:root {
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #f59e0b;
    --color-background: #0f172a;
    --color-surface: #1e293b;
    --color-surface-light: #334155;
    --color-text: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-border: #334155;
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    --border-radius: 0.75rem;
    --border-radius-sm: 0.5rem;
    --border-radius-lg: 1rem;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, var(--color-background) 0%, #1a1f3a 100%);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-md);
}

.logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo-icon {
    font-size: 2rem;
}

.built-with {
    color: var(--color-primary-light);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.built-with:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Hero */
.hero {
    text-align: center;
    padding: var(--spacing-xxl) 0 var(--spacing-xl);
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* API Key Section */
.api-key-section {
    padding: 0 0 var(--spacing-xl);
}

.api-key-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.api-key-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

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

.api-key-input-group {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.api-key-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-size: 1rem;
    font-family: 'Inter', monospace;
    transition: var(--transition);
}

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

.toggle-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-surface-light);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    cursor: pointer;
    font-size: 1.25rem;
    transition: var(--transition);
}

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

.api-key-hint {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.api-key-hint a {
    color: var(--color-primary-light);
    text-decoration: none;
    font-weight: 500;
}

.api-key-hint a:hover {
    text-decoration: underline;
}

/* Script Input */
.script-input-section {
    padding: 0 0 var(--spacing-xl);
}

.script-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.script-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.script-textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-size: 1rem;
    font-family: 'Courier New', monospace;
    line-height: 1.6;
    resize: vertical;
    min-height: 200px;
    transition: var(--transition);
}

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

/* Tools Section */
.tools-section {
    padding: 0 0 var(--spacing-xl);
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.tool-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

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

.tool-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.tool-description {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    flex: 1;
}

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

.theme-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-size: 0.875rem;
    transition: var(--transition);
}

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

.tool-btn {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.tool-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
}

.tool-btn:active {
    transform: translateY(0);
}

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

/* Output Section */
.output-section {
    padding: 0 0 var(--spacing-xl);
    animation: fadeIn 0.5s ease-in;
}

.output-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

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

.output-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
}

.output-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-surface-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-icon {
    font-size: 1rem;
}

.output-content {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    max-height: 600px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.8;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

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

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

.loading-text {
    color: var(--color-text);
    font-size: 1.125rem;
    font-weight: 500;
}

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

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

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

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

.footer-text {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.footer-links a {
    color: var(--color-primary-light);
    text-decoration: none;
    font-weight: 500;
}

.footer-links a:hover {
    text-decoration: underline;
}

.separator {
    margin: 0 var(--spacing-sm);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .logo-icon {
        font-size: 1.5rem;
    }
    
    .built-with {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .output-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .output-actions {
        width: 100%;
    }
    
    .action-btn {
        flex: 1;
    }
}

@media (max-width: 480px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .api-key-input-group {
        flex-direction: column;
    }
    
    .toggle-btn {
        width: 100%;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--color-surface-light);
    border-radius: 5px;
}

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