    background: var(--gray-50);
}

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

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.template-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.template-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.template-card .template-preview {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    position: relative;
    overflow: hidden;
}

.template-card .template-preview-text {
    color: white;
    font-size: 1.1rem;
    font-weight: bold;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    padding: var(--spacing-md);
    line-height: 1.3;
}

.template-card-content {
    padding: var(--spacing-md);
}

.template-card h4 {
    margin-bottom: var(--spacing-xs);
}

.template-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
    margin-bottom: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    color: var(--text-muted);
}

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

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

.export-preview {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

#export-preview-canvas {
    max-width: 100%;
    max-height: 300px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
}

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

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

.option-group label {
    min-width: 80px;
    font-weight: 500;
}

.option-group select,
.option-group input {
    flex: 1;
    padding: var(--spacing-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
}

.export-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(2px);
}

.loading-content {
    text-align: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .text-controls-panel {
        width: 280px;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .divider {
        display: none;
    }
}

@media (max-width: 768px) {
    .app-header .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .app-nav {
        justify-content: center;
        width: 100%;
    }
    
    .welcome-content h2 {
        font-size: 2rem;
    }
    
    .editor-main {
        flex-direction: column;
    }
    
    .text-controls-panel {
        width: 100%;
        max-height: 300px;
        border-left: none;
        border-top: 1px solid var(--gray-200);
    }
    
    .template-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: stretch;
    }
    
    .template-search input {
        width: 100%;
    }
    
    .templates-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .export-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .welcome-section {
        padding: var(--spacing-lg) 0;
    }
    
    .upload-area {
        padding: var(--spacing-lg);
    }
    
    .template-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .templates-grid {
        grid-template-columns: 1fr;
    }
    
    .control-row {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

.slide-up {
    animation: slideUp 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --gray-300: #000000;
        --gray-400: #000000;
        --text-secondary: #000000;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}