/* =========================================================================
   Global chrome: header, category nav, ticker, drawer, footer, bottom nav.
   ========================================================================= */

/* ---------- Header ------------------------------------------------------ */

.site-header {
    position: sticky;
    inset-block-start: 0;
    z-index: var(--z-header);
    background: var(--bg);
    border-block-end: 1px solid var(--border);
    transition: box-shadow var(--transition);
}

/* Condensed once the reader has moved past the masthead. Only the shadow and
   the brand size change, so the header never jumps height and shifts layout. */
.site-header.is-condensed {
    box-shadow: var(--shadow-sm);
}

.header-top {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding-block: var(--space-3);
}

.brand {
    display: flex;
    align-items: baseline;
    gap: 1px;
    font-family: var(--font-display);
    font-size: var(--fs-lg);
    font-weight: 700;
    letter-spacing: -0.03em;
    transition: font-size var(--transition);
}

.brand span {
    color: var(--accent);
}

.is-condensed .brand {
    font-size: var(--fs-md);
}

.header-date {
    display: none;
    font-family: var(--font-ui);
    font-size: var(--fs-xs);
    color: var(--text-muted);
}

@media (min-width: 768px) {
    .header-date {
        display: block;
    }
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin-inline-start: auto;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: background var(--transition), color var(--transition);
}

.icon-btn:hover {
    background: var(--surface);
    color: var(--text);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Only one of these shows at a time. */
[data-theme='dark'] .icon-sun,
:root:not([data-theme='light']) .icon-sun {
    display: none;
}

.icon-moon {
    display: none;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme='light']) .icon-moon {
        display: block;
    }
}

[data-theme='dark'] .icon-moon {
    display: block;
}

[data-theme='light'] .icon-sun {
    display: block;
}

/* ---------- Category nav ------------------------------------------------ */

.header-nav {
    display: none;
    border-block-start: 1px solid var(--border);
}

@media (min-width: 1024px) {
    .header-nav {
        display: block;
    }
}

.nav-list {
    display: flex;
    align-items: stretch;
    gap: var(--space-4);
    list-style: none;
    padding: 0;
    margin: 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.nav-list::-webkit-scrollbar {
    display: none;
}

.nav-list a {
    display: flex;
    align-items: center;
    padding-block: var(--space-2);
    font-family: var(--font-ui);
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
    border-block-end: 2px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}

.nav-list a:hover {
    color: var(--text);
}

.nav-list a[aria-current='page'] {
    color: var(--text);
    border-block-end-color: var(--accent);
}

/* ---------- Breaking ticker --------------------------------------------
   Rendered only when an unexpired breaking article exists, so it never sits
   there empty pretending to be live.
   ----------------------------------------------------------------------- */

.ticker {
    background: var(--accent-soft);
    border-block-start: 1px solid var(--border);
    overflow: hidden;
}

.ticker .container {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding-block: var(--space-2);
}

.ticker-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    flex: 0 0 auto;
    font-family: var(--font-ui);
    font-size: var(--fs-xs);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--accent);
}

.pulse {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%      { opacity: 0.35; transform: scale(0.8); }
}

.ticker-items {
    display: flex;
    gap: var(--space-5);
    min-width: 0;
    overflow-x: auto;
    scrollbar-width: none;
    font-size: var(--fs-sm);
}

.ticker-items::-webkit-scrollbar {
    display: none;
}

.ticker-items a {
    white-space: nowrap;
    font-weight: 600;
}

.ticker-items a:hover {
    color: var(--accent);
}

/* ---------- Mobile drawer ---------------------------------------------- */

.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: var(--z-drawer);
    background: rgba(16, 21, 28, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}

.drawer-backdrop.is-open {
    opacity: 1;
    visibility: visible;
}

.drawer {
    position: fixed;
    inset-block: 0;
    inset-inline-start: 0;
    z-index: var(--z-drawer);
    width: min(88vw, 340px);
    background: var(--bg);
    border-inline-end: 1px solid var(--border);
    transform: translateX(-100%);
    transition: transform var(--transition);
    overflow-y: auto;
    overscroll-behavior: contain;
}

.drawer.is-open {
    transform: translateX(0);
}

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3);
    border-block-end: 1px solid var(--border);
}

.drawer-nav {
    list-style: none;
    margin: 0;
    padding: var(--space-2) 0;
}

.drawer-nav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    min-height: 44px;
    padding: var(--space-2) var(--space-3);
    font-weight: 600;
}

.drawer-nav a:hover {
    background: var(--surface);
}

.drawer-nav .count {
    font-family: var(--font-ui);
    font-size: var(--fs-xs);
    font-weight: 400;
    color: var(--text-muted);
}

@media (min-width: 1024px) {
    .drawer,
    .drawer-backdrop,
    .menu-toggle {
        display: none;
    }
}

/* ---------- Search overlay ---------------------------------------------- */

.search-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-overlay);
    background: rgba(16, 21, 28, 0.55);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}

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

.search-panel {
    max-width: 640px;
    margin: 10vh auto 0;
    background: var(--bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.search-input-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    border-block-end: 1px solid var(--border);
}

.search-input-row input {
    flex: 1;
    min-height: 44px;
    padding: 0 var(--space-2);
    background: none;
    border: none;
    font-size: var(--fs-md);
}

.search-input-row input:focus {
    outline: none;
}

.search-results {
    max-height: 60vh;
    overflow-y: auto;
}

.search-results a {
    display: block;
    padding: var(--space-3);
    border-block-end: 1px solid var(--border);
}

.search-results a:hover,
.search-results a:focus-visible {
    background: var(--surface);
}

.search-results .title {
    font-weight: 600;
    margin-block-end: var(--space-1);
}

.search-hint {
    padding: var(--space-5) var(--space-3);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--fs-sm);
}

/* ---------- Footer ------------------------------------------------------ */

.site-footer {
    margin-block-start: var(--space-8);
    padding-block: var(--space-6) var(--space-5);
    background: var(--surface);
    border-block-start: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    gap: var(--space-5);
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
        gap: var(--space-6);
    }
}

.footer-grid h3 {
    font-family: var(--font-ui);
    font-size: var(--fs-xs);
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-block-end: var(--space-3);
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2) var(--space-3);
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: var(--fs-sm);
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-about {
    font-size: var(--fs-sm);
    color: var(--text-muted);
    max-width: 46ch;
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-block-start: var(--space-5);
    padding-block-start: var(--space-3);
    border-block-start: 1px solid var(--border);
    font-size: var(--fs-xs);
    color: var(--text-muted);
}

/* ---------- Mobile bottom nav ------------------------------------------- */

.bottom-nav {
    position: fixed;
    inset-block-end: 0;
    inset-inline: 0;
    z-index: var(--z-header);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: var(--bg);
    border-block-start: 1px solid var(--border);
    padding-block-end: env(safe-area-inset-bottom);
}

.bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-height: 56px;
    font-family: var(--font-ui);
    font-size: 10px;
    font-weight: 600;
    color: var(--text-muted);
}

.bottom-nav a[aria-current='page'] {
    color: var(--accent);
}

.bottom-nav svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}

@media (min-width: 1024px) {
    .bottom-nav {
        display: none;
    }
}

/* Clear the fixed bar so the last line of content is never hidden. */
@media (max-width: 1023px) {
    body {
        padding-block-end: 56px;
    }
}