:root {
    --sql-primary: #2563eb;
    --sql-primary-dark: #1d4ed8;
    --sql-primary-light: #3b82f6;
    --sql-accent: #0ea5e9;
    --sql-surface: #ffffff;
    --sql-surface-muted: #f8fafc;
    --sql-border: #e2e8f0;
    --sql-border-light: #f1f5f9;
    --sql-text: #0f172a;
    --sql-text-muted: #64748b;
    --sql-text-light: #94a3b8;
    --sql-success: #22c55e;
    --sql-success-light: #4ade80;
    --sql-warning: #f59e0b;
    --sql-error: #ef4444;
    --sql-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --sql-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --sql-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --sql-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --sql-radius-sm: 0.5rem;
    --sql-radius-md: 0.75rem;
    --sql-radius-lg: 1rem;
    --sql-radius-xl: 1.5rem;
    
    --text-muted: var(--sql-text-muted);
}

/* Main Container */
.sql-generator-section {
    margin-bottom: 3rem;
}

.sql-generator-card {
    background: var(--sql-surface);
    border: 1px solid var(--sql-border);
    border-radius: var(--sql-radius-xl);
    box-shadow: var(--sql-shadow-lg);
    padding: 2rem;
    transition: box-shadow 0.3s ease;
}

.sql-generator-card:hover {
    box-shadow: var(--sql-shadow-xl);
}

/* Generator Container */
.generator-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 992px) {
    .generator-container {
        grid-template-columns: 1fr 1.5fr;
    }
}

/* Controls Section */
.generator-controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sql-text);
    margin-bottom: 0.25rem;
}

.label-icon {
    font-size: 1.125rem;
}

.control-select,
.control-input {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    color: var(--sql-text);
    background: var(--sql-surface);
    border: 2px solid var(--sql-border);
    border-radius: var(--sql-radius-md);
    transition: all 0.2s ease;
    
}

.control-select:focus,
.control-input:focus {
    outline: none;
    border-color: var(--sql-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.control-select:hover,
.control-input:hover {
    border-color: var(--sql-primary-light);
}

/* Generate Button */
.generate-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    background: linear-gradient(135deg, var(--sql-primary) 0%, var(--sql-primary-dark) 100%);
    border: none;
    border-radius: var(--sql-radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--sql-shadow-md);
    margin-top: 0.5rem;
}

.generate-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--sql-shadow-lg);
    background: linear-gradient(135deg, var(--sql-primary-light) 0%, var(--sql-primary) 100%);
}

.generate-button:active {
    transform: translateY(0);
}

.button-icon {
    font-size: 1.125rem;
}

/* Output Section */
.generator-output {
    display: flex;
    flex-direction: column;
    background: var(--sql-surface-muted);
    border: 1px solid var(--sql-border);
    border-radius: var(--sql-radius-lg);
    overflow: hidden;
}

.output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: var(--sql-surface);
    border-bottom: 1px solid var(--sql-border);
    flex-wrap: wrap;
    gap: 1rem;
}

.output-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--sql-text);
    margin: 0;
}

.output-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.action-button {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--sql-text-muted);
    background: var(--sql-surface);
    border: 1px solid var(--sql-border);
    border-radius: var(--sql-radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-button:hover {
    color: var(--sql-primary);
    border-color: var(--sql-primary);
    background: rgba(37, 99, 235, 0.05);
}

.action-button .button-icon {
    font-size: 1rem;
}

.copy-button:hover {
    color: var(--sql-success);
    border-color: var(--sql-success);
    background: rgba(34, 197, 94, 0.05);
}

.download-button:hover {
    color: var(--sql-primary);
    border-color: var(--sql-primary);
    background: rgba(37, 99, 235, 0.05);
}

.clear-button:hover {
    color: var(--sql-error);
    border-color: var(--sql-error);
    background: rgba(239, 68, 68, 0.05);
}

/* SQL Editor */
.sql-editor {
    width: 100%;
    height: 400px;
    min-height: 300px;
    border: none;
    
    font-size: 14px;
    line-height: 1.6;
}

@media (min-width: 768px) {
    .sql-editor {
        height: 500px;
    }
}

/* Copy Feedback */
.copy-feedback {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background: var(--sql-success);
    color: #ffffff;
    border-radius: var(--sql-radius-md);
    box-shadow: var(--sql-shadow-lg);
    font-weight: 500;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
    pointer-events: none;
}

.copy-feedback.show {
    opacity: 1;
    transform: translateY(0);
}

/* Content Section */
.content-section {
    margin-top: 3rem;
    padding: 2rem 0;
}

.content-block {
    background: var(--sql-surface);
    border: 1px solid var(--sql-border);
    border-radius: var(--sql-radius-lg);
    padding: 2rem;
    box-shadow: var(--sql-shadow-sm);
}

.content-block h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--sql-text);
    margin-bottom: 1rem;
    margin-top: 0;
}

.content-block h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--sql-text);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.content-block p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--sql-text-muted);
    margin-bottom: 1.5rem;
}

.content-block ul,
.content-block ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.content-block li {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--sql-text-muted);
    margin-bottom: 0.5rem;
}

/* Mobile Optimizations */
@media (max-width: 767px) {
    .sql-generator-card {
        padding: 1.5rem;
    }

    .generator-header {
        margin-bottom: 1.5rem;
    }

    .output-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .output-actions {
        width: 100%;
    }

    .action-button {
        flex: 1;
        justify-content: center;
    }

    .copy-feedback {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        text-align: center;
    }

    .content-block {
        padding: 1.5rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible styles */
.control-select:focus-visible,
.control-input:focus-visible,
.generate-button:focus-visible,
.action-button:focus-visible {
    outline: 2px solid var(--sql-primary);
    outline-offset: 2px;
}