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

:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --highlight-color: #e94560;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #ffffff;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.lead-text {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-primary);
    font-weight: 400;
    margin-bottom: 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

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

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

.logo h1 {
    font-size: 1.5rem;
    margin: 0;
    color: var(--primary-color);
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--highlight-color);
    transition: var(--transition);
}

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

.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-light);
    padding: 150px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 4rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--highlight-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Section Styles */
.section {
    padding: 80px 0;
}

.section:nth-child(even) {
    background-color: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.section-divider {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--highlight-color), var(--accent-color));
    margin: 0 auto 1.5rem;
    border-radius: 2px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.value-item {
    padding: 1.5rem;
    background-color: var(--bg-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.value-item h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.detail-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.detail-card h3 {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.detail-card ul {
    list-style: none;
}

.detail-card li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.detail-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--highlight-color);
    font-weight: bold;
}

.detail-card strong {
    color: var(--highlight-color);
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-10px);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

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

.service-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Operations Section */
.operations-content {
    max-width: 1000px;
    margin: 0 auto;
}

.operations-intro {
    margin-bottom: 3rem;
}

.operations-grid {
    display: grid;
    gap: 2.5rem;
}

.operation-item {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--highlight-color);
}

.operation-item h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.operation-item p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.operation-item ul {
    list-style: none;
    padding-left: 0;
}

.operation-item li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.operation-item li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--highlight-color);
    font-weight: bold;
}

/* Lifecycle Section */
.lifecycle-content {
    max-width: 1000px;
    margin: 0 auto;
}

.lifecycle-stages {
    display: grid;
    gap: 2.5rem;
    margin-top: 3rem;
}

.stage-item {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: var(--transition);
}

.stage-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(10px);
}

.stage-number {
    position: absolute;
    top: -20px;
    left: 30px;
    background: linear-gradient(135deg, var(--highlight-color), var(--accent-color));
    color: var(--text-light);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.stage-item h3 {
    color: var(--accent-color);
    margin-top: 1rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.stage-item ul {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
}

.stage-item li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.stage-item li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--highlight-color);
    font-weight: bold;
    font-size: 1.5rem;
}

/* Fulfillment Section */
.fulfillment-content {
    max-width: 1200px;
    margin: 0 auto;
}

.fulfillment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.fulfillment-item {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.fulfillment-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.fulfillment-item h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.fulfillment-item ul {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
}

.fulfillment-item li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.fulfillment-item li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--highlight-color);
}

/* Customer Section */
.customer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.standards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.standard-item {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.standard-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.standard-item h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.standard-item ul {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
}

.standard-item li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.standard-item li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--highlight-color);
    font-weight: bold;
}

/* Governance Section */
.governance-content {
    max-width: 1200px;
    margin: 0 auto;
}

.governance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.governance-item {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.governance-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.governance-item h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.governance-item ul {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
}

.governance-item li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.governance-item li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--highlight-color);
}

/* Privacy Section */
.privacy-content {
    max-width: 1000px;
    margin: 0 auto;
}

.privacy-policy {
    background-color: var(--bg-white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 3rem;
}

.privacy-policy h3 {
    color: var(--accent-color);
    font-size: 2rem;
    margin-bottom: 1rem;
}

.privacy-policy > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 500;
}

.policy-section {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.policy-section:last-child {
    border-bottom: none;
}

.policy-section h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.policy-section ul {
    margin-top: 1rem;
    padding-left: 1.5rem;
}

.policy-section li {
    margin-bottom: 0.75rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.policy-section strong {
    color: var(--accent-color);
}

.data-protection-standards {
    margin-top: 3rem;
}

.data-protection-standards h3 {
    color: var(--accent-color);
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

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

.standard-box {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border-top: 4px solid var(--highlight-color);
    transition: var(--transition);
}

.standard-box:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.standard-box h4 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.standard-box p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* FAQ Section */
.faq-content {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-white);
    margin-bottom: 1rem;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active {
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: var(--bg-light);
}

.faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--primary-color);
    flex: 1;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--highlight-color);
    font-weight: 300;
    transition: var(--transition);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(233, 69, 96, 0.1);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Contact Section */
.contact-content {
    max-width: 1200px;
    margin: 0 auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    color: var(--accent-color);
    margin-bottom: 2rem;
    font-size: 1.75rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-item p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.contact-item a {
    color: var(--highlight-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form-container {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.contact-form-container h3 {
    color: var(--accent-color);
    margin-bottom: 2rem;
    font-size: 1.75rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--highlight-color), var(--accent-color));
    color: var(--text-light);
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

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

/* Legal Section */
.legal-content {
    max-width: 1200px;
    margin: 0 auto;
}

.legal-content h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.legal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.legal-item {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.legal-item h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.legal-item ul {
    list-style: none;
    padding-left: 0;
}

.legal-item li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.legal-item li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--highlight-color);
    font-weight: bold;
}

.legal-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.legal-item strong {
    color: var(--accent-color);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
    padding: 4rem 0 2rem;
}

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

.footer-section h3,
.footer-section h4 {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

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

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

.footer-section li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.5rem;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-note {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive Design */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-md);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-stats {
        gap: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

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

    .fulfillment-grid,
    .standards-grid,
    .governance-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .hero {
        padding: 120px 0 80px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .section {
        padding: 60px 0;
    }

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

    .privacy-policy {
        padding: 2rem 1.5rem;
    }

    .standards-list {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .operation-item,
    .stage-item,
    .fulfillment-item,
    .standard-item,
    .governance-item {
        padding: 1.5rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, var(--highlight-color), var(--accent-color));
    color: var(--text-light);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}