:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --footer-bg: #000000;
    --footer-text: #ffffff;
    --border-color: rgba(0, 0, 0, 0.15);
    --border-light: rgba(0, 0, 0, 0.08);
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    --font-serif: Georgia, serif;
    --transition-smooth: cubic-bezier(0.25, 1, 0.5, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*:focus-visible {
    outline: 2px solid var(--text-color);
    outline-offset: 4px;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 20px;
    background: var(--text-color);
    color: var(--bg-color);
    padding: 10px 20px;
    z-index: 999;
    font-weight: 600;
    text-decoration: none;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 20px;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.intro__location {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #666;
    border-left: 2px solid var(--text-color);
    padding-left: 8px;
}

/* --- Navigation --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    width: 100%;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-light);
    position: relative;
    z-index: 100;
}

.navbar__logo-img {
    height: auto;
    width: 50px;
    display: block;
}

.navbar__links {
    display: none;
    flex-direction: column;
    list-style: none;
    gap: 20px;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-color);
    padding: 20px;
    border-bottom: 1px solid var(--border-light);
    will-change: transform, opacity;
}

.navbar__links.active {
    display: flex;
}

.navbar__link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: opacity 0.2s ease;
}

.navbar__link:hover {
    opacity: 0.7;
}

.navbar__link--active {
    border-bottom: 2px solid var(--text-color);
    padding-bottom: 2px;
}

.navbar__status {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: none;
}

/* Mobile nav toggle */
.navbar__toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.navbar__toggle-icon {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-color);
    position: relative;
    transition: background 0.2s ease;
}

.navbar__toggle-icon::before,
.navbar__toggle-icon::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 2px;
    background: var(--text-color);
    left: 0;
    transition: transform 0.2s ease;
}
.navbar__toggle-icon::before { top: -8px; }
.navbar__toggle-icon::after { bottom: -8px; }

[aria-expanded="true"] .navbar__toggle-icon {
    background: transparent;
}
[aria-expanded="true"] .navbar__toggle-icon::before {
    transform: translateY(8px) rotate(45deg);
}
[aria-expanded="true"] .navbar__toggle-icon::after {
    transform: translateY(-8px) rotate(-45deg);
}

/* --- Footer --- */
.footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 60px 20px 20px 20px;
}

.footer__main {
    display: flex;
    flex-direction: column;
    gap: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    padding-bottom: 40px;
}

.footer__block h3 {
    font-size: 1.8rem;
    font-weight: 600;
    letter-spacing: -0.5px;
    margin-bottom: 20px;
}

.footer__email {
    display: inline-flex;
    align-items: center;
    color: var(--footer-text);
    text-decoration: none;
    font-weight: 500;
    gap: 8px;
}

.footer__email-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: 1px solid var(--footer-text);
    border-radius: 50%;
    font-size: 0.8rem;
}

.footer__links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__links a {
    color: var(--footer-text);
    text-decoration: none;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.footer__detail {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.footer__block--legal {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}

.footer__legal-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer__socials {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.footer__socials a {
    color: var(--footer-text);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
}

.footer__socials a:hover {
    text-decoration: underline;
}

.footer__bottom {
    padding-top: 40px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* --- Media Queries --- */
@media (min-width: 768px) {
    .navbar {
        padding: 30px 50px;
        height: 100px;
    }

    .navbar__toggle {
        display: none;
    }

    .navbar__links {
        display: flex;
        flex-direction: row;
        position: static;
        width: auto;
        padding: 0;
        border: none;
        gap: 25px;
    }

    .navbar__status {
        display: block;
    }

    .footer {
        padding: 100px 50px 30px 50px;
    }

    .footer__main {
        display: grid;
        grid-template-columns: 4fr 2fr 3fr 3fr;
        gap: 30px;
        padding-bottom: 60px;
    }

    .footer__block--legal {
        align-items: flex-end;
        text-align: right;
    }
}

/* Reduced Motion fallback */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto !important;
    }
    *, ::before, ::after {
        animation-delay: -1ms !important;
        animation-duration: 1ms !important; /* >0 for parser requirements */
        animation-iteration-count: 1 !important;
        transition-duration: 0s !important;
        transition-delay: 0s !important;
    }
}