/* ============================================================
   Canvas Signature Heritage — Navigation
   csh-navigation.css
   ============================================================ */

/* ─────────────────────────────────────────────
   Header
───────────────────────────────────────────── */
.csh-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 0;
    transition: background 0.5s var(--ease-smooth), padding 0.4s var(--ease-smooth), box-shadow 0.4s;
    /* Transparent over hero */
    background: transparent;
}

/* Scrolled state — set by JS */
.csh-header.is-scrolled {
    background: var(--csh-navy);
    box-shadow: 0 2px 30px rgba(0,0,0,0.2);
}

/* Opaque by default on non-hero pages */
.csh-header.is-opaque {
    background: var(--csh-navy);
}

.csh-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 90px;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 48px;
    gap: 32px;
    transition: height 0.4s var(--ease-smooth);
}

.csh-header.is-scrolled .csh-header__inner {
    height: 70px;
}

/* ─────────────────────────────────────────────
   Logo
───────────────────────────────────────────── */
.csh-header__logo {
    flex-shrink: 0;
}

.csh-header__logo a img,
.csh-header__logo .custom-logo {
    height: 44px;
    width: auto;
    display: block;
}

.csh-header.is-scrolled .csh-header__logo .custom-logo {
    height: 36px;
}

.csh-header__wordmark {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    gap: 2px;
}

.csh-header__wordmark-main {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: 1.15rem;
    letter-spacing: 0.08em;
    color: #fff;
    text-transform: uppercase;
}

.csh-header__wordmark-sub {
    font-family: var(--font-sans);
    font-size: 0.6rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--csh-gold);
}

/* ─────────────────────────────────────────────
   Primary Nav
───────────────────────────────────────────── */
.csh-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

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

.csh-nav__list > li {
    position: relative;
}

.csh-nav__link {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 400;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.85);
    padding: 0 18px;
    height: 90px;
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.3s;
    position: relative;
}

.csh-header.is-scrolled .csh-nav__link {
    height: 70px;
}

.csh-nav__link::after {
    content: '';
    position: absolute;
    bottom: 22px;
    left: 18px;
    right: 18px;
    height: 1px;
    background: var(--csh-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--ease-smooth);
}

.csh-nav__list > li:hover > .csh-nav__link,
.csh-nav__link.is-active,
.current-menu-item > .csh-nav__link,
.current-menu-ancestor > .csh-nav__link {
    color: #fff;
}

.csh-nav__list > li:hover > .csh-nav__link::after,
.current-menu-item > .csh-nav__link::after,
.current-menu-ancestor > .csh-nav__link::after {
    transform: scaleX(1);
}

/* Chevron icon */
.csh-nav__chevron {
    width: 10px;
    height: 10px;
    position: relative;
    flex-shrink: 0;
}

.csh-nav__chevron::before,
.csh-nav__chevron::after {
    content: '';
    position: absolute;
    background: currentColor;
    border-radius: 1px;
    transition: transform 0.3s;
}

.csh-nav__chevron::before {
    width: 7px;
    height: 1px;
    top: 5px;
    left: 0;
    transform: rotate(45deg) translateX(-1px);
}

.csh-nav__chevron::after {
    width: 7px;
    height: 1px;
    top: 5px;
    right: 0;
    transform: rotate(-45deg) translateX(1px);
}

.csh-nav__list > li:hover > .csh-nav__link .csh-nav__chevron::before {
    transform: rotate(-45deg) translateX(-1px);
}

.csh-nav__list > li:hover > .csh-nav__link .csh-nav__chevron::after {
    transform: rotate(45deg) translateX(1px);
}

/* ─────────────────────────────────────────────
   Dropdown
───────────────────────────────────────────── */
.csh-nav__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background: var(--csh-navy-dark);
    border-top: 2px solid var(--csh-gold);
    padding: 12px 0;
    margin: 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.3s var(--ease-smooth), transform 0.3s var(--ease-smooth), visibility 0.3s;
    box-shadow: var(--shadow-md);
    z-index: 100;
}

.csh-nav__list > li:hover > .csh-nav__dropdown,
.csh-nav__list > li:focus-within > .csh-nav__dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.csh-nav__dropdown li {
    margin: 0;
    padding: 0;
}

.csh-nav__dropdown-link {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.75);
    padding: 10px 24px;
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.2s, background 0.2s, padding-left 0.2s;
}

.csh-nav__dropdown-link:hover,
.csh-nav__dropdown-link:focus-visible,
.current-menu-item > .csh-nav__dropdown-link {
    color: var(--csh-gold);
    background: rgba(255,255,255,0.04);
    padding-left: 32px;
    outline: none;
}

/* ─────────────────────────────────────────────
   Header Actions
───────────────────────────────────────────── */
.csh-header__actions {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-shrink: 0;
}

.csh-header__cta {
    white-space: nowrap;
}

/* ─────────────────────────────────────────────
   Hamburger
───────────────────────────────────────────── */
.csh-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: var(--transition);
}

.csh-hamburger__bar {
    display: block;
    width: 24px;
    height: 1.5px;
    background: #fff;
    border-radius: 1px;
    transition: transform 0.35s var(--ease-smooth), opacity 0.25s, width 0.3s;
    transform-origin: center;
}

.csh-hamburger[aria-expanded="true"] .csh-hamburger__bar:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}
.csh-hamburger[aria-expanded="true"] .csh-hamburger__bar:nth-child(2) {
    opacity: 0;
    width: 0;
}
.csh-hamburger[aria-expanded="true"] .csh-hamburger__bar:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* ─────────────────────────────────────────────
   Mobile Navigation Drawer
───────────────────────────────────────────── */
.csh-mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(380px, 90vw);
    height: 100vh;
    background: var(--csh-navy-dark);
    z-index: 999;
    transform: translateX(100%);
    transition: transform 0.45s var(--ease-smooth);
    overflow-y: auto;
}

.csh-mobile-nav.is-open {
    transform: translateX(0);
}

.csh-mobile-nav__inner {
    padding: 80px 40px 40px;
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

.csh-mobile-nav__close {
    position: absolute;
    top: 20px;
    right: 24px;
    background: transparent;
    border: none;
    color: rgba(255,255,255,0.6);
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    padding: 8px;
    transition: color 0.2s;
}
.csh-mobile-nav__close:hover { color: #fff; }

.csh-mobile-nav__list {
    flex: 1;
    list-style: none;
    padding: 0;
    margin: 0 0 32px;
}

.csh-mobile-nav__list li {
    border-bottom: 1px solid rgba(255,255,255,0.07);
}

.csh-mobile-nav__list a {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.8);
    padding: 16px 0;
    transition: color 0.2s;
}

.csh-mobile-nav__list a:hover { color: var(--csh-gold); }

/* Nested items */
.csh-mobile-nav__list .sub-menu {
    padding-left: 16px;
    list-style: none;
    margin: 0;
    display: none;
}
.csh-mobile-nav__list .sub-menu.is-open { display: block; }
.csh-mobile-nav__list .sub-menu a {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.55);
    padding: 10px 0;
}

.csh-mobile-nav__footer {
    margin-top: auto;
}

/* ─────────────────────────────────────────────
   Overlay
───────────────────────────────────────────── */
.csh-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s, visibility 0.4s;
    backdrop-filter: blur(2px);
}

.csh-overlay.is-visible {
    opacity: 1;
    visibility: visible;
}