@layer tokens, base, components, pages, responsive, utilities;

:root {
    --bg: #fafbf9;
    --panel: rgba(255, 255, 255, 0.86);
    --text: #171717;
    --text-secondary: #434844;
    --muted: #676c68;
    --rule: #d4d8d4;
    --rule-soft: rgba(212, 216, 212, 0.58);
    --shadow: rgba(23, 23, 23, 0.04);
    --accent: #2f615a;
    --accent-strong: #244f4a;
    --accent-soft: rgba(47, 97, 90, 0.09);
    --accent-border: rgba(47, 97, 90, 0.4);
    --text-color: var(--text);
    --secondary-text-color: var(--muted);
    --border-color: var(--rule);
    --border-soft: var(--rule-soft);
    --accent-color: var(--accent);
    --surface-color: #f1f3f1;
    --surface-soft: rgba(238, 242, 239, 0.62);
    --surface-raised: #fcfdfc;
    --shadow-color: var(--shadow);
    --control-active: var(--accent);
    --focus-color: var(--accent-strong);
    --interactive-border-hover: var(--accent-border);
    --type-eyebrow: 0.96rem;
    --type-label: 1rem;
    --type-meta: 1.05rem;
    --type-body: 1.14rem;
    --type-body-large: 1.2rem;
    --type-intro: 1.32rem;
    --type-card-title: 1.45rem;
    --leading-tight: 1.2;
    --leading-meta: 1.6;
    --leading-body: 1.72;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
    --space-8: 64px;
    --radius-control: 8px;
    --radius-card: 10px;
    --radius-inner: 6px;
    --radius-modal: 16px;
    --motion-fast: 180ms;
    --motion-base: 240ms;
    --motion-expand: 380ms;
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 12px;
}

body {
    margin: 0;
    background: #fff;
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

    a {
        color: inherit;
    }
}

:where(a, button, input, select, textarea):focus-visible {
    outline: 2px solid var(--focus-color);
    outline-offset: 3px;
}

.main-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: var(--panel);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--rule-soft);
}

.header-shell {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    width: min(1180px, calc(100vw - 48px));
    margin: 0 auto;
    gap: 12px 24px;
    padding: clamp(14px, 2vw, 20px) 0;
}

.logo {
    text-decoration: none;
    font-size: 1.22rem;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.main-nav {
    margin-left: auto;
    max-width: min(100%, 720px);
}

.main-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px clamp(14px, 1.8vw, 24px);
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    display: inline-block;
    position: relative;
    padding-bottom: 2px;
    color: var(--muted);
    font-size: 1.05rem;
    letter-spacing: 0.04em;
    text-decoration: none;
    transition: color var(--motion-fast) var(--ease-out);
}

.main-nav a::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 1px;
    background: currentColor;
    opacity: 0;
    transition: opacity var(--motion-fast) var(--ease-out);
}

.main-nav a.is-active,
.main-nav a.nav-current,
.main-nav a:hover {
    color: var(--text);
}

.main-nav a.is-active::after,
.main-nav a.nav-current::after,
.main-nav a:hover::after {
    opacity: 1;
}

.main-nav a.is-active::after,
.main-nav a.nav-current::after {
    background: var(--accent);
}

.main-nav a.nav-disabled {
    color: var(--muted);
    opacity: 0.55;
    pointer-events: none;
}

.main-nav a.nav-disabled::after {
    opacity: 0;
}

.logo:focus-visible,
.main-nav a:focus-visible,
.contact-links a:focus-visible {
    outline: 2px solid var(--focus-color);
    outline-offset: 4px;
}

.contact-links {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: clamp(10px, 1.6vw, 20px);
    min-width: 0;
}

.contact-links a {
    flex: 0 1 auto;
    padding-bottom: 2px;
    border-bottom: 1px solid var(--rule);
    color: var(--text-secondary);
    font-size: clamp(1rem, 1.08vw, 1.14rem);
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
    transition:
        border-color var(--motion-fast) var(--ease-out),
        color var(--motion-fast) var(--ease-out);
}

.contact-links a:hover {
    border-color: var(--accent);
    color: var(--accent-strong);
}

.contact-links .disabled-link {
    border-bottom-color: transparent;
    color: var(--muted);
    pointer-events: none;
}

.main-footer {
    padding: 0 0 32px;
}

.copyright {
    margin: 0;
    padding-top: 18px;
    border-top: 1px solid var(--rule-soft);
    color: var(--muted);
    font-size: 0.95rem;
    text-align: center;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

@media (max-width: 920px) {
    .header-shell {
        width: min(100vw - 32px, 1180px);
    }
}

@media (max-width: 768px) {
    .main-nav {
        width: 100%;
        max-width: none;
        margin-left: 0;
    }

    .main-nav ul {
        justify-content: flex-start;
        gap: 10px 16px;
    }
}

@media (max-width: 720px) {
    .contact-links {
        flex-wrap: wrap;
        gap: 8px 14px;
        padding-inline: 6px;
    }

    .contact-links a {
        font-size: 1rem;
        line-height: 1.35;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .main-nav a,
    .main-nav a::after,
    .contact-links a {
        transition: none;
    }
}