/* ============================================
   SQL для новачків - Стилі дашборду
   ============================================ */

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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #8b5cf6;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --text-dark: #2d3748;
    --text-light: #718096;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --danger-color: #ef4444;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f2f5;
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 60px 20px;
    text-align: center;
    margin-bottom: 40px;
    border-radius: 0 0 10px 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.header .subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ============================================
   TABS NAVIGATION
   ============================================ */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 40px;
    background: white;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    flex-wrap: wrap;
}

.tab-button {
    padding: 10px 20px;
    border: 2px solid transparent;
    background: var(--bg-light);
    color: var(--text-dark);
    cursor: pointer;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.tab-button:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
}

.tab-button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* ============================================
   CONTENT SECTIONS
   ============================================ */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

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

.tab-content h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 10px;
}

/* ============================================
   COMMAND CARDS
   ============================================ */
.commands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.command-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.command-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.command-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    gap: 10px;
}

.command-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    background: var(--bg-light);
    padding: 5px 10px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    white-space: nowrap;
}

.badge.basic {
    background: #dbeafe;
    color: #0c4a6e;
}

.badge.join {
    background: #dcfce7;
    color: #166534;
}

.badge.aggr {
    background: #fae8ff;
    color: #6b21a8;
}

.badge.adv {
    background: #fef3c7;
    color: #92400e;
}

.badge.danger {
    background: #fee2e2;
    color: #991b1b;
}

.description {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 12px;
}

.usage {
    background: var(--bg-light);
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 12px;
    border-left: 3px solid var(--accent-color);
}

.usage strong {
    display: block;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.usage pre {
    font-size: 0.85rem;
    overflow-x: auto;
}

.usage code {
    font-family: 'Courier New', monospace;
    color: #2563eb;
    background: white;
    padding: 8px;
    display: block;
    border-radius: 4px;
    line-height: 1.4;
}

.explanation {
    background: #f0fdf4;
    padding: 12px;
    border-radius: 6px;
    border-left: 3px solid var(--success-color);
}

.explanation strong {
    color: var(--text-dark);
    display: block;
    margin-bottom: 6px;
}

.explanation p {
    font-size: 0.9rem;
    color: var(--text-dark);
}

.explanation code {
    background: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    color: #2563eb;
}

/* ============================================
   EXAMPLE CARDS
   ============================================ */
.example-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 20px;
}

.example-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border-top: 4px solid var(--accent-color);
}

.example-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.example-card h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.example-card pre {
    background: var(--bg-light);
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
    margin-bottom: 12px;
    border-left: 3px solid var(--info-color);
}

.example-card code {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: #2563eb;
    line-height: 1.5;
}

.example-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    background: #fffacd;
    padding: 10px;
    border-radius: 4px;
    border-left: 3px solid var(--warning-color);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--secondary-color);
    color: white;
    text-align: center;
    padding: 30px 20px;
    margin-top: 60px;
    border-radius: 8px 8px 0 0;
}

.footer p {
    font-size: 1rem;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

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

    .example-cards {
        grid-template-columns: 1fr;
    }

    .tabs {
        flex-direction: column;
    }

    .tab-button {
        width: 100%;
        text-align: left;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.highlight {
    background: #fffacd;
    padding: 20px;
    border-radius: 6px;
    border-left: 4px solid var(--warning-color);
    margin-bottom: 20px;
}