/* ==========================================================================
   HEADER — Sticky nav, search, icons, mobile menu, category drip nav
   Depends on: base.css, components.css
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. ANNOUNCEMENT BAR — removed; stub kept for future use
   -------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------
   2. SITE HEADER (sticky)
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-nav);
    background: rgba(8, 8, 16, 0.97);
    border-bottom: 1px solid rgba(57, 255, 20, 0.12);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: box-shadow var(--ease);
}
.site-header.is-scrolled { box-shadow: 0 4px 32px rgba(0,0,0,0.5); }

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
    height: var(--header-height);
}

/* --------------------------------------------------------------------------
   3. LOGO
   -------------------------------------------------------------------------- */
.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    flex-shrink: 0;
}
.site-logo__badge {
    background: var(--tx-green);
    color: var(--tx-black);
    font-family: var(--font-display);
    font-size: var(--text-xs);
    padding: 5px 9px;
    border-radius: var(--radius-xs);
    letter-spacing: 1px;
    line-height: 1;
}
.site-logo__name {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    color: var(--tx-white);
    letter-spacing: 2px;
    line-height: 1;
}
.site-logo img { height: 36px; width: auto; }

/* --------------------------------------------------------------------------
   4. PRIMARY NAVIGATION
   -------------------------------------------------------------------------- */
.primary-nav { display: flex; align-items: center; gap: 2px; }

.primary-nav .menu-item > a {
    display: block;
    color: var(--tx-muted);
    font-size: var(--text-sm);
    font-weight: 700;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.5px;
    white-space: nowrap;
    transition: color var(--ease), background var(--ease);
}
.primary-nav .menu-item > a:hover,
.primary-nav .current-menu-item > a,
.primary-nav .current-menu-ancestor > a {
    color: var(--tx-white);
    background: rgba(255,255,255,0.06);
}
.primary-nav .current-menu-item > a { color: var(--tx-green); }

.primary-nav .menu-item { position: relative; }
.primary-nav .menu-item:hover > a { color: var(--tx-white); }

.tx-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: #0D1024;
    border: 1px solid var(--tx-border);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2) 0;
    min-width: 210px;
    border-radius: var(--radius-md);
    z-index: var(--z-nav);
    animation: fadeIn 0.15s ease both;
}
.primary-nav .menu-item:hover > .tx-dropdown-menu { display: block; }

.tx-dropdown-menu li a {
    display: block;
    color: var(--tx-muted-light);
    padding: 10px var(--space-5);
    font-size: var(--text-sm);
    font-weight: 600;
    transition: background var(--ease), color var(--ease);
}
.tx-dropdown-menu li a:hover { background: var(--tx-navy); color: var(--tx-green); }
.tx-dropdown-menu li + li { border-top: 1px solid rgba(255,255,255,0.04); }

/* --------------------------------------------------------------------------
   5. HEADER ACTIONS
   -------------------------------------------------------------------------- */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}
.header-icon {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px; height: 38px;
    color: var(--tx-muted);
    border-radius: var(--radius-sm);
    font-size: 19px;
    transition: color var(--ease), background var(--ease);
    text-decoration: none;
}
.header-icon:hover { color: var(--tx-green); background: rgba(57,255,20,0.07); }
.header-icon .count {
    position: absolute;
    top: 2px; right: 2px;
    background: var(--tx-green);
    color: var(--tx-black);
    font-size: 9px;
    font-weight: 700;
    width: 16px; height: 16px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    line-height: 1;
    pointer-events: none;
}

/* --------------------------------------------------------------------------
   6. MOBILE MENU TOGGLE
   -------------------------------------------------------------------------- */
.menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    background: none;
    border: 1px solid var(--tx-border);
    color: var(--tx-white);
    border-radius: var(--radius-sm);
    font-size: 18px;
    transition: border-color var(--ease), color var(--ease);
}
.menu-toggle:hover { border-color: rgba(57,255,20,0.4); color: var(--tx-green); }

/* --------------------------------------------------------------------------
   7. CATEGORY DRIP NAV
   -------------------------------------------------------------------------- */
.cat-drip-nav {
    position: relative;
    z-index: calc( var(--z-nav) - 1 );
}

/* Trigger strip */
.cat-drip-nav__trigger {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    background: var(--tx-navy);
    border: none;
    border-bottom: 1px solid rgba(57, 255, 20, 0.12);
    color: var(--tx-muted);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    padding: 10px var(--space-6);
    cursor: pointer;
    transition: color var(--ease), background var(--ease);
    user-select: none;
}
.cat-drip-nav__trigger:hover,
.cat-drip-nav__trigger[aria-expanded="true"] {
    color: var(--tx-green);
    background: var(--tx-navy-light);
}

/* 3-line icon */
.cat-drip-nav__trigger-icon {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex-shrink: 0;
}
.cat-drip-nav__trigger-icon span {
    display: block;
    width: 16px;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.cat-drip-nav__trigger[aria-expanded="true"] .cat-drip-nav__trigger-icon span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
.cat-drip-nav__trigger[aria-expanded="true"] .cat-drip-nav__trigger-icon span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.cat-drip-nav__trigger[aria-expanded="true"] .cat-drip-nav__trigger-icon span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Arrow chevron */
.cat-drip-nav__trigger-arrow {
    margin-left: auto;
    color: currentColor;
    transition: transform var(--ease);
    flex-shrink: 0;
}
.cat-drip-nav__trigger[aria-expanded="true"] .cat-drip-nav__trigger-arrow {
    transform: rotate(180deg);
}

/* Slide panel */
.cat-drip-nav__panel {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: var(--z-overlay);
    background: var(--tx-navy);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition:
        max-height 0.38s cubic-bezier(0.4, 0, 0.2, 1),
        opacity    0.22s ease;
}
.cat-drip-nav.is-open .cat-drip-nav__panel {
    max-height: 500px;
    opacity: 1;
    pointer-events: auto;
}

/* Links grid */
.cat-drip-nav__links {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: var(--space-4) var(--space-6) var(--space-3);
}
.cat-drip-nav__links a {
    display: inline-flex;
    align-items: center;
    color: var(--tx-muted);
    font-size: var(--text-sm);
    font-weight: 700;
    padding: 7px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    letter-spacing: 0.5px;
    white-space: nowrap;
    text-decoration: none;
    opacity: 0;
    transform: translateY(-6px);
    transition:
        opacity 0.2s ease,
        transform 0.2s ease,
        color var(--ease),
        border-color var(--ease),
        background var(--ease);
}
.cat-drip-nav__links a:hover,
.cat-drip-nav__links a.active {
    color: var(--tx-green);
    border-color: rgba(57, 255, 20, 0.25);
    background: rgba(57, 255, 20, 0.05);
}
.cat-drip-nav.is-open .cat-drip-nav__links a {
    opacity: 1;
    transform: translateY(0);
}
/* Stagger delays */
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(1)  { transition-delay: 0.08s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(2)  { transition-delay: 0.11s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(3)  { transition-delay: 0.14s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(4)  { transition-delay: 0.17s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(5)  { transition-delay: 0.20s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(6)  { transition-delay: 0.23s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(7)  { transition-delay: 0.26s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(8)  { transition-delay: 0.29s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(9)  { transition-delay: 0.32s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(10) { transition-delay: 0.35s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(11) { transition-delay: 0.38s; }
.cat-drip-nav.is-open .cat-drip-nav__links a:nth-child(12) { transition-delay: 0.41s; }

/* Drip SVG hanging off the bottom */
.cat-drip-nav__drip {
    display: block;
    width: 100%;
    height: 48px;
    margin-top: -1px;
    pointer-events: none;
}

/* --------------------------------------------------------------------------
   8. RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    .menu-toggle { display: flex; }
    .header-actions .search-field { display: none; }

    .primary-nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0; right: 0;
        background: var(--tx-void);
        flex-direction: column;
        align-items: stretch;
        padding: var(--space-4);
        border-bottom: 1px solid var(--tx-border);
        z-index: var(--z-overlay);
        gap: 2px;
    }
    .primary-nav.is-open { display: flex; }
    .primary-nav .menu-item > a { padding: var(--space-3) var(--space-4); }

    .tx-dropdown-menu {
        display: block;
        position: static;
        transform: none;
        box-shadow: none;
        background: rgba(255,255,255,0.03);
        border: none;
        border-radius: 0;
        margin-left: var(--space-4);
    }

    .cat-drip-nav__links {
        padding: var(--space-3) var(--space-4) var(--space-2);
    }
}

@media (max-width: 480px) {
    .site-logo__name { font-size: var(--text-base); }
    .cat-drip-nav__trigger { padding: 9px var(--space-4); }
}