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

/* Color Variables */
:root {
    --primary-color: #007E6E;
    --secondary-color: #73AF6F;
    --accent-color: #D7C097;
    --light-accent: #E7DEAF;
    --white: #ffffff;
    --black: #2c2c2c;
    --light-gray: #f8f9fa;
    --medium-gray: #4e545a;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    background-color: var(--black);
}

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

/* Header */
.header {
    background-color: var(--white);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.nav-brand a {
    text-decoration: none;
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 700;
}

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

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

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

/* Mobile Menu Toggle (Hamburger) */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px 0 10px 10px;
    position: relative;
    z-index: 1001;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background-color: var(--black);
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 7px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

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

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    width: 100%;
    height: 100%;
    background-color: var(--white);
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.mobile-menu-overlay.active .mobile-menu {
    transform: translateY(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    padding: 1rem 2rem;
}

.mobile-menu-header h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 700;
}

.mobile-nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.mobile-nav-link {
    text-decoration: none;
    color: var(--black);
    font-size: 1.5rem;
    font-weight: 600;
    padding: 1rem 2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    text-align: center;
    min-width: 200px;
}

.mobile-nav-link:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

body.mobile-menu-open {
    overflow: hidden;
}

/* Skip to main content link - ACCESSIBILITY */
.skip-to-main {
    position: absolute;
    top: -42px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: var(--white);
    padding: 8px 12px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    z-index: 1100;
    transition: top 0.3s ease;
}

.skip-to-main:focus {
    top: 18px;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #006b5c;
    transform: translateY(-2px);
}

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
    font-weight: 700;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.2rem;
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* Footer */
.footer {
    background-color: var(--black);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 2rem;
}

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

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.footer-column h4 {
    color: var(--light-accent);
    margin-bottom: 1rem;
}

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

.footer-column ul li {
    margin-bottom: 0.5rem;
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 1rem;
    text-align: center;
    color: #ccc;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

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

    .hero-title {
        font-size: 1.8rem;
    }

    .nav {
        padding: 1rem 1rem;
    }

    .mobile-menu-header {
        padding: 1rem;
    }

    .mobile-nav-link {
        font-size: 1.3rem;
        min-width: 180px;
    }
    
    .btn {
        width: 100%;
        max-width: 200px;
        text-align: center;
    }
    
    .section-title {
        font-size: 2rem;
    }

    .skip-to-main {
        font-size: 0.8rem;
    }
}

/* Focus Management Styles */

/* Remove default browser focus outline */
*:focus:not(:focus-visible) {
    outline: none;
}

/* Enhanced focus for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Skip link focus styles */
.skip-to-main:focus-visible {
    outline: 3px solid var(--white);
    outline-offset: 2px;
    box-shadow: 0 0 0 5px var(--primary-color);
}

/* Navigation link focus styles */
.nav-link:focus-visible {
    background-color: rgba(0, 126, 110, 0.1);
    border-radius: 4px;
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    padding: 8px 12px;
    margin: -8px -12px;
}

/* Mobile menu toggle focus */
.mobile-menu-toggle:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 4px;
    border-radius: 4px;
    background-color: rgba(0, 126, 110, 0.1);
}

/* Brand logo focus styles */
.nav-brand h1 a:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 4px;
    border-radius: 4px;
}

/* Mobile navigation link focus styles */
.mobile-nav-link:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(0, 126, 110, 0.2);
    transform: translateY(-2px) scale(1.02);
}

/* Button focus styles */
.btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 126, 110, 0.3);
}

.btn-primary:focus-visible {
    outline: 2px solid var(--white);
    outline-offset: 3px;
    box-shadow: 0 0 0 5px var(--primary-color), 0 4px 15px rgba(0, 126, 110, 0.3);
}

.btn-secondary:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
    background-color: rgba(0, 126, 110, 0.1);
}

/* Footer link focus styles */
.footer-column ul li a:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
    background-color: rgba(215, 192, 151, 0.1);
    padding: 4px 8px;
    margin: -4px -8px;
    border-radius: 4px;
}


/* Focus trap helpers for modals */
.focus-trap-start,
.focus-trap-end {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
}

/* Mobile menu focus management */
.mobile-menu-overlay.active {
    contain: layout style;
}

/* High contrast mode support */
@media (prefers-contrast: more) {
    *:focus-visible {
        outline: 3px solid;
        outline-offset: 2px;
    }

    .btn:focus-visible {
        outline: 3px solid;
        outline-offset: 3px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *:focus-visible,
    .btn:focus-visible,
    .mobile-nav-link:focus-visible {
        transition: none;
        transform: none;
    }

    /* Still provide visual feedback, just without motion */
    .btn:focus-visible {
        box-shadow: 0 0 0 3px var(--primary-color);
    }
}

/* Focus indicators for interactive elements that might not be obvious */
[tabindex]:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Ensure focus is visible on interactive images */
img[tabindex]:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
}