/* ==========================================================================
   ELLS — components.css
   Reusable pieces meant to be shared across every page of the site:
   header/navigation, buttons, cards, and the footer.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Header & navigation
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-ivory);
    border-bottom: 1px solid var(--color-line);
    transition: box-shadow var(--transition-base);
}

.site-header.is-scrolled {
    box-shadow: 0 1px 0 var(--color-line-strong);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    padding-block: var(--space-sm);
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.brand-mark {
    flex-shrink: 0;
    width: 2.75rem;
    height: 2.75rem;
    object-fit: cover;
}

.footer-logo {
    width: 3.5rem;
    height: 3.5rem;
    object-fit: cover;
    margin-bottom: var(--space-sm);
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand-name {
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: var(--fs-lg);
    letter-spacing: 0.01em;
}

.brand-sub {
    font-size: 0.6875rem;
    color: var(--color-muted);
    letter-spacing: 0.01em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link {
    position: relative;
    display: inline-block;
    padding-block: var(--space-2xs);
    font-size: var(--fs-base);
    font-variant: small-caps;
    letter-spacing: 0.02em;
    color: var(--color-ink-soft);
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 1px;
    background: var(--color-burgundy);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
    transform: scaleX(1);
}

.nav-link[aria-current="page"] {
    color: var(--color-ink);
}

/* Hamburger toggle (mobile only — shown via responsive.css) */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 2.25rem;
    height: 2.25rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav-toggle-bar {
    width: 100%;
    height: 2px;
    background: var(--color-ink);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   2. Buttons & text links
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-size: var(--fs-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.btn-primary {
    background: var(--color-burgundy);
    color: #fff;
    border-color: var(--color-burgundy);
}

.btn-primary:hover {
    background: var(--color-burgundy-deep);
    border-color: var(--color-burgundy-deep);
}

.btn-outline {
    background: transparent;
    color: var(--color-ink);
    border-color: var(--color-ink);
}

.btn-outline:hover {
    background: var(--color-ink);
    color: var(--color-ivory);
}

.btn-lg {
    padding: 0.9rem 2rem;
    font-size: var(--fs-md);
}

.nav-cta {
    padding: 0.55rem 1.25rem;
    font-size: var(--fs-xs);
    flex-shrink: 0;
}

/* Inverted button for use on the burgundy Join CTA background */
.join-cta .btn-primary {
    background: #fff;
    color: var(--color-burgundy);
    border-color: #fff;
}

.join-cta .btn-primary:hover {
    background: var(--color-ivory-deep);
}

.text-link {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    font-size: var(--fs-sm);
    color: var(--color-burgundy);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-fast);
}

.text-link:hover {
    border-color: var(--color-burgundy);
}

/* --------------------------------------------------------------------------
   3. Activity cards (What We Do)
   -------------------------------------------------------------------------- */
.activity-card {
    border-top: 2px solid var(--color-burgundy);
    padding-top: var(--space-md);
}

.activity-icon {
    display: inline-flex;
    width: 2.75rem;
    height: 2.75rem;
    color: var(--color-burgundy);
    margin-bottom: var(--space-sm);
}

.activity-icon svg {
    width: 100%;
    height: 100%;
}

.activity-card h3 {
    font-size: var(--fs-md);
}

.activity-card p {
    font-size: var(--fs-sm);
    margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   4. Event cards
   -------------------------------------------------------------------------- */
.event-card {
    display: flex;
    gap: var(--space-md);
    border: 1px solid var(--color-line);
    background: var(--color-white);
    padding: var(--space-md);
}

.event-date {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 4rem;
    border-right: 1px solid var(--color-line);
    padding-right: var(--space-md);
}

.event-day {
    font-family: var(--font-serif);
    font-size: var(--fs-xl);
    font-weight: 600;
    color: var(--color-burgundy);
    line-height: 1;
}

.event-month {
    font-size: var(--fs-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.event-title {
    font-size: var(--fs-md);
    margin-bottom: var(--space-3xs);
}

.event-desc {
    font-size: var(--fs-sm);
}

.event-venue {
    font-size: var(--fs-xs);
    color: var(--color-muted);
    margin-bottom: var(--space-2xs);
}

/* --------------------------------------------------------------------------
   5. Publication cards (Student Voices)
   -------------------------------------------------------------------------- */
.pub-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid var(--color-line);
    background: var(--color-white);
    padding: var(--space-md);
}

.pub-category {
    font-size: var(--fs-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-burgundy);
    margin-bottom: var(--space-2xs);
}

.pub-title {
    font-size: var(--fs-md);
    margin-bottom: var(--space-3xs);
}

.pub-author {
    font-size: var(--fs-xs);
    color: var(--color-muted);
    margin-bottom: var(--space-sm);
}

.pub-excerpt {
    font-size: var(--fs-sm);
    flex-grow: 1;
}

/* --------------------------------------------------------------------------
   6. Gallery items
   -------------------------------------------------------------------------- */
.gallery-item {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border: 1px solid var(--color-line);
    background: var(--color-ivory-deep);
    margin: 0;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.04);
}

.gallery-item figcaption {
    position: absolute;
    inset: auto 0 0 0;
    background: rgba(33, 29, 26, 0.75);
    color: #fff;
    font-size: var(--fs-xs);
    padding: var(--space-2xs) var(--space-xs);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.gallery-item:hover figcaption,
.gallery-item:focus-within figcaption {
    transform: translateY(0);
}

/* Fallback shown by main.js if a gallery image fails to load */
.gallery-item.img-fallback img {
    display: none;
}

.gallery-item.img-fallback::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(135deg,
            var(--color-ivory-deep),
            var(--color-ivory-deep) 10px,
            var(--color-line) 10px,
            var(--color-line) 11px);
}

.gallery-item.img-fallback::after {
    content: attr(data-label);
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-sm);
    font-size: var(--fs-xs);
    color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   7. Footer
   -------------------------------------------------------------------------- */
.site-footer {
    background: var(--color-ink);
    color: var(--color-ivory);
    padding-block: var(--space-2xl) var(--space-lg);
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-title {
    font-family: var(--font-serif);
    font-size: var(--fs-md);
    color: #fff;
    margin-bottom: var(--space-2xs);
}

.site-footer p {
    color: rgba(250, 246, 238, 0.7);
}

.footer-links h3,
.footer-social h3 {
    font-family: var(--font-sans);
    font-size: var(--fs-sm);
    font-weight: 600;
    color: #fff;
    margin-bottom: var(--space-sm);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
}

.footer-links a {
    font-size: var(--fs-sm);
    color: rgba(250, 246, 238, 0.75);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: #fff;
}

.social-icons {
    display: flex;
    gap: var(--space-sm);
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: rgba(250, 246, 238, 0.85);
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

.social-icon:hover {
    border-color: #fff;
    color: #fff;
}

.social-icon svg {
    width: 1.1rem;
    height: 1.1rem;
}

.footer-bottom {
    padding-top: var(--space-lg);
    font-size: var(--fs-xs);
    color: rgba(250, 246, 238, 0.55);
}

.footer-meta {
    margin-top: var(--space-3xs);
    margin-bottom: 0;
}