:root {
    --clr-brand: #87c145;
    --clr-brand-dark: #6fa832;
    --clr-brand-deeper: #5a8c2a;
    --clr-brand-tint: rgba(135, 193, 69, 0.1);
    --clr-brand-glow: rgba(135, 193, 69, 0.3);
    --clr-text: #1a1a1a;
    --clr-text-muted: #555;
    --clr-surface: rgba(255, 255, 255, 0.96);
    --clr-border: rgba(0, 0, 0, 0.07);
    --clr-shadow: rgba(0, 0, 0, 0.09);
    --font-nav: "Segoe UI", system-ui, -apple-system, sans-serif;
    --radius-pill: 50px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-height: 64px;
    --nav-padding-x: 24px;
}

.site-header {
    position: absolute;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 12px 16px;
    pointer-events: none;
}

.nav {
    pointer-events: all;
    background: var(--clr-surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-pill);
    box-shadow: 0 4px 24px var(--clr-shadow);
    transition: box-shadow var(--transition);
    font-family: var(--font-nav);
    margin-left: 90px;
    margin-right: 90px;
    margin-top: 10px;
}

.nav.is-scrolled {
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.14);
}

.nav__container {
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto;
    height: auto;
    padding: 12px 18px;
    gap: 0;
    align-items: center;
    width: 100%;
}

.nav__brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    border-radius: var(--radius-sm);
    outline-offset: 4px;
}

.nav__logo {
    display: block;
    height: 36px;
    width: auto;
    transition:
        opacity var(--transition),
        transform var(--transition);
}

.nav__brand:hover .nav__logo {
    opacity: 0.85;
    transform: scale(1.03);
}

.nav__list {
    display: flex;
    align-items: center;
    gap: 2px;
    list-style: none;
    margin: 0 auto;
    padding: 0;
}

.nav__item {
    position: relative;
}

.nav__link,
.nav__trigger {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--clr-text-muted);
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    transition:
        color var(--transition),
        background var(--transition),
        transform var(--transition);

    background: none;
    border: none;
    font-family: inherit;
    line-height: 1;
}

.nav__link:hover,
.nav__trigger:hover,
.nav__trigger[aria-expanded="true"] {
    color: var(--clr-brand);
    background: var(--clr-brand-tint);
}

.nav__link--active {
    color: var(--clr-brand);
    font-weight: 600;
}

.nav__link:focus-visible,
.nav__trigger:focus-visible {
    outline: 2px solid var(--clr-brand);
    outline-offset: 2px;
}

.nav__chevron {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    transition: transform var(--transition);
}

.nav__trigger[aria-expanded="true"] .nav__chevron {
    transform: rotate(-135deg) translateY(-2px);
}

.nav__dropdown {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    min-width: 200px;
    background: var(--clr-surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 32px var(--clr-shadow);
    list-style: none;
    padding: 8px;
    margin: 0;
    z-index: 100;

    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
        opacity var(--transition),
        transform var(--transition),
        visibility var(--transition);
}

.nav__dropdown.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
    transform: translateX(-50%) translateY(0);
}

.nav__dropdown--wide {
    min-width: 280px;
    left: 0;
    transform: translateY(-8px);
}

.nav__dropdown--wide.is-open {
    transform: translateY(0);
}

.nav__dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--clr-text-muted);
    text-decoration: none;
    transition:
        color var(--transition),
        background var(--transition),
        transform var(--transition);
}

.nav__dropdown-item:hover {
    background: var(--clr-brand-tint);
    color: var(--clr-brand);
    transform: translateX(4px);
}

.nav__dropdown-item:focus-visible {
    outline: 2px solid var(--clr-brand);
    outline-offset: -2px;
    border-radius: var(--radius-sm);
}

.nav__dropdown-icon {
    flex-shrink: 0;
    color: var(--clr-brand);
    opacity: 0.7;
    transition: opacity var(--transition);
}

.nav__dropdown-item:hover .nav__dropdown-icon {
    opacity: 1;
}

.nav__dropdown-group {
    margin-bottom: 4px;
}

.nav__dropdown-group > ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav__dropdown-label {
    display: block;
    padding: 8px 12px 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--clr-brand);
    border-bottom: 1px solid rgba(135, 193, 69, 0.2);
    margin-bottom: 4px;
}

.nav__dropdown-group + .nav__dropdown-group {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--clr-border);
}

.nav__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-pill);
    background: linear-gradient(
        135deg,
        var(--clr-brand),
        var(--clr-brand-dark)
    );
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    text-decoration: none;
    box-shadow: 0 4px 14px var(--clr-brand-glow);
    transition:
        background var(--transition),
        box-shadow var(--transition),
        transform var(--transition);
}

.nav__cta:hover {
    background: linear-gradient(
        135deg,
        var(--clr-brand-dark),
        var(--clr-brand-deeper)
    );
    box-shadow: 0 6px 20px rgba(135, 193, 69, 0.45);
    transform: translateY(-1px);
    color: #fff;
}

.nav__cta:focus-visible {
    outline: 2px solid var(--clr-brand);
    outline-offset: 3px;
}

.nav__cta:active {
    transform: translateY(0);
}

.nav__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    margin-left: auto;
    border: none;
    background: var(--clr-brand-tint);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 8px;
    transition: background var(--transition);
}

.nav__hamburger:hover {
    background: rgba(135, 193, 69, 0.18);
}

.nav__hamburger:focus-visible {
    outline: 2px solid var(--clr-brand);
    outline-offset: 2px;
}

.nav__hamburger-bar {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--clr-text);
    border-radius: 2px;
    transform-origin: center;
    transition:
        transform var(--transition),
        opacity var(--transition);
}

.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 991px) {
    .site-header {
        padding: 10px 12px;
    }

    .nav__container {
        display: grid;
        grid-template-columns: auto 1fr auto;
        grid-template-rows: auto auto;
        align-items: center;
        height: auto;
        padding: 12px 18px;
        gap: 0;
    }

    .nav {
        margin-left: 0;
        margin-right: 0;
    }

    .nav__brand {
        grid-column: 1;
        grid-row: 1;
    }

    .nav__hamburger {
        display: flex;
        grid-column: 3;
        grid-row: 1;
    }

    .nav__cta {
        display: none;
    }

    .nav__list {
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        grid-column: 1 / -1;
        grid-row: 2;
        width: 100%;
        padding: 12px 0 8px;
        margin: 0;
        border-top: 1px solid var(--clr-border);
        margin-top: 10px;
    }

    .nav__list.is-open {
        display: flex;
    }

    .nav__link,
    .nav__trigger {
        width: 100%;
        justify-content: space-between;
        padding: 12px 14px;
        border-radius: var(--radius-sm);
        font-size: 0.95rem;
    }

    .nav__dropdown {
        position: static;
        transform: none !important;
        left: auto !important;
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        visibility: visible;
        pointer-events: none;
        box-shadow: none;
        border: none;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: transparent;
        border-left: 2px solid var(--clr-brand);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        margin-left: 14px;
        padding: 0;
        transition:
            max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
            padding var(--transition);
    }

    .nav__dropdown.is-open {
        max-height: 600px;
        pointer-events: all;
        padding: 6px 0;
    }

    .nav__dropdown-item {
        color: var(--clr-text-muted);
        opacity: 1 !important;
    }

    .nav__dropdown-label {
        color: var(--clr-brand);
    }

    .nav__dropdown--wide {
        left: auto;
        min-width: auto;
    }

    .nav__list::after {
        content: "";
        display: block;
        height: 1px;
        background: var(--clr-border);
        margin: 8px 14px;
    }
}

@keyframes headerSlideDown {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.site-header {
    animation: headerSlideDown 0.45s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}