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

:root {
    --primary-color: #f97316;
    --primary-dark: #ea580c;
    --secondary-color: #3b82f6;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --sidebar-width: 280px;
    --header-height: 70px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background: var(--bg-light);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.75rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary-color);
}

.btn-primary {
    background: var(--primary-color);
    color: #ffffff !important;
    padding: 0.625rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none !important;
    font-weight: 700;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #ffffff !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
    text-decoration: none !important;
}

/* Main Wrapper */
.main-wrapper {
    display: flex;
    min-height: calc(100vh - var(--header-height) - 80px);
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-white);
    border-right: 1px solid var(--border-color);
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
}

.sidebar-content {
    padding: 2rem 0;
}

.sidebar-section {
    margin-bottom: 2rem;
}

.sidebar-section h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 700;
    padding: 0 1.5rem;
    margin-bottom: 0.75rem;
}

.sidebar-section ul {
    list-style: none;
}

.sidebar-section ul li a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.sidebar-section ul li a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.sidebar-section ul li a.active {
    background: rgba(249, 115, 22, 0.1);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.sidebar-section ul li a i {
    width: 20px;
    text-align: center;
}

/* Content */
.content {
    flex: 1;
    padding: 3rem;
    max-width: 900px;
}

.content h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
    color: var(--text-color);
}

.content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2rem 0 1rem;
    color: var(--text-color);
}

.content h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
    color: var(--text-color);
}

.content p {
    margin-bottom: 1.25rem;
    color: var(--text-muted);
    line-height: 1.75;
}

.content ul, .content ol {
    margin: 1rem 0 1.5rem 1.5rem;
    color: var(--text-muted);
}

.content li {
    margin-bottom: 0.5rem;
    line-height: 1.75;
}

.content a:not(.btn-primary) {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.content a:not(.btn-primary):hover {
    text-decoration: underline;
}

.content code {
    background: #1e293b;
    color: #e2e8f0;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.875em;
    font-family: 'Monaco', 'Courier New', monospace;
}

.content pre {
    background: #1e293b;
    border-radius: 0.5rem;
    padding: 1.5rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid #334155;
}

.content pre code {
    background: none;
    padding: 0;
    font-size: 0.875rem;
    line-height: 1.75;
}

/* Alert Boxes */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 0.5rem;
    margin: 1.5rem 0;
    border-left: 4px solid;
}

.alert-info {
    background: #dbeafe;
    border-color: #3b82f6;
    color: #1e40af;
}

.alert-success {
    background: #d1fae5;
    border-color: #10b981;
    color: #065f46;
}

.alert-warning {
    background: #fef3c7;
    border-color: #f59e0b;
    color: #92400e;
}

.alert-danger {
    background: #fee2e2;
    border-color: #ef4444;
    color: #991b1b;
}

.alert i {
    margin-right: 0.5rem;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: var(--bg-white);
    border-radius: 0.5rem;
    overflow: hidden;
}

thead {
    background: var(--bg-light);
}

th {
    text-align: left;
    padding: 1rem;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
}

tr:last-child td {
    border-bottom: none;
}

/* Cards */
.card {
    background: var(--bg-white);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* Steps */
.steps {
    counter-reset: step-counter;
    margin: 2rem 0;
}

.step {
    counter-increment: step-counter;
    position: relative;
    padding-left: 4rem;
    margin-bottom: 2rem;
}

.step::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.step h4 {
    margin-top: 0;
}

.step .btn-primary {
    margin-top: 1rem;
    display: inline-flex;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.feature-card {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.feature-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.feature-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card h4 {
    margin: 0.5rem 0;
}

.feature-card p {
    margin: 0;
    font-size: 0.875rem;
}

.feature-card .btn-primary {
    margin-top: 1rem;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
}

/* Footer */
.footer {
    background: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
}

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

.footer-right {
    display: flex;
    gap: 2rem;
}

.footer a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        width: 250px;
    }
    
    .content {
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        transition: left 0.3s;
        z-index: 99;
        width: 280px;
    }
    
    .sidebar.active {
        left: 0;
    }
    
    .content {
        padding: 1.5rem;
    }
    
    .content h1 {
        font-size: 2rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

/* Syntax Highlighting Overrides */
pre[class*="language-"] {
    margin: 1.5rem 0;
    border-radius: 0.5rem;
}

code[class*="language-"],
pre[class*="language-"] {
    font-size: 0.875rem;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

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

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

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}