/* ==========================================================================
   SMAB Volunteer — Shared site header
   File: assets/css/site-header.css
   Depends on: brand-tokens.css
   Scope: .smab-site-header (used on all frontend pages)
   ========================================================================== */

.smab-site-header {
    position: relative;
    z-index: 30;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--smab-s-3) var(--smab-s-5);
    gap: var(--smab-s-4);
}
@media (min-width: 720px) {
    .smab-site-header {
        padding: var(--smab-s-3) var(--smab-s-7);
        gap: var(--smab-s-6);
    }
}

/* -- Brand (logo image + text) -- */
.smab-site-header__brand {
    display: flex;
    align-items: center;
    gap: var(--smab-s-3);
    text-decoration: none;
    color: inherit;
    transition: opacity var(--smab-dur) var(--smab-ease);
    min-width: 0;
    flex-shrink: 0;
}
.smab-site-header__brand:hover { opacity: 0.88; }

.smab-site-header__logo {
    width: 58px;
    height: 58px;
    flex-shrink: 0;
    border-radius: 50%;
    padding: 4px;
    object-fit: contain;
    transition: transform var(--smab-dur) var(--smab-ease);
}
@media (min-width: 720px) {
    .smab-site-header__logo { width: 70px; height: 70px; }
}
.smab-site-header__brand:hover .smab-site-header__logo {
    transform: rotate(-3deg);
}

.smab-site-header__brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    min-width: 0;
}
@media (max-width: 480px) {
    .smab-site-header__brand-text { display: none; }
}

.smab-site-header__brand-name {
    font-family: var(--smab-font-display);
    font-size: var(--smab-fs-sm);
    font-weight: 600;
    letter-spacing: -0.005em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 260px;
}
@media (min-width: 720px) {
    .smab-site-header__brand-name { font-size: var(--smab-fs-base); }
}
[dir="rtl"] .smab-site-header__brand-name { letter-spacing: 0; }

.smab-site-header__brand-sub {
    font-size: var(--smab-fs-xs);
    margin-top: 2px;
    opacity: 0.85;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* -- Center nav (desktop) -- */
.smab-site-header__nav {
    list-style: none;
    margin: 0;
    padding: 0;
    display: none;
    align-items: center;
    gap: 2px;
    flex: 1;
    justify-content: center;
}
@media (min-width: 960px) {
    .smab-site-header__nav { display: flex; }
}

.smab-site-header__nav-link {
    display: inline-flex;
    align-items: center;
    padding: 8px var(--smab-s-4);
    font-family: var(--smab-font-body);
    font-size: var(--smab-fs-sm);
    font-weight: 500;
    text-decoration: none;
    border-radius: 100px;
    position: relative;
    transition: all var(--smab-dur-fast) var(--smab-ease);
}

/* -- Account actions -- */
.smab-site-header__actions {
    display: flex;
    align-items: center;
    gap: var(--smab-s-2);
    flex-shrink: 0;
}

.smab-site-header__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px var(--smab-s-4);
    font-family: var(--smab-font-body);
    font-size: var(--smab-fs-sm);
    font-weight: 500;
    text-decoration: none;
    border-radius: 100px;
    backdrop-filter: blur(4px);
    transition: all var(--smab-dur-fast) var(--smab-ease);
}
@media (max-width: 480px) {
    .smab-site-header__link-label { display: none; }
    .smab-site-header__link { padding: 8px; }
}

/* -- Hamburger button (mobile only) -- */
.smab-site-header__burger {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--smab-radius);
    cursor: pointer;
    transition: all var(--smab-dur-fast) var(--smab-ease);
}
@media (min-width: 960px) {
    .smab-site-header__burger { display: none; }
}

.smab-site-header__burger-line {
    display: block;
    width: 18px;
    height: 1.5px;
    border-radius: 2px;
    transition: all var(--smab-dur) var(--smab-ease);
    transform-origin: center;
}
.smab-site-header__burger[aria-expanded="true"] .smab-site-header__burger-line:nth-child(1) {
    transform: translateY(5.5px) rotate(45deg);
}
.smab-site-header__burger[aria-expanded="true"] .smab-site-header__burger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.smab-site-header__burger[aria-expanded="true"] .smab-site-header__burger-line:nth-child(3) {
    transform: translateY(-5.5px) rotate(-45deg);
}

/* -- Mobile nav sheet -- */
@media (max-width: 959px) {
    .smab-site-header__nav {
        position: absolute;
        top: 100%;
        inset-inline-start: 0;
        inset-inline-end: 0;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: 0;
        border-bottom: 1px solid;
        box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
        padding: var(--smab-s-3) var(--smab-s-4);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: all var(--smab-dur) var(--smab-ease);
        pointer-events: none;
    }
    .smab-site-header__nav.is-open {
        display: flex;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
    }
    .smab-site-header__nav-link {
        padding: var(--smab-s-3) var(--smab-s-4);
        border-radius: var(--smab-radius);
        font-size: var(--smab-fs-md);
        font-family: var(--smab-font-display);
    }
    .smab-site-header__nav li + li .smab-site-header__nav-link {
        border-top: 1px solid;
    }
}

/* ==========================================================================
   DARK THEME — used on landing page (burgundy hero background)
   ========================================================================== */
.smab-site-header--dark {
    color: var(--smab-cream);
    background: linear-gradient(135deg, var(--smab-burgundy-dark) 0%, var(--smab-burgundy) 60%, var(--smab-burgundy-deep) 100%);
    border-bottom: 1px solid rgba(184, 146, 78, 0.2);
}
/* .smab-site-header--dark .smab-site-header__logo {
    background: radial-gradient(circle at 30% 25%, #FAF6EF, #EDE4D3);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(184, 146, 78, 0.35);
} */
.smab-site-header--dark .smab-site-header__brand-name { color: #fff; }
.smab-site-header--dark .smab-site-header__brand-sub { color: var(--smab-gold-leaf); }
.smab-site-header--dark .smab-site-header__nav-link {
    color: rgba(245, 239, 230, 0.82);
}
.smab-site-header--dark .smab-site-header__nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
}
.smab-site-header--dark .smab-site-header__nav-link.is-current {
    color: var(--smab-burgundy-dark);
    background: var(--smab-gold-leaf);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(184, 146, 78, 0.3);
}
.smab-site-header--dark .smab-site-header__nav-link.is-current:hover {
    background: var(--smab-gold-leaf);
    color: var(--smab-burgundy-dark);
}
.smab-site-header--dark .smab-site-header__link {
    color: var(--smab-gold-leaf);
    border: 1px solid rgba(184, 146, 78, 0.4);
    background: rgba(0, 0, 0, 0.18);
}
.smab-site-header--dark .smab-site-header__link:hover {
    background: var(--smab-gold-leaf);
    color: var(--smab-burgundy-dark);
    border-color: var(--smab-gold-leaf);
}
.smab-site-header--dark .smab-site-header__burger {
    background: rgba(0, 0, 0, 0.18);
    border: 1px solid rgba(184, 146, 78, 0.4);
}
.smab-site-header--dark .smab-site-header__burger:hover {
    background: rgba(184, 146, 78, 0.2);
    border-color: var(--smab-gold-leaf);
}
.smab-site-header--dark .smab-site-header__burger-line {
    background: var(--smab-gold-leaf);
}

/* Dark mobile sheet */
@media (max-width: 959px) {
    .smab-site-header--dark .smab-site-header__nav {
        background: linear-gradient(180deg, var(--smab-burgundy-deep), var(--smab-burgundy-dark));
        border-bottom-color: rgba(184, 146, 78, 0.35);
    }
    .smab-site-header--dark .smab-site-header__nav-link {
        color: rgba(245, 239, 230, 0.82);
        border-top-color: rgba(184, 146, 78, 0.12);
    }
    .smab-site-header--dark .smab-site-header__nav-link:hover {
        color: #fff;
        background: rgba(255, 255, 255, 0.08);
    }
    .smab-site-header--dark .smab-site-header__nav-link.is-current {
        background: rgba(184, 146, 78, 0.15);
        color: var(--smab-gold-leaf);
        box-shadow: none;
    }
    .smab-site-header--dark .smab-site-header__nav-link.is-current:hover {
        background: rgba(184, 146, 78, 0.2);
        color: var(--smab-gold-leaf);
    }
}

/* ==========================================================================
   LIGHT THEME — used on all other pages (cream/light background)
   ========================================================================== */
.smab-site-header--light {
    color: var(--smab-ink);
    background: var(--smab-cream-soft);
    border-bottom: 1px solid var(--smab-line);
}
.smab-site-header--light .smab-site-header__logo {
    background: var(--smab-parchment);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1), 0 0 0 1px var(--smab-line-soft);
}
.smab-site-header--light .smab-site-header__brand-name { color: var(--smab-burgundy-dark); }
.smab-site-header--light .smab-site-header__brand-sub { color: var(--smab-brown); }
.smab-site-header--light .smab-site-header__nav-link {
    color: var(--smab-ink-soft);
}
.smab-site-header--light .smab-site-header__nav-link:hover {
    color: var(--smab-ink);
    background: var(--smab-parchment);
}
.smab-site-header--light .smab-site-header__nav-link.is-current {
    color: #fff;
    background: var(--smab-burgundy);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(139, 35, 50, 0.2);
}
.smab-site-header--light .smab-site-header__nav-link.is-current:hover {
    background: var(--smab-burgundy);
    color: #fff;
}
.smab-site-header--light .smab-site-header__link {
    color: var(--smab-burgundy);
    border: 1px solid var(--smab-line);
    background: var(--smab-cream-soft);
}
.smab-site-header--light .smab-site-header__link:hover {
    background: var(--smab-burgundy);
    color: #fff;
    border-color: var(--smab-burgundy);
}
.smab-site-header--light .smab-site-header__burger {
    background: var(--smab-parchment);
    border: 1px solid var(--smab-line);
}
.smab-site-header--light .smab-site-header__burger:hover {
    background: var(--smab-burgundy);
    border-color: var(--smab-burgundy);
}
.smab-site-header--light .smab-site-header__burger:hover .smab-site-header__burger-line {
    background: #fff;
}
.smab-site-header--light .smab-site-header__burger-line {
    background: var(--smab-burgundy-dark);
}

/* Light mobile sheet */
@media (max-width: 959px) {
    .smab-site-header--light .smab-site-header__nav {
        background: var(--smab-cream);
        border-bottom-color: var(--smab-line);
    }
    .smab-site-header--light .smab-site-header__nav-link {
        color: var(--smab-ink-soft);
        border-top-color: var(--smab-line-soft);
    }
    .smab-site-header--light .smab-site-header__nav-link:hover {
        color: var(--smab-ink);
        background: var(--smab-parchment);
    }
    .smab-site-header--light .smab-site-header__nav-link.is-current {
        background: var(--smab-burgundy);
        color: #fff;
        box-shadow: none;
    }
    .smab-site-header--light .smab-site-header__nav-link.is-current:hover {
        background: var(--smab-burgundy);
        color: #fff;
    }
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    .smab-site-header,
    .smab-site-header__nav,
    .smab-site-header__burger-line,
    .smab-site-header__logo {
        animation: none !important;
        transition: none !important;
    }
}