/* ===================================
   Industrial BOILERS Industrial - Stylesheet
   =================================== */

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a4d8f;
    --secondary-color: #ff6b35;
    --dark-color: #1e1e1e;
    --light-color: #f8f9fa;
    --text-color: #333;
    --text-light: #666;
    --border-color: #ddd;
    --success-color: #28a745;
    --error-color: #dc3545;
    --warning-color: #ffc107;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 5px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

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

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

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

ul {
    list-style: none;
}

/* ===== BRAND HIGHLIGHT ===== */
.brand-highlight {
    color: var(--primary-color);
    font-weight: 700;
}

/* Brand highlight in hero section should be white */
.hero .brand-highlight {
    color: var(--white);
}

/* ===== HEADER & NAVIGATION ===== */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background-color: rgba(26, 77, 143, 0.1);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    height: 600px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2563a5 100%);
    background-image: url('../images/boiler-main.jpg');
    background-size: cover;
    background-position: center;
    background-blend-mode: overlay;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 77, 143, 0.85);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--white);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--white);
    animation: fadeInUp 1.2s ease;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 1.4s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 5px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: #e55a2b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

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

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

/* ===== SECTIONS ===== */
section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== INTRO SECTION ===== */
.intro-section {
    background-color: var(--light-color);
}

.intro-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

.intro-text {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* ===== FEATURES SECTION ===== */
.features-section {
    background-color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    padding: 2rem;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== PRODUCTS SECTION ===== */
.products-section {
    background-color: var(--light-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.product-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.product-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.product-info p {
    color: var(--text-light);
}

/* ===== STATISTICS SECTION ===== */
.stats-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2563a5 100%);
    color: var(--white);
}

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

.stat-card {
    text-align: center;
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ===== CTA SECTION ===== */
.cta-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #e55a2b 100%);
    color: var(--white);
    text-align: center;
    padding: 5rem 0;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

/* ===== PAGE HEADER ===== */
.page-header {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2563a5 100%);
    background-image: url('../images/industrial-equipment.jpg');
    background-size: cover;
    background-position: center;
    background-blend-mode: overlay;
    padding: 6rem 0;
    text-align: center;
    color: var(--white);
}

.page-header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 77, 143, 0.85);
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.3rem;
}

/* ===== ABOUT PAGE ===== */
.about-content {
    padding: 4rem 0;
}

.about-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.about-intro h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

.lead {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-light);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 4rem;
}

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

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

.about-image img {
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.mt-4 {
    margin-top: 2rem;
}

/* ===== VALUES SECTION ===== */
.values-section {
    background-color: var(--light-color);
    padding: 4rem 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.value-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.value-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.value-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.value-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== TEAM/EXPERTISE SECTION ===== */
.team-section {
    padding: 4rem 0;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.expertise-card {
    padding: 2rem;
    background-color: var(--light-color);
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
}

.expertise-card:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-5px);
}

.expertise-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.expertise-card:hover i {
    color: var(--white);
}

.expertise-card h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

/* ===== SERVICES PAGE ===== */
.services-overview {
    padding: 3rem 0;
}

.section-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.section-intro h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

.main-services {
    background-color: var(--light-color);
    padding: 4rem 0;
}

.service-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 4rem;
    background-color: var(--white);
    padding: 3rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.service-detail.reverse {
    direction: rtl;
}

.service-detail.reverse > * {
    direction: ltr;
}

.service-image img {
    border-radius: 10px;
    width: 100%;
    height: 350px;
    object-fit: cover;
}

.service-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.service-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 0.5rem 0;
    font-size: 1.05rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-features i {
    color: var(--success-color);
    font-size: 1.2rem;
}

/* ===== INDUSTRIES SECTION ===== */
.industries-section {
    padding: 4rem 0;
    background-color: var(--white);
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.industry-card {
    padding: 2rem;
    background-color: var(--light-color);
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
}

.industry-card:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-5px);
}

.industry-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.industry-card:hover i {
    color: var(--white);
}

.industry-card h4 {
    font-size: 1.2rem;
}

/* ===== CONTACT PAGE ===== */
.contact-section {
    padding: 4rem 0;
    background-color: var(--light-color);
}

.contact-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
}

.contact-intro h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

.contact-form-container {
    background-color: var(--white);
    padding: 3rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.contact-form-container h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--dark-color);
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

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

.required {
    color: var(--error-color);
}

/* ===== OPT-IN SECTION ===== */
.opt-in-section {
    background-color: var(--light-color);
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
}

.opt-in-header h4 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.opt-in-header p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.checkbox-group {
    margin-bottom: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    padding: 1rem;
    background-color: var(--white);
    border-radius: 5px;
    border: 2px solid transparent;
    transition: var(--transition);
}

.checkbox-label:hover {
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    margin-top: 2px;
}

.checkbox-text {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.checkbox-text i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.opt-in-note {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 1rem;
    padding: 0.75rem;
    background-color: #e9ecef;
    border-radius: 5px;
}

.opt-in-note i {
    margin-right: 0.5rem;
}

.opt-in-note a {
    color: var(--primary-color);
    text-decoration: underline;
}

.required-checkbox {
    padding: 1rem;
    background-color: var(--light-color);
    border-radius: 5px;
}

.required-checkbox .checkbox-text a {
    color: var(--primary-color);
    text-decoration: underline;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    margin-top: 1rem;
}

.btn-submit i {
    margin-right: 0.5rem;
}

.form-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 5px;
    display: none;
    text-align: center;
    font-weight: 600;
}

.form-message.success {
    display: block;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    display: block;
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ===== CONTACT INFO CARDS ===== */
.contact-info-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-info-container h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.contact-info-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 1rem;
    transition: var(--transition);
}

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

.info-icon {
    font-size: 2rem;
    color: var(--primary-color);
    width: 50px;
    flex-shrink: 0;
}

.info-content h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.info-content p {
    color: var(--text-color);
    line-height: 1.6;
}

.info-content a {
    color: var(--primary-color);
    text-decoration: underline;
}

.emergency-text {
    display: block;
    margin-top: 0.5rem;
    color: var(--secondary-color);
    font-weight: 600;
}

.social-connect {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.social-connect h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--white);
    margin-right: 0.5rem;
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

/* ===== MAP SECTION ===== */
.map-section {
    padding: 4rem 0;
    background-color: var(--white);
}

.map-section h3 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--dark-color);
}

.map-container {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* ===== POLICY PAGES ===== */
.policy-content {
    padding: 4rem 0;
    background-color: var(--white);
}

.policy-box {
    background-color: var(--light-color);
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.policy-box h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.policy-box h3 {
    font-size: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.policy-box p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-color);
}

.policy-box ul,
.policy-box ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.policy-box li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
    color: var(--text-color);
    list-style: disc;
}

.policy-box ol li {
    list-style: decimal;
}

.policy-box a {
    color: var(--primary-color);
    text-decoration: underline;
}

.contact-details {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 5px;
    margin-top: 1rem;
}

.contact-details p {
    margin-bottom: 0.5rem;
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--dark-color);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-col h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-col p {
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.contact-info li {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.8);
}

.contact-info i {
    color: var(--secondary-color);
    margin-top: 3px;
}

.social-links {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-grid,
    .service-detail {
        grid-template-columns: 1fr;
    }
    
    .about-grid.reverse,
    .service-detail.reverse {
        direction: ltr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .contact-form .form-row {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .page-header p {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        height: 500px;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .contact-form-container {
        padding: 1.5rem;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }