:root {
    --primary: #4f46e5;
    --primary-light: #eef2ff;
    --primary-dark: #3730a3;
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --info: #3b82f6;
    --info-light: #dbeafe;
    --text-main: #111827;
    --text-muted: #4b5563;
    --text-light: #9ca3af;
    --bg-main: #ffffff;
    --bg-sidebar: #f9fafb;
    --bg-accent: #f3f4f6;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.8;
    color: var(--text-main);
    background-color: var(--bg-main);
    display: flex;
    min-height: 100vh;
    font-size: 18px;
}

/* Layout */
.sidebar {
    width: 320px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    padding: 2.5rem 1.5rem;
    height: 100vh;
    position: fixed;
    overflow-y: auto;
    z-index: 50;
}

.main-container {
    margin-left: 320px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.main-content {
    padding: 4rem 6rem;
    max-width: 1000px;
    width: 100%;
    margin: 0 auto;
}

/* Search Bar */
.search-container {
    margin-bottom: 2rem;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    transition: all 0.2s;
    background: white;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.search-icon {
    position: absolute;
    left: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    pointer-events: none;
}

/* Typography */
h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 2rem;
    color: var(--text-main);
    letter-spacing: -0.025em;
    line-height: 1.2;
}

h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-top: 4rem;
    margin-bottom: 1.5rem;
    color: var(--text-main);
    border-bottom: 2px solid var(--border-light);
    padding-bottom: 0.75rem;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

p {
    margin-bottom: 1.75rem;
    font-size: 1.125rem;
    color: var(--text-muted);
}

ul, ol {
    margin-bottom: 1.5rem;
    margin-left: 1.5rem;
}

li {
    margin-bottom: 0.75rem;
    font-size: 1.125rem;
    color: var(--text-muted);
}

strong {
    color: var(--text-main);
    font-weight: 600;
}

/* Sidebar Elements */
.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 2.5rem;
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 0.5rem;
}

.logo::before {
    content: '';
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    background-color: var(--primary);
    border-radius: 0.25rem;
}

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

.nav-section h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-light);
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
    font-weight: 700;
}

.nav-links {
    list-style: none;
    margin: 0;
}

.nav-links li {
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.95rem;
    display: block;
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    font-weight: 500;
}

.nav-links a:hover {
    background-color: var(--primary-light);
    color: var(--primary);
}

.nav-links a.active {
    background-color: var(--primary);
    color: white;
    box-shadow: var(--shadow);
}

/* Components */
.card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.tutorial-step {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    padding: 2rem;
    background: var(--bg-sidebar);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

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

.step-content h3 {
    margin-top: 0;
}

.callout {
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius);
    margin: 2rem 0;
    border-left: 4px solid;
    display: flex;
    gap: 1rem;
}

.callout-info {
    background-color: #eff6ff;
    border-left-color: var(--info);
    color: #1e40af;
}

.callout-warning {
    background-color: #fffbeb;
    border-left-color: var(--warning);
    color: #92400e;
}

.callout-success {
    background-color: #ecfdf5;
    border-left-color: var(--success);
    color: #065f46;
}

.callout p {
    margin: 0;
    font-size: 1rem;
    color: inherit;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 600;
    transition: background-color 0.2s;
    border: none;
    cursor: pointer;
    gap: 0.5rem;
}

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}

.btn-outline:hover {
    background-color: var(--bg-sidebar);
    color: var(--text-main);
}

.next-prev-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

/* Tags & Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary { background: var(--primary-light); color: var(--primary); }

/* Code blocks (Keep them clean) */
code {
    background-color: #f3f4f6;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-family: ui-monospace, monospace;
    font-size: 0.9em;
    color: #e11d48;
}

/* Enhanced Components */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2.5rem 0;
}

.feature-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    cursor: default;
}

.feature-card h3 {
    margin: 0 0 1rem 0;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.feature-card p {
    margin: 0;
    font-size: 1.125rem;
    line-height: 1.7;
}

.icon-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: var(--primary-light);
    border-radius: var(--radius);
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.progress-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 2rem 0;
    padding: 1rem;
    background: var(--bg-sidebar);
    border-radius: var(--radius);
}

.progress-step {
    flex: 1;
    height: 0.5rem;
    background: var(--border);
    border-radius: 9999px;
    position: relative;
    overflow: hidden;
}

.progress-step.active {
    background: var(--primary);
}

.progress-step.completed {
    background: var(--success);
}

.info-box {
    background: var(--info-light);
    border-left: 4px solid var(--info);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin: 2rem 0;
}

.info-box-icon {
    display: inline-block;
    font-size: 1.5rem;
    margin-right: 0.75rem;
}

.info-box h4 {
    margin: 0 0 0.5rem 0;
    color: var(--info);
    font-size: 1.1rem;
}

.info-box p {
    margin: 0;
    color: #1e40af;
    font-size: 1rem;
}

.steps-container {
    position: relative;
    margin: 3rem 0;
}

.steps-container::before {
    content: '';
    position: absolute;
    left: 1.25rem;
    top: 3rem;
    bottom: 3rem;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--success));
    opacity: 0.3;
}

.tutorial-step {
    position: relative;
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2.5rem;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.step-number {
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    position: relative;
    z-index: 1;
}

.account-type-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.account-type-card {
    background: white;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    transition: all 0.2s ease;
}

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

.account-type-card .icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    display: block;
}

.account-type-card h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    color: var(--text-main);
}

.account-type-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.workflow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.workflow-card {
    background: white;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.workflow-card:hover {
    border-color: var(--success);
    box-shadow: var(--shadow-md);
}

.workflow-card h3 {
    margin: 0 0 1rem 0;
    font-size: 1.2rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.workflow-card ol {
    margin: 0;
    padding-left: 1.2rem;
}

.workflow-card li {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.highlight-box {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--info-light) 100%);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin: 2.5rem 0;
    text-align: center;
}

.highlight-box h3 {
    margin: 0 0 1rem 0;
    color: var(--primary);
    font-size: 1.5rem;
}

.highlight-box p {
    margin: 0;
    color: var(--text-main);
    font-size: 1.1rem;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-info { background: var(--info-light); color: var(--info); }

/* Section Headers */
.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 3.5rem;
    margin-bottom: 1.5rem;
}

.section-header h2 {
    margin: 0;
    border: none;
    padding: 0;
    flex: 1;
}

.section-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--primary);
    color: white;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 1.25rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar { width: 260px; }
    .main-container { margin-left: 260px; }
    .main-content { padding: 3rem 2.5rem; }
    .feature-grid, .workflow-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    body { flex-direction: column; }
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding: 1.5rem;
    }
    .main-container { margin-left: 0; }
    .main-content { padding: 2rem 1.5rem; }
    .tutorial-step { flex-direction: column; gap: 1rem; }
    .steps-container::before { display: none; }
    .feature-grid, .workflow-grid { grid-template-columns: 1fr; }
    .account-type-grid { grid-template-columns: 1fr; }
}