/* ============================================
   RankBoost Learning Hub - Complete Stylesheet
   Version: 1.0
   Author: RankBoost Team
   Prefix: lea- (Learning Hub)
   ============================================ */

/* ============================================
   CSS Variables & Root Settings
   ============================================ */
:root {
    --lea-primary: #6366f1;
    --lea-primary-dark: #4f46e5;
    --lea-primary-light: #818cf8;
    --lea-primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    
    --lea-secondary: #14b8a6;
    --lea-secondary-dark: #0d9488;
    --lea-secondary-light: #2dd4bf;
    
    --lea-accent: #f59e0b;
    --lea-accent-dark: #d97706;
    --lea-accent-light: #fbbf24;
    
    --lea-dark: #0f172a;
    --lea-darker: #020617;
    --lea-gray-900: #111827;
    --lea-gray-800: #1f2937;
    --lea-gray-700: #374151;
    --lea-gray-600: #4b5563;
    --lea-gray-500: #6b7280;
    --lea-gray-400: #9ca3af;
    --lea-gray-300: #d1d5db;
    --lea-gray-200: #e5e7eb;
    --lea-gray-100: #f3f4f6;
    --lea-light: #f9fafb;
    --lea-white: #ffffff;
    
    --lea-success: #10b981;
    --lea-success-dark: #059669;
    --lea-danger: #ef4444;
    --lea-danger-dark: #dc2626;
    --lea-warning: #f59e0b;
    --lea-info: #3b82f6;
    
    --lea-spacing-xs: 0.25rem;
    --lea-spacing-sm: 0.5rem;
    --lea-spacing-md: 1rem;
    --lea-spacing-lg: 1.5rem;
    --lea-spacing-xl: 2rem;
    --lea-spacing-2xl: 3rem;
    --lea-spacing-3xl: 4rem;
    --lea-spacing-4xl: 6rem;
    
    --lea-radius-sm: 0.25rem;
    --lea-radius-md: 0.5rem;
    --lea-radius-lg: 0.75rem;
    --lea-radius-xl: 1rem;
    --lea-radius-2xl: 1.5rem;
    --lea-radius-full: 9999px;
    
    --lea-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --lea-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --lea-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --lea-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --lea-shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    --lea-transition-fast: 150ms ease;
    --lea-transition-base: 250ms ease;
    --lea-transition-slow: 350ms ease;
    
    --lea-container-sm: 640px;
    --lea-container-md: 768px;
    --lea-container-lg: 1024px;
    --lea-container-xl: 1280px;
    --lea-container-2xl: 1536px;
    
    --lea-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --lea-font-mono: 'SF Mono', 'Fira Code', 'Courier New', monospace;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --lea-primary: #818cf8;
    --lea-primary-dark: #6366f1;
    --lea-dark: #f9fafb;
    --lea-darker: #ffffff;
    --lea-gray-900: #f3f4f6;
    --lea-gray-800: #e5e7eb;
    --lea-gray-700: #d1d5db;
    --lea-gray-600: #9ca3af;
    --lea-gray-500: #6b7280;
    --lea-gray-400: #4b5563;
    --lea-gray-300: #374151;
    --lea-gray-200: #1f2937;
    --lea-gray-100: #111827;
    --lea-light: #0f172a;
    --lea-white: #1e293b;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--lea-font-sans);
    line-height: 1.6;
    color: var(--lea-gray-800);
    background: var(--lea-light);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--lea-primary);
    transition: color var(--lea-transition-fast);
}

a:hover {
    color: var(--lea-primary-dark);
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

/* ============================================
   Container & Layout
   ============================================ */
.lea-container {
    max-width: var(--lea-container-xl);
    margin: 0 auto;
    padding: 0 var(--lea-spacing-lg);
}

@media (min-width: 1536px) {
    .lea-container {
        max-width: var(--lea-container-2xl);
    }
}

@media (max-width: 768px) {
    .lea-container {
        padding: 0 var(--lea-spacing-md);
    }
}

/* ============================================
   Typography
   ============================================ */
.lea-h1, .lea-h2, .lea-h3, .lea-h4, .lea-h5, .lea-h6,
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--lea-dark);
    margin-bottom: var(--lea-spacing-md);
}

.lea-h1, h1 {
    font-size: 3rem;
    font-weight: 800;
}

.lea-h2, h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-top: var(--lea-spacing-2xl);
    margin-bottom: var(--lea-spacing-lg);
}

.lea-h3, h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: var(--lea-spacing-xl);
    margin-bottom: var(--lea-spacing-md);
}

.lea-h4, h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

.lea-text, p {
    margin-bottom: var(--lea-spacing-md);
    color: var(--lea-gray-600);
}

@media (max-width: 768px) {
    .lea-h1, h1 {
        font-size: 2rem;
    }
    
    .lea-h2, h2 {
        font-size: 1.75rem;
    }
    
    .lea-h3, h3 {
        font-size: 1.25rem;
    }
}

/* ============================================
   Header & Navigation
   ============================================ */
.lea-header {
    background: var(--lea-white);
    box-shadow: var(--lea-shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .lea-header {
    background: rgba(30, 41, 59, 0.95);
}

.lea-navbar {
    padding: var(--lea-spacing-md) 0;
}

.lea-nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--lea-spacing-xl);
}

.lea-logo a {
    display: flex;
    align-items: center;
    gap: var(--lea-spacing-sm);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--lea-primary);
    text-decoration: none;
}

.lea-logo-img {
    height: 40px;
    width: auto;
}

.lea-logo span {
    background: var(--lea-primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.lea-nav-menu {
    display: flex;
    align-items: center;
    gap: var(--lea-spacing-xl);
    flex: 1;
    justify-content: flex-end;
}

.lea-nav-links {
    display: flex;
    align-items: center;
    gap: var(--lea-spacing-lg);
    list-style: none;
}

.lea-nav-links > li > a {
    color: var(--lea-gray-700);
    font-weight: 500;
    padding: var(--lea-spacing-sm) var(--lea-spacing-md);
    border-radius: var(--lea-radius-md);
    transition: all var(--lea-transition-fast);
    display: flex;
    align-items: center;
    gap: var(--lea-spacing-xs);
}

.lea-nav-links > li > a:hover,
.lea-nav-links > li > a.lea-active {
    color: var(--lea-primary);
    background: var(--lea-gray-100);
}

.lea-dropdown {
    position: relative;
}

.lea-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--lea-white);
    min-width: 220px;
    box-shadow: var(--lea-shadow-lg);
    border-radius: var(--lea-radius-lg);
    padding: var(--lea-spacing-sm) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--lea-transition-base);
    z-index: 100;
    border: 1px solid var(--lea-gray-200);
}

.lea-dropdown:hover .lea-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lea-dropdown-menu li a {
    display: block;
    padding: var(--lea-spacing-sm) var(--lea-spacing-lg);
    color: var(--lea-gray-700);
    transition: all var(--lea-transition-fast);
}

.lea-dropdown-menu li a:hover {
    background: var(--lea-gray-100);
    color: var(--lea-primary);
    padding-left: calc(var(--lea-spacing-lg) + var(--lea-spacing-xs));
}

.lea-nav-actions {
    display: flex;
    align-items: center;
    gap: var(--lea-spacing-sm);
}

.lea-btn-login,
.lea-btn-signup {
    padding: var(--lea-spacing-sm) var(--lea-spacing-lg);
    border-radius: var(--lea-radius-full);
    font-weight: 500;
    transition: all var(--lea-transition-fast);
}

.lea-btn-login {
    color: var(--lea-primary);
    border: 1px solid var(--lea-primary);
    background: transparent;
}

.lea-btn-login:hover {
    background: var(--lea-primary);
    color: var(--lea-white);
}

.lea-btn-signup {
    background: var(--lea-primary-gradient);
    color: var(--lea-white);
}

.lea-btn-signup:hover {
    transform: translateY(-2px);
    box-shadow: var(--lea-shadow-md);
}

.lea-mobile-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--lea-gray-700);
}

@media (max-width: 1024px) {
    .lea-nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--lea-white);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--lea-spacing-2xl);
        transition: right var(--lea-transition-base);
        box-shadow: var(--lea-shadow-xl);
        z-index: 1001;
    }
    
    .lea-nav-menu.lea-active {
        right: 0;
    }
    
    .lea-nav-links {
        flex-direction: column;
        width: 100%;
    }
    
    .lea-dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: var(--lea-spacing-lg);
        display: none;
    }
    
    .lea-dropdown.lea-active .lea-dropdown-menu {
        display: block;
    }
    
    .lea-nav-actions {
        flex-direction: column;
        width: 100%;
        margin-top: var(--lea-spacing-xl);
    }
    
    .lea-mobile-toggle {
        display: block;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.lea-hero {
    background: var(--lea-primary-gradient);
    padding: var(--lea-spacing-4xl) 0;
    color: var(--lea-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.lea-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><path fill="rgba(255,255,255,0.05)" d="M45.3,-77.6C59.1,-68.3,71.1,-55.1,77.6,-39.2C84.1,-23.3,85.1,-4.7,80.4,11.9C75.7,28.5,65.3,43.1,52.8,56.2C40.3,69.3,25.7,80.9,8.9,85.3C-7.9,89.7,-26.9,87,-42.4,78.5C-57.9,70,-69.9,55.7,-77.5,39.1C-85.1,22.5,-88.3,3.7,-83.4,-12.2C-78.5,-28.1,-65.5,-41.1,-51.6,-50.3C-37.7,-59.5,-22.9,-64.9,-7.4,-69.1C8.1,-73.3,31.5,-86.9,45.3,-77.6Z" transform="translate(100 100)"/></svg>') no-repeat center;
    background-size: cover;
    opacity: 0.1;
}

.lea-hero-content {
    position: relative;
    z-index: 1;
}

.lea-hero-content h1 {
    color: var(--lea-white);
    font-size: 3.5rem;
    margin-bottom: var(--lea-spacing-md);
}

.lea-hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--lea-spacing-2xl);
}

@media (max-width: 768px) {
    .lea-hero-content h1 {
        font-size: 2rem;
    }
    
    .lea-hero-subtitle {
        font-size: 1rem;
    }
}

/* ============================================
   Search Container
   ============================================ */
.lea-search-container {
    max-width: 600px;
    margin: var(--lea-spacing-xl) auto 0;
    position: relative;
}

.lea-search-wrapper {
    position: relative;
}

.lea-search-input {
    width: 100%;
    padding: var(--lea-spacing-lg) var(--lea-spacing-lg) var(--lea-spacing-lg) var(--lea-spacing-2xl);
    font-size: 1rem;
    border: none;
    border-radius: var(--lea-radius-full);
    outline: none;
    background: var(--lea-white);
    box-shadow: var(--lea-shadow-lg);
    transition: all var(--lea-transition-base);
}

.lea-search-input:focus {
    box-shadow: var(--lea-shadow-xl);
    transform: translateY(-2px);
}

.lea-search-icon {
    position: absolute;
    left: var(--lea-spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--lea-gray-400);
}

.lea-search-btn {
    position: absolute;
    right: var(--lea-spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    padding: var(--lea-spacing-sm) var(--lea-spacing-xl);
    background: var(--lea-primary-gradient);
    color: var(--lea-white);
    border-radius: var(--lea-radius-full);
    font-weight: 500;
    transition: all var(--lea-transition-fast);
}

.lea-search-btn:hover {
    transform: translateY(-50%) scale(0.98);
}

.lea-search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--lea-white);
    border-radius: var(--lea-radius-lg);
    box-shadow: var(--lea-shadow-lg);
    margin-top: var(--lea-spacing-sm);
    display: none;
    z-index: 100;
    max-height: 300px;
    overflow-y: auto;
}

.lea-search-suggestions.lea-active {
    display: block;
}

.lea-suggestion-item {
    padding: var(--lea-spacing-md) var(--lea-spacing-lg);
    cursor: pointer;
    transition: background var(--lea-transition-fast);
}

.lea-suggestion-item:hover {
    background: var(--lea-gray-100);
    color: var(--lea-primary);
}

.lea-popular-searches {
    display: flex;
    gap: var(--lea-spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--lea-spacing-lg);
}

.lea-popular-searches span {
    opacity: 0.8;
    color: var(--lea-white);
}

.lea-popular-searches a {
    color: var(--lea-white);
    text-decoration: none;
    padding: var(--lea-spacing-xs) var(--lea-spacing-md);
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--lea-radius-full);
    transition: all var(--lea-transition-fast);
}

.lea-popular-searches a:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* ============================================
   Cards & Grids
   ============================================ */
.lea-section {
    padding: var(--lea-spacing-4xl) 0;
}

.lea-section-header {
    text-align: center;
    margin-bottom: var(--lea-spacing-3xl);
}

.lea-section-header h2 {
    margin-bottom: var(--lea-spacing-sm);
}

.lea-section-header p {
    color: var(--lea-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

.lea-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--lea-spacing-xl);
}

.lea-card {
    background: var(--lea-white);
    border-radius: var(--lea-radius-xl);
    padding: var(--lea-spacing-xl);
    box-shadow: var(--lea-shadow-md);
    transition: all var(--lea-transition-base);
    text-decoration: none;
    color: inherit;
    display: block;
    border: 1px solid var(--lea-gray-200);
}

.lea-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--lea-shadow-xl);
    border-color: var(--lea-primary-light);
}

.lea-card-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--lea-primary-gradient);
    border-radius: var(--lea-radius-lg);
    margin-bottom: var(--lea-spacing-lg);
}

.lea-card-icon i {
    font-size: 1.75rem;
    color: var(--lea-white);
}

.lea-card h3 {
    margin-bottom: var(--lea-spacing-sm);
    color: var(--lea-dark);
}

.lea-card p {
    color: var(--lea-gray-500);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ============================================
   Article Page Styles
   ============================================ */
.lea-article-page {
    padding: var(--lea-spacing-3xl) 0;
}

.lea-article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--lea-spacing-2xl);
}

.lea-article-main {
    background: var(--lea-white);
    border-radius: var(--lea-radius-xl);
    padding: var(--lea-spacing-2xl);
    box-shadow: var(--lea-shadow-md);
}

.lea-breadcrumb {
    margin-bottom: var(--lea-spacing-xl);
    padding-bottom: var(--lea-spacing-md);
    border-bottom: 1px solid var(--lea-gray-200);
}

.lea-breadcrumb ul {
    display: flex;
    flex-wrap: wrap;
    gap: var(--lea-spacing-sm);
}

.lea-breadcrumb li {
    display: inline-flex;
    align-items: center;
    color: var(--lea-gray-500);
    font-size: 0.875rem;
}

.lea-breadcrumb li:not(:last-child)::after {
    content: '/';
    margin-left: var(--lea-spacing-sm);
    color: var(--lea-gray-400);
}

.lea-breadcrumb a {
    color: var(--lea-primary);
}

.lea-article-header {
    margin-bottom: var(--lea-spacing-2xl);
}

.lea-article-category {
    display: inline-flex;
    align-items: center;
    gap: var(--lea-spacing-xs);
    background: var(--lea-gray-100);
    color: var(--lea-primary);
    padding: var(--lea-spacing-xs) var(--lea-spacing-md);
    border-radius: var(--lea-radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--lea-spacing-md);
}

.lea-article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--lea-spacing-lg);
    margin: var(--lea-spacing-md) 0;
}

.lea-meta-item {
    display: flex;
    align-items: center;
    gap: var(--lea-spacing-xs);
    color: var(--lea-gray-500);
    font-size: 0.875rem;
}

.lea-article-body {
    line-height: 1.8;
}

.lea-article-intro {
    font-size: 1.125rem;
    margin-bottom: var(--lea-spacing-2xl);
}

.lea-highlight-box {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-left: 4px solid var(--lea-primary);
    padding: var(--lea-spacing-lg);
    border-radius: var(--lea-radius-lg);
    margin: var(--lea-spacing-xl) 0;
    display: flex;
    gap: var(--lea-spacing-md);
}

.lea-highlight-box i {
    font-size: 1.5rem;
    color: var(--lea-primary);
}

.lea-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--lea-spacing-lg);
    margin: var(--lea-spacing-xl) 0;
}

.lea-stat-card {
    text-align: center;
    padding: var(--lea-spacing-lg);
    background: var(--lea-gray-100);
    border-radius: var(--lea-radius-lg);
}

.lea-stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--lea-primary);
    margin-bottom: var(--lea-spacing-xs);
}

.lea-stat-label {
    font-size: 0.875rem;
    color: var(--lea-gray-600);
}

.lea-benefits-list {
    list-style: none;
    margin: var(--lea-spacing-lg) 0;
}

.lea-benefits-list li {
    padding: var(--lea-spacing-sm) 0;
    padding-left: var(--lea-spacing-xl);
    position: relative;
}

.lea-benefits-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--lea-success);
    font-weight: bold;
}

.lea-pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--lea-spacing-xl);
    margin: var(--lea-spacing-xl) 0;
}

.lea-pillar {
    text-align: center;
    padding: var(--lea-spacing-xl);
    background: var(--lea-gray-100);
    border-radius: var(--lea-radius-lg);
    transition: all var(--lea-transition-base);
}

.lea-pillar:hover {
    transform: translateY(-4px);
    box-shadow: var(--lea-shadow-md);
}

.lea-pillar-icon {
    width: 70px;
    height: 70px;
    background: var(--lea-primary-gradient);
    border-radius: var(--lea-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--lea-spacing-lg);
}

.lea-pillar-icon i {
    font-size: 2rem;
    color: var(--lea-white);
}

.lea-pillar-link {
    display: inline-block;
    margin-top: var(--lea-spacing-md);
    font-weight: 500;
}

.lea-table-wrapper {
    overflow-x: auto;
    margin: var(--lea-spacing-xl) 0;
}

.lea-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--lea-white);
    border-radius: var(--lea-radius-lg);
    overflow: hidden;
}

.lea-table th,
.lea-table td {
    padding: var(--lea-spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--lea-gray-200);
}

.lea-table th {
    background: var(--lea-gray-100);
    font-weight: 600;
    color: var(--lea-dark);
}

.lea-table tr:hover {
    background: var(--lea-gray-50);
}

.lea-steps-timeline {
    margin: var(--lea-spacing-xl) 0;
}

.lea-step {
    display: flex;
    gap: var(--lea-spacing-lg);
    margin-bottom: var(--lea-spacing-xl);
    position: relative;
}

.lea-step-number {
    width: 50px;
    height: 50px;
    background: var(--lea-primary-gradient);
    border-radius: var(--lea-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--lea-white);
    flex-shrink: 0;
}

.lea-step-content {
    flex: 1;
}

.lea-step-action {
    margin-top: var(--lea-spacing-sm);
}

.lea-mistakes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--lea-spacing-lg);
    margin: var(--lea-spacing-xl) 0;
}

.lea-mistake-card {
    padding: var(--lea-spacing-lg);
    background: var(--lea-gray-100);
    border-radius: var(--lea-radius-lg);
    border-left: 3px solid var(--lea-danger);
}

.lea-mistake-card i {
    font-size: 1.5rem;
    color: var(--lea-danger);
    margin-bottom: var(--lea-spacing-sm);
}

.lea-tools-showcase,
.lea-services-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--lea-spacing-lg);
    margin: var(--lea-spacing-xl) 0;
}

.lea-tool-item,
.lea-service-card {
    display: flex;
    gap: var(--lea-spacing-md);
    padding: var(--lea-spacing-lg);
    background: var(--lea-gray-100);
    border-radius: var(--lea-radius-lg);
    transition: all var(--lea-transition-base);
}

.lea-tool-item:hover,
.lea-service-card:hover {
    transform: translateX(4px);
    background: var(--lea-gray-200);
}

.lea-tool-item i,
.lea-service-card i {
    font-size: 1.5rem;
    color: var(--lea-primary);
}

.lea-tool-item h4,
.lea-service-card h4 {
    margin-bottom: var(--lea-spacing-xs);
}

.lea-key-takeaways {
    background: var(--lea-primary-gradient);
    padding: var(--lea-spacing-xl);
    border-radius: var(--lea-radius-lg);
    margin: var(--lea-spacing-xl) 0;
}

.lea-key-takeaways ul {
    list-style: none;
}

.lea-key-takeaways li {
    padding: var(--lea-spacing-sm) 0;
    padding-left: var(--lea-spacing-xl);
    position: relative;
    color: var(--lea-white);
}

.lea-key-takeaways li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--lea-white);
}

.lea-faq-section {
    margin: var(--lea-spacing-xl) 0;
}

.lea-faq-item {
    border-bottom: 1px solid var(--lea-gray-200);
    margin-bottom: var(--lea-spacing-md);
}

.lea-faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--lea-spacing-md) 0;
    cursor: pointer;
}

.lea-faq-question h3 {
    margin: 0;
    font-size: 1.125rem;
}

.lea-faq-question i {
    transition: transform var(--lea-transition-base);
}

.lea-faq-item.lea-active .lea-faq-question i {
    transform: rotate(180deg);
}

.lea-faq-answer {
    display: none;
    padding-bottom: var(--lea-spacing-md);
    color: var(--lea-gray-600);
}

.lea-faq-item.lea-active .lea-faq-answer {
    display: block;
}

.lea-code-block {
    background: var(--lea-gray-900);
    border-radius: var(--lea-radius-lg);
    margin: var(--lea-spacing-xl) 0;
    overflow: hidden;
}

.lea-code-header {
    background: var(--lea-gray-800);
    padding: var(--lea-spacing-sm) var(--lea-spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lea-code-header span {
    color: var(--lea-gray-400);
    font-size: 0.875rem;
}

.lea-copy-btn {
    background: transparent;
    color: var(--lea-gray-400);
    padding: var(--lea-spacing-xs) var(--lea-spacing-sm);
    border-radius: var(--lea-radius-sm);
    transition: all var(--lea-transition-fast);
}

.lea-copy-btn:hover {
    background: var(--lea-gray-700);
    color: var(--lea-white);
}

.lea-pre {
    display: grid;
    grid-template-columns: 0;
    margin: 0;
    padding: var(--lea-spacing-lg);
    overflow-x: auto;
}

.lea-code {
    font-family: var(--lea-font-mono);
    font-size: 0.875rem;
    color: var(--lea-gray-300);
    line-height: 1.5;
}

.lea-call-to-action {
    text-align: center;
    background: var(--lea-primary-gradient);
    padding: var(--lea-spacing-2xl);
    border-radius: var(--lea-radius-xl);
    margin: var(--lea-spacing-2xl) 0;
}

.lea-call-to-action h3 {
    color: var(--lea-white);
    margin-bottom: var(--lea-spacing-sm);
}

.lea-call-to-action p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--lea-spacing-lg);
}

.lea-cta-buttons {
    display: flex;
    gap: var(--lea-spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.lea-btn-primary,
.lea-btn-secondary {
    padding: var(--lea-spacing-md) var(--lea-spacing-xl);
    border-radius: var(--lea-radius-full);
    font-weight: 600;
    transition: all var(--lea-transition-fast);
    display: inline-block;
}

.lea-btn-primary {
    background: var(--lea-white);
    color: var(--lea-primary);
}

.lea-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--lea-shadow-lg);
}

.lea-btn-secondary {
    background: transparent;
    border: 2px solid var(--lea-white);
    color: var(--lea-white);
}

.lea-btn-secondary:hover {
    background: var(--lea-white);
    color: var(--lea-primary);
}

.lea-btn-small {
    padding: var(--lea-spacing-xs) var(--lea-spacing-md);
    border-radius: var(--lea-radius-full);
    background: var(--lea-primary);
    color: var(--lea-white);
    font-size: 0.875rem;
    display: inline-block;
}

.lea-article-footer {
    margin-top: var(--lea-spacing-2xl);
    padding-top: var(--lea-spacing-xl);
    border-top: 1px solid var(--lea-gray-200);
}

.lea-article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--lea-spacing-sm);
    margin-bottom: var(--lea-spacing-lg);
}

.lea-article-tags span {
    font-weight: 600;
    color: var(--lea-dark);
}

.lea-article-tags a {
    background: var(--lea-gray-100);
    padding: var(--lea-spacing-xs) var(--lea-spacing-md);
    border-radius: var(--lea-radius-full);
    font-size: 0.875rem;
}

.lea-author-bio {
    display: flex;
    gap: var(--lea-spacing-lg);
    padding: var(--lea-spacing-lg);
    background: var(--lea-gray-100);
    border-radius: var(--lea-radius-lg);
    margin-bottom: var(--lea-spacing-xl);
}

.lea-author-avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--lea-radius-full);
    object-fit: cover;
}

.lea-related-articles {
    margin-bottom: var(--lea-spacing-xl);
}

.lea-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--lea-spacing-lg);
    margin-top: var(--lea-spacing-lg);
}

.lea-related-card {
    background: var(--lea-gray-100);
    border-radius: var(--lea-radius-lg);
    overflow: hidden;
    transition: all var(--lea-transition-base);
}

.lea-related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--lea-shadow-md);
}

.lea-related-card a {
    display: block;
    padding: var(--lea-spacing-lg);
    text-decoration: none;
}

.lea-related-image {
    font-size: 2rem;
    margin-bottom: var(--lea-spacing-md);
}

.lea-related-card h4 {
    color: var(--lea-dark);
    margin-bottom: var(--lea-spacing-xs);
}

.lea-related-card p {
    font-size: 0.875rem;
    color: var(--lea-gray-500);
    margin: 0;
}

/* ============================================
   Sidebar Widgets
   ============================================ */
.lea-sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
}

.lea-widget {
    background: var(--lea-white);
    border-radius: var(--lea-radius-lg);
    padding: var(--lea-spacing-lg);
    margin-bottom: var(--lea-spacing-xl);
    box-shadow: var(--lea-shadow-md);
}

.lea-widget h4 {
    margin-bottom: var(--lea-spacing-md);
    padding-bottom: var(--lea-spacing-sm);
    border-bottom: 2px solid var(--lea-primary);
}

.lea-toc ul {
    list-style: none;
}

.lea-toc li {
    margin-bottom: var(--lea-spacing-sm);
}

.lea-toc a {
    color: var(--lea-gray-600);
    font-size: 0.875rem;
    display: block;
    padding: var(--lea-spacing-xs) 0;
}

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

.lea-sidebar-tools,
.lea-sidebar-services {
    display: flex;
    flex-direction: column;
    gap: var(--lea-spacing-sm);
}

.lea-sidebar-tool,
.lea-sidebar-service {
    display: flex;
    align-items: center;
    gap: var(--lea-spacing-sm);
    padding: var(--lea-spacing-sm);
    border-radius: var(--lea-radius-md);
    transition: all var(--lea-transition-fast);
    color: var(--lea-gray-700);
}

.lea-sidebar-tool:hover,
.lea-sidebar-service:hover {
    background: var(--lea-gray-100);
    transform: translateX(4px);
}

.lea-sidebar-tool i,
.lea-sidebar-service i {
    width: 24px;
    color: var(--lea-primary);
}

.lea-newsletter-widget {
    background: var(--lea-primary-gradient);
    color: var(--lea-white);
}

.lea-newsletter-widget h4,
.lea-newsletter-widget p {
    color: var(--lea-white);
}

.lea-newsletter-widget input {
    width: 100%;
    padding: var(--lea-spacing-sm);
    border: none;
    border-radius: var(--lea-radius-md);
    margin: var(--lea-spacing-sm) 0;
}

.lea-newsletter-widget button {
    width: 100%;
    padding: var(--lea-spacing-sm);
    background: var(--lea-white);
    color: var(--lea-primary);
    border-radius: var(--lea-radius-md);
    font-weight: 600;
}

.lea-popular-list {
    display: flex;
    flex-direction: column;
    gap: var(--lea-spacing-md);
}

.lea-popular-list a {
    display: block;
    padding: var(--lea-spacing-sm);
    border-radius: var(--lea-radius-md);
    transition: all var(--lea-transition-fast);
}

.lea-popular-list a:hover {
    background: var(--lea-gray-100);
}

.lea-popular-title {
    font-weight: 600;
    color: var(--lea-dark);
    margin-bottom: var(--lea-spacing-xs);
}

.lea-popular-meta {
    font-size: 0.75rem;
    color: var(--lea-gray-500);
}

/* ============================================
   Search Results Page
   ============================================ */
.lea-search-results {
    padding: var(--lea-spacing-3xl) 0;
}

.lea-search-header {
    text-align: center;
    margin-bottom: var(--lea-spacing-3xl);
}

.lea-search-header h1 {
    margin-bottom: var(--lea-spacing-md);
}

.lea-search-query {
    background: var(--lea-white);
    display: inline-block;
    padding: var(--lea-spacing-sm) var(--lea-spacing-lg);
    border-radius: var(--lea-radius-full);
    margin-bottom: var(--lea-spacing-xl);
    box-shadow: var(--lea-shadow-sm);
}

.lea-search-form-small {
    max-width: 500px;
    margin: 0 auto;
}

.lea-search-form-small form {
    display: flex;
    gap: var(--lea-spacing-sm);
}

.lea-search-form-small input {
    flex: 1;
    padding: var(--lea-spacing-md);
    border: 1px solid var(--lea-gray-300);
    border-radius: var(--lea-radius-md);
}

.lea-search-form-small button {
    padding: var(--lea-spacing-md) var(--lea-spacing-xl);
    background: var(--lea-primary);
    color: var(--lea-white);
    border-radius: var(--lea-radius-md);
}

.lea-results-grid {
    max-width: 800px;
    margin: 0 auto;
}

.lea-result-card {
    background: var(--lea-white);
    border-radius: var(--lea-radius-lg);
    padding: var(--lea-spacing-xl);
    margin-bottom: var(--lea-spacing-lg);
    box-shadow: var(--lea-shadow-md);
    transition: all var(--lea-transition-base);
}

.lea-result-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--lea-shadow-lg);
}

.lea-result-category {
    display: inline-block;
    background: var(--lea-gray-100);
    color: var(--lea-primary);
    padding: var(--lea-spacing-xs) var(--lea-spacing-md);
    border-radius: var(--lea-radius-full);
    font-size: 0.75rem;
    margin-bottom: var(--lea-spacing-md);
}

.lea-result-card h2 {
    margin-top: 0;
    margin-bottom: var(--lea-spacing-md);
}

.lea-result-card h2 a {
    color: var(--lea-dark);
}

.lea-result-card h2 a:hover {
    color: var(--lea-primary);
}

.lea-result-links {
    margin: var(--lea-spacing-lg) 0;
    padding: var(--lea-spacing-md) 0;
    border-top: 1px solid var(--lea-gray-200);
    border-bottom: 1px solid var(--lea-gray-200);
}

.lea-related-tools,
.lea-related-services {
    margin: var(--lea-spacing-sm) 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--lea-spacing-sm);
}

.lea-related-tools i,
.lea-related-services i {
    margin-right: var(--lea-spacing-xs);
    color: var(--lea-primary);
}

.lea-tool-badge,
.lea-service-badge {
    display: inline-block;
    padding: var(--lea-spacing-xs) var(--lea-spacing-md);
    background: var(--lea-gray-100);
    color: var(--lea-primary);
    border-radius: var(--lea-radius-full);
    font-size: 0.75rem;
    transition: all var(--lea-transition-fast);
}

.lea-tool-badge:hover,
.lea-service-badge:hover {
    background: var(--lea-primary);
    color: var(--lea-white);
}

.lea-read-more {
    display: inline-block;
    color: var(--lea-primary);
    font-weight: 500;
    margin-top: var(--lea-spacing-md);
}

.lea-no-results {
    text-align: center;
    padding: var(--lea-spacing-3xl);
    background: var(--lea-white);
    border-radius: var(--lea-radius-lg);
}

.lea-no-results i {
    font-size: 4rem;
    color: var(--lea-gray-400);
    margin-bottom: var(--lea-spacing-lg);
}

.lea-no-results h3 {
    margin-bottom: var(--lea-spacing-md);
}

.lea-suggested-categories {
    margin-top: var(--lea-spacing-xl);
    display: flex;
    gap: var(--lea-spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.lea-suggested-categories a {
    padding: var(--lea-spacing-sm) var(--lea-spacing-lg);
    background: var(--lea-gray-100);
    color: var(--lea-primary);
    border-radius: var(--lea-radius-full);
    transition: all var(--lea-transition-fast);
}

.lea-suggested-categories a:hover {
    background: var(--lea-primary);
    color: var(--lea-white);
}

/* ============================================
   Footer
   ============================================ */
.lea-footer {
    background: var(--lea-gray-900);
    color: var(--lea-gray-400);
    padding: var(--lea-spacing-3xl) 0 var(--lea-spacing-xl);
    margin-top: var(--lea-spacing-3xl);
}

.lea-footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--lea-spacing-2xl);
    margin-bottom: var(--lea-spacing-2xl);
}

.lea-footer-col h3,
.lea-footer-col h4 {
    color: var(--lea-white);
    margin-bottom: var(--lea-spacing-lg);
}

.lea-footer-col ul {
    list-style: none;
}

.lea-footer-col ul li {
    margin-bottom: var(--lea-spacing-sm);
}

.lea-footer-col ul li a {
    color: var(--lea-gray-400);
    transition: color var(--lea-transition-fast);
}

.lea-footer-col ul li a:hover {
    color: var(--lea-white);
    padding-left: var(--lea-spacing-xs);
}

.lea-social-links {
    display: flex;
    gap: var(--lea-spacing-md);
    margin-top: var(--lea-spacing-lg);
}

.lea-social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--lea-radius-full);
    color: var(--lea-white);
    transition: all var(--lea-transition-fast);
}

.lea-social-links a:hover {
    background: var(--lea-primary);
    transform: translateY(-2px);
}

.lea-footer-bottom {
    text-align: center;
    padding-top: var(--lea-spacing-xl);
    border-top: 1px solid var(--lea-gray-800);
    font-size: 0.875rem;
}

/* ============================================
   Progress Bar
   ============================================ */
.lea-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--lea-primary-gradient);
    z-index: 1002;
    transition: width 0.1s ease;
}

/* ============================================
   Back to Top Button
   ============================================ */
.lea-back-to-top {
    position: fixed;
    bottom: var(--lea-spacing-xl);
    right: var(--lea-spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--lea-primary);
    color: var(--lea-white);
    border-radius: var(--lea-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--lea-transition-base);
    z-index: 999;
    box-shadow: var(--lea-shadow-lg);
}

.lea-back-to-top.lea-show {
    opacity: 1;
    visibility: visible;
}

.lea-back-to-top:hover {
    background: var(--lea-primary-dark);
    transform: translateY(-4px);
}

/* ============================================
   Loading Animation
   ============================================ */
.lea-loading-skeleton {
    background: linear-gradient(90deg, var(--lea-gray-200) 25%, var(--lea-gray-300) 50%, var(--lea-gray-200) 75%);
    background-size: 200% 100%;
    animation: lea-loading 1.5s infinite;
}

@keyframes lea-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .lea-article-layout {
        grid-template-columns: 1fr;
    }
    
    .lea-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .lea-hero {
        padding: var(--lea-spacing-2xl) 0;
    }
    
    .lea-grid {
        grid-template-columns: 1fr;
    }
    
    .lea-pillars-grid,
    .lea-stats-grid,
    .lea-mistakes-grid {
        grid-template-columns: 1fr;
    }
    
    .lea-step {
        flex-direction: column;
        text-align: center;
    }
    
    .lea-step-number {
        margin: 0 auto;
    }
    
    .lea-author-bio {
        flex-direction: column;
        text-align: center;
    }
    
    .lea-author-avatar {
        margin: 0 auto;
    }
    
    .lea-cta-buttons {
        flex-direction: column;
    }
    
    .lea-btn-primary,
    .lea-btn-secondary {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .lea-container {
        padding: 0 var(--lea-spacing-md);
    }
    
    .lea-article-main {
        padding: var(--lea-spacing-lg);
    }
    
    .lea-result-card {
        padding: var(--lea-spacing-lg);
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .lea-header,
    .lea-sidebar,
    .lea-article-footer,
    .lea-back-to-top,
    .lea-footer {
        display: none;
    }
    
    .lea-article-main {
        padding: 0;
        box-shadow: none;
    }
    
    .lea-article-body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    a {
        text-decoration: none;
        color: black;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.lea-text-center {
    text-align: center;
}

.lea-text-primary {
    color: var(--lea-primary);
}

.lea-mt-0 { margin-top: 0; }
.lea-mt-1 { margin-top: var(--lea-spacing-sm); }
.lea-mt-2 { margin-top: var(--lea-spacing-md); }
.lea-mt-3 { margin-top: var(--lea-spacing-lg); }
.lea-mt-4 { margin-top: var(--lea-spacing-xl); }

.lea-mb-0 { margin-bottom: 0; }
.lea-mb-1 { margin-bottom: var(--lea-spacing-sm); }
.lea-mb-2 { margin-bottom: var(--lea-spacing-md); }
.lea-mb-3 { margin-bottom: var(--lea-spacing-lg); }
.lea-mb-4 { margin-bottom: var(--lea-spacing-xl); }

.lea-p-0 { padding: 0; }
.lea-p-1 { padding: var(--lea-spacing-sm); }
.lea-p-2 { padding: var(--lea-spacing-md); }
.lea-p-3 { padding: var(--lea-spacing-lg); }
.lea-p-4 { padding: var(--lea-spacing-xl); }

.lea-hidden {
    display: none;
}

.lea-visible {
    display: block;
}