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

:root {
    --color-primary: #01827D;
    --color-secondary: #ffffff;
    --color-text: #222222;
    --color-text-gray: #666666;
    --color-bg: #ffffff;
    --color-bg-light: #f9fafb;
    --color-accent: #666666;
    --spacing-unit: 1rem;
    --max-width: 1200px;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}

/* Skip Link (WCAG) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-secondary);
    padding: 8px 16px;
    text-decoration: none;
    z-index: 100;
    font-weight: bold;
}

.skip-link:focus {
    top: 0;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

/* Header */
.header {
    background: var(--color-bg);
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-top {
    background: var(--color-bg-light);
    border-bottom: 1px solid #e5e7eb;
    padding: calc(var(--spacing-unit) * 0.5) 0;
}

.header-contact {
    display: flex;
    justify-content: flex-end;
    gap: calc(var(--spacing-unit) * 1.5);
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.875rem;
}

.contact-link:hover,
.contact-link:focus {
    color: var(--color-primary);
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.header-main {
    padding: var(--spacing-unit) 0;
}

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

.nav-brand a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--color-text);
}

.logo-img {
    max-height: 60px;
    width: auto;
    object-fit: contain;
}

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

.logo-subtitle {
    font-size: 0.875rem;
    color: var(--color-text);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-text);
    transition: all 0.3s;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: calc(var(--spacing-unit) * 2);
}

.nav-menu a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover,
.nav-menu a:focus {
    color: var(--color-primary);
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, #016b66 100%);
    color: var(--color-secondary);
    padding: calc(var(--spacing-unit) * 6) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 1;
}

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

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-unit);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 36px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 2px solid;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background: #016b66;
    border-color: #016b66;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(1, 130, 125, 0.3);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
    background: transparent;
    color: var(--color-secondary);
    border-color: transparent;
    outline: 2px solid var(--color-secondary);
    outline-offset: -2px;
}

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

.btn-email:hover,
.btn-email:focus {
    background: #016b66;
    border-color: #016b66;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(1, 130, 125, 0.3);
}

/* Content Sections */
.content-section {
    padding: calc(var(--spacing-unit) * 4) 0;
}

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

.content-section h2 {
    font-size: 2rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    color: #666666;
    text-align: center;
}

.content-section h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-unit);
    margin-top: calc(var(--spacing-unit) * 2);
    color: #666666;
}

.lead {
    font-size: 1.125rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: #4b5563;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
    margin-top: calc(var(--spacing-unit) * 3);
}

.service-card {
    background: var(--color-bg);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.service-image {
    width: 100%;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.service-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

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

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-unit);
    color: var(--color-primary);
    text-align: center;
}

.service-card p {
    margin-bottom: var(--spacing-unit);
    color: var(--color-text-gray);
}

.service-card ul {
    list-style: none;
    padding-left: 0;
}

.service-card li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--color-text-gray);
}

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

/* Two Column Layout */
.two-column-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: calc(var(--spacing-unit) * 3);
    margin-top: calc(var(--spacing-unit) * 2);
}

.column-content h3 {
    margin-top: calc(var(--spacing-unit) * 2);
    color: #666666;
}

.column-content h3:first-child {
    margin-top: 0;
}

.column-content p {
    margin-bottom: var(--spacing-unit);
    color: #4b5563;
}

.info-card {
    background: var(--color-bg);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.info-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-unit);
    color: var(--color-primary);
    margin-top: 0;
}

.info-card p {
    margin-bottom: var(--spacing-unit);
    color: #4b5563;
}

.info-card p:last-child {
    margin-bottom: 0;
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-unit);
    margin-top: calc(var(--spacing-unit) * 2);
}

.benefit-item {
    padding: var(--spacing-unit);
    background: var(--color-bg);
    border-radius: 6px;
    border-left: 4px solid var(--color-primary);
}

.benefit-item h4 {
    font-size: 1.125rem;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
    color: #666666;
}

.benefit-item p {
    font-size: 0.875rem;
    color: var(--color-text-gray);
    margin: 0;
}

/* CTA Section */
.cta-buttons {
    display: flex;
    gap: var(--spacing-unit);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: calc(var(--spacing-unit) * 2);
}

/* Footer */
.footer {
    background: var(--color-primary);
    color: var(--color-secondary);
    padding: calc(var(--spacing-unit) * 4) 0 calc(var(--spacing-unit) * 2);
    margin-top: calc(var(--spacing-unit) * 4);
}

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

.footer-section h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-unit);
    color: var(--color-secondary);
}

.footer-section p {
    margin-bottom: var(--spacing-unit);
    color: var(--color-secondary);
    font-size: 0.875rem;
}

.footer-section a {
    color: var(--color-secondary);
    text-decoration: none;
}

.footer-section a:hover,
.footer-section a:focus {
    color: var(--color-secondary);
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

.footer-logo-img {
    max-height: 60px;
    width: auto;
    margin-bottom: var(--spacing-unit);
    filter: brightness(0) invert(1);
}

.footer-nav ul {
    list-style: none;
    padding-left: 0;
}

.footer-nav li {
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.footer-services {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-secondary);
}

.footer-nav a {
    color: var(--color-secondary);
    text-decoration: none;
}

.footer-nav a:hover,
.footer-nav a:focus {
    color: var(--color-secondary);
    opacity: 0.8;
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

.footer-copyright {
    text-align: center;
    padding-top: calc(var(--spacing-unit) * 2);
    border-top: 1px solid var(--color-secondary);
    color: var(--color-secondary);
    font-size: 0.875rem;
}

.footer-credits {
    text-align: center;
    padding-top: calc(var(--spacing-unit) * 0.5);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.75rem;
    margin-top: calc(var(--spacing-unit) * 0.5);
}

.footer-credits a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: underline;
    transition: color 0.3s ease;
}

.footer-credits a:hover {
    color: var(--color-secondary);
}

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

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: var(--spacing-unit);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

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

    .two-column-layout {
        grid-template-columns: 1fr;
    }

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

    .header-contact {
        justify-content: center;
    }
}

@media (max-width: 991px) {
    .two-column-layout {
        grid-template-columns: 1fr;
    }
}