/* ==========================================================
   Finance Header
   ========================================================== */

:root {
    --header-topbar-h: 36px;
    --header-main-h:   64px;
    --header-height:   100px; /* updated by JS */
    --header-z:        900;
}

.finance-header {
    --hdr-bg:        var(--color-surface);
    --hdr-topbar-bg: var(--color-background);
    --hdr-border:    var(--border-subtle);
    --hdr-text:      var(--text-primary);
    --hdr-muted:     var(--text-muted);
    --hdr-accent:    var(--brand-primary);
    --hdr-shadow:    var(--shadow-header);
    --hdr-inner:     min(calc(100% - 48px), var(--finance-container, 1280px));
}

.finance-header {
    position: sticky;
    top: 0;
    z-index: var(--header-z);
    background: var(--hdr-bg);
    border-bottom: 1px solid var(--hdr-border);
    transition: box-shadow 0.2s ease, transform 0.3s ease, background 0.2s ease;
    will-change: transform;
}

.finance-header--sticky {
    background: var(--header-sticky-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--hdr-shadow);
}

.finance-header--hidden {
    transform: translateY(-100%);
}

/* ── Top bar ─────────────────────────────────────────────── */

.finance-header__topbar {
    height: var(--header-topbar-h);
    background: var(--hdr-topbar-bg);
    border-bottom: 1px solid var(--hdr-border);
    display: flex;
    align-items: center;
}

.finance-header__topbar-inner {
    width: var(--hdr-inner);
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.finance-header__topbar-update {
    font-size: 0.75rem;
    color: var(--hdr-muted);
    display: flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
    flex-shrink: 0;
}

.finance-header__topbar-update time {
    font-weight: 600;
    color: var(--hdr-text);
}

.finance-header__topbar-list,
.finance-header__topbar-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 20px;
}

.finance-header__topbar-list a,
.finance-header__topbar-nav a {
    font-size: 0.75rem;
    color: var(--hdr-muted);
    text-decoration: none;
    transition: color 0.15s ease;
}

.finance-header__topbar-list a:hover,
.finance-header__topbar-nav a:hover {
    color: var(--hdr-accent);
}

.finance-header__topbar-list a:focus-visible,
.finance-header__topbar-nav a:focus-visible {
    outline: 2px solid var(--hdr-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ── Main header row ─────────────────────────────────────── */

.finance-header__main {
    height: var(--header-main-h);
    display: flex;
    align-items: center;
}

.finance-header__inner {
    width: var(--hdr-inner);
    margin-inline: auto;
    display: flex;
    align-items: center;
    gap: 32px;
}

/* ── Logo ────────────────────────────────────────────────── */

.finance-header__logo {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
    text-decoration: none;
}

.finance-header__logo img,
.finance-header__logo .custom-logo {
    max-height: 36px;
    width: auto;
    display: block;
}

.finance-header__logo-text {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--hdr-text);
    letter-spacing: -0.02em;
}

/* ── Nav (centre, flex-grow) ─────────────────────────────── */

.finance-header__nav {
    flex: 1;
    min-width: 0;
}

/* ── Right actions ───────────────────────────────────────── */

.finance-header__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* Search button */
.finance-header__search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    border-radius: 8px;
    color: var(--hdr-muted);
    cursor: pointer;
    padding: 0;
    transition: background 0.15s ease, color 0.15s ease;
}

.finance-header__search-btn:hover {
    background: var(--color-surface-soft);
    color: var(--hdr-text);
}

.finance-header__search-btn:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
}

/* CTA */
.finance-header__cta {
    display: inline-flex;
    align-items: center;
    height: 36px;
    padding: 0 16px;
    background: var(--hdr-accent);
    color: var(--color-surface);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    white-space: nowrap;
    transition: background 0.15s ease;
}

.finance-header__cta:hover {
    background: var(--brand-primary-hover);
}

.finance-header__cta:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 3px;
}

/* Hamburger */
.finance-header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    padding: 7px 6px;
}

.finance-header__hamburger-bar {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--hdr-text);
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease, width 0.2s ease;
    pointer-events: none;
}

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

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

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

.finance-header__hamburger:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
}

/* ── Responsive ──────────────────────────────────────────── */

@media (max-width: 1024px) {
    .finance-header__nav {
        display: none;
    }
    .finance-header__hamburger {
        display: flex;
    }
    .finance-header__inner {
        gap: 12px;
    }
}

@media (max-width: 640px) {
    .finance-header__topbar {
        display: none;
    }
    :root {
        --header-height: var(--header-main-h);
    }
    .finance-header__cta {
        display: none;
    }
    .finance-header__inner {
        width: calc(100% - 32px);
    }
}