/* ===================================
   John A. Eisenhauer - AI Thought Leader Website
   CSS Styles
   =================================== */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #1a365d;
    --color-primary-light: #2c5282;
    --color-primary-dark: #0d1f3c;
    --color-accent: #3182ce;
    --color-accent-light: #4299e1;
    --color-accent-gradient: linear-gradient(135deg, #3182ce 0%, #805ad5 100%);

    --color-text: #1a202c;
    --color-text-light: #4a5568;
    --color-text-muted: #718096;

    --color-bg: #ffffff;
    --color-bg-alt: #f7fafc;
    --color-bg-dark: #1a202c;

    --color-border: #e2e8f0;
    --color-border-light: #edf2f7;

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Container */
    --container-max: 1200px;
    --container-narrow: 800px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.5rem, 3vw, 1.875rem); }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--space-md);
}

.lead {
    font-size: 1.25rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary-light);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--space-md) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
}

.logo-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.logo-tagline {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
}

.nav-menu a {
    color: var(--color-text);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-accent);
}

.btn-nav {
    background: var(--color-primary);
    color: #fff !important;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
}

.btn-nav:hover {
    background: var(--color-primary-light);
    color: #fff !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-primary);
    transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + var(--space-3xl)) 0 var(--space-3xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(49, 130, 206, 0.05) 0%, rgba(128, 90, 213, 0.05) 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.hero-title {
    margin-bottom: var(--space-lg);
}

.gradient-text {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-xl);
}

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    width: 400px;
    height: 400px;
}

.hero-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-xl);
}

.hero-image-accent {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 3px solid var(--color-accent);
    border-radius: 50%;
    opacity: 0.3;
}

/* Value Proposition */
.value-prop {
    padding: var(--space-4xl) 0;
    background: var(--color-primary);
    color: #fff;
}

.value-prop-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.value-prop h2 {
    color: #fff;
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    line-height: 1.4;
}

.value-prop p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 0;
}

/* Section Styles */
section {
    padding: var(--space-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}

.section-cta {
    text-align: center;
    margin-top: var(--space-2xl);
}

/* Services Grid */
.services-overview {
    background: var(--color-bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.service-card {
    background: #fff;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(49, 130, 206, 0.1) 0%, rgba(128, 90, 213, 0.1) 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    color: var(--color-accent);
}

.service-card h3 {
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.service-card p {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.service-link {
    font-weight: 500;
    color: var(--color-accent);
}

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

/* About Preview */
.about-preview-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.about-preview-content h2 {
    margin-bottom: var(--space-lg);
}

.about-preview-content .lead {
    margin-bottom: var(--space-md);
}

.about-preview-content .btn {
    margin-top: var(--space-lg);
}

.about-preview-credentials {
    background: var(--color-bg-alt);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
}

.about-preview-credentials h3 {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    color: var(--color-text-muted);
}

.credentials-list {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.credentials-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: 0.9375rem;
}

.credential-icon {
    font-size: 1.25rem;
    line-height: 1.4;
}

.industries-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    color: var(--color-text-light);
}

/* Featured Insights */
.featured-insights {
    background: var(--color-bg-alt);
}

.insights-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

.insight-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.insight-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.insight-card.featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.insight-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.insight-card.featured .insight-image {
    height: 100%;
    min-height: 300px;
}

.insight-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.insight-card:hover .insight-image img {
    transform: scale(1.05);
}

.insight-category {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-accent);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
}

.insight-content {
    padding: var(--space-lg);
}

.insight-card.featured .insight-content {
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.insight-content h3 {
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.insight-card.featured .insight-content h3 {
    font-size: 1.5rem;
}

.insight-content h3 a {
    color: var(--color-primary);
}

.insight-content h3 a:hover {
    color: var(--color-accent);
}

.insight-content p {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    margin-bottom: var(--space-md);
}

.insight-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

.read-time {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.read-more {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Books Preview */
.books-featured {
    max-width: 900px;
    margin: 0 auto;
}

.book-card.featured-book {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--space-2xl);
    background: var(--color-bg-alt);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    align-items: center;
}

.book-cover {
    position: relative;
}

.book-cover img {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.book-badge {
    position: absolute;
    top: var(--space-md);
    right: -var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-accent);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.book-info h3 {
    font-family: var(--font-body);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.book-description {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.book-highlight {
    font-style: italic;
    color: var(--color-text-muted);
    padding-left: var(--space-md);
    border-left: 3px solid var(--color-accent);
    margin-bottom: var(--space-lg);
}

.books-more {
    text-align: center;
    margin-top: var(--space-xl);
    color: var(--color-text-light);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #fff;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    color: #fff;
    margin-bottom: var(--space-md);
}

.cta-content p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--space-xl);
}

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

.cta-section .btn-primary {
    background: #fff;
    color: var(--color-primary);
    border-color: #fff;
}

.cta-section .btn-primary:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-light);
    color: #fff;
}

.cta-section .btn-secondary {
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}

.cta-section .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-logo {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--space-md);
}

.footer-logo .logo-name {
    color: #fff;
}

.footer-logo .logo-tagline {
    color: rgba(255, 255, 255, 0.6);
}

.footer-brand p {
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

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

.social-links a:hover {
    background: var(--color-accent);
}

.footer h4 {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #fff;
    margin-bottom: var(--space-lg);
}

.footer ul {
    list-style: none;
}

.footer ul li {
    margin-bottom: var(--space-sm);
}

.footer ul a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer ul a:hover {
    color: #fff;
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.contact-info svg {
    opacity: 0.7;
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    margin-bottom: 0;
    opacity: 0.6;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image-wrapper {
        width: 300px;
        height: 300px;
    }

    .about-preview-grid {
        grid-template-columns: 1fr;
    }

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

    .insight-card.featured {
        grid-template-columns: 1fr;
    }

    .book-card.featured-book {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .book-cover {
        max-width: 200px;
        margin: 0 auto;
    }

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: var(--space-xl);
        gap: var(--space-md);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hero {
        min-height: auto;
        padding: calc(80px + var(--space-2xl)) 0 var(--space-2xl);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
        align-items: center;
    }

    .stat {
        align-items: center;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-image {
        display: none;
    }

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

    .cta-buttons {
        flex-direction: column;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .contact-info li {
        justify-content: center;
    }
}

/* Page-specific styles */
/* About Page */
.page-hero {
    padding: calc(80px + var(--space-3xl)) 0 var(--space-2xl);
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    text-align: center;
}

.page-hero h1 {
    margin-bottom: var(--space-md);
}

.page-hero .lead {
    max-width: 700px;
    margin: 0 auto;
}

.content-section {
    padding: var(--space-3xl) 0;
}

.content-section.alt {
    background: var(--color-bg-alt);
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.content-grid.reverse {
    direction: rtl;
}

.content-grid.reverse > * {
    direction: ltr;
}

/* Experience Timeline */
.timeline {
    position: relative;
    padding-left: var(--space-2xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-2xl);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-2xl) - 5px);
    top: 8px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-accent);
    border: 2px solid #fff;
    box-shadow: var(--shadow-sm);
}

.timeline-item h3 {
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.timeline-item .company {
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.timeline-item .period {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.timeline-item p {
    color: var(--color-text-light);
}

.timeline-item ul {
    margin-top: var(--space-sm);
    padding-left: var(--space-lg);
    color: var(--color-text-light);
}

.timeline-item li {
    margin-bottom: var(--space-xs);
}

/* Form Styles */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }