/* ─── Header & Navigation ─────────────────────────────────────────────────── */

/* Topbar */
.topbar {
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent-2) 100%);
    color: var(--white); font-size: .83rem; padding: 0;
}
.topbar-inner {
    min-height: 40px; display: flex; align-items: center;
    justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.topbar-left { display: flex; align-items: center; gap: 16px; opacity: .9; }
.topbar-left i { color: var(--accent); }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar-right a { color: var(--white); opacity: .9; display: flex; align-items: center; gap: 5px; }
.topbar-right a:hover { opacity: 1; }
@media (max-width: 640px) { .topbar-left { display: none; } }

/* Site header */
.site-header {
    position: sticky; top: 0; z-index: 999;
    background: rgba(255,255,255,.98); backdrop-filter: blur(16px);
    border-bottom: 2px solid transparent;
    background-clip: padding-box;
    box-shadow: 0 2px 20px rgba(26,35,126,.1);
}
.site-header::after {
    content: ''; display: block; height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--green));
}

.header-shell {
    min-height: 78px; display: flex; align-items: center;
    justify-content: space-between; gap: 20px;
}

/* Brand / Logo */
.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-logo { width: 64px; height: 64px; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name {
    font-size: .95rem; font-weight: 700; color: var(--primary);
    letter-spacing: -.01em;
}
.brand-tagline { font-size: .7rem; color: var(--text-soft); }

/* Nav */
.site-nav {
    display: flex; align-items: center; gap: 4px;
}
.site-nav > a {
    padding: 9px 14px; border-radius: var(--radius-sm);
    font-size: .9rem; font-weight: 500; color: var(--text);
    transition: all var(--transition); white-space: nowrap;
}
.site-nav > a:hover, .site-nav > a.active {
    color: var(--primary); background: var(--bg-soft);
}
.site-nav .nav-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: var(--white) !important; border-radius: var(--radius-full);
    padding: 9px 20px; font-weight: 600;
    box-shadow: 0 3px 12px rgba(26,35,126,.25);
}
.site-nav .nav-cta:hover {
    background: linear-gradient(135deg, var(--accent-2), var(--accent));
    box-shadow: 0 5px 18px rgba(41,182,216,.35); transform: translateY(-1px);
}

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-toggle {
    display: flex; align-items: center; gap: 5px;
    padding: 9px 14px; border-radius: var(--radius-sm);
    font-size: .9rem; font-weight: 500; color: var(--text);
    cursor: pointer; background: none; border: none; font-family: inherit;
    transition: all var(--transition);
}
.nav-dropdown-toggle:hover, .nav-dropdown.php-active .nav-dropdown-toggle {
    color: var(--primary); background: var(--bg-soft);
}
.dropdown-arrow { font-style: normal; font-size: .75rem; transition: transform var(--transition); }
.nav-dropdown.js-open .dropdown-arrow { transform: rotate(45deg); }
.nav-dropdown-menu {
    position: absolute; top: calc(100% + 8px); left: 0;
    background: var(--white); border: 1px solid var(--border);
    border-radius: var(--radius-md); padding: 8px;
    min-width: 220px; box-shadow: var(--shadow-md);
    display: none; flex-direction: column; gap: 2px; z-index: 100;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.js-open .nav-dropdown-menu { display: flex; }
.nav-dropdown-menu a {
    padding: 9px 14px; border-radius: var(--radius-sm);
    font-size: .88rem; color: var(--text); display: flex; align-items: center; gap: 8px;
}
.nav-dropdown-menu a:hover { background: var(--bg-soft); color: var(--primary); }
.nav-dropdown-menu a.active { color: var(--primary); background: var(--bg-soft); font-weight: 600; }

/* Mobile toggle */
.nav-toggle {
    display: none; flex-direction: column; gap: 5px;
    width: 38px; height: 38px; align-items: center; justify-content: center;
    border-radius: var(--radius-sm); background: var(--bg-soft);
}
.nav-toggle span {
    display: block; width: 22px; height: 2px;
    background: var(--primary); border-radius: 2px;
    transition: all var(--transition);
}

@media (max-width: 960px) {
    .nav-toggle { display: flex; }
    .site-nav {
        position: absolute; top: 100%; left: 0; right: 0;
        background: var(--white); flex-direction: column; align-items: stretch;
        gap: 4px; padding: 16px; border-bottom: 2px solid var(--border);
        box-shadow: var(--shadow-md); display: none; z-index: 998;
    }
    .site-nav.open { display: flex; }
    .site-nav > a { border-radius: var(--radius-sm); }
    .nav-dropdown-menu { position: static; box-shadow: none; border: none;
        background: var(--bg-light); margin-top: 4px; display: none !important; }
    .nav-dropdown.js-open .nav-dropdown-menu { display: flex !important; }
    .nav-dropdown-toggle { width: 100%; justify-content: space-between; }
    .site-nav .nav-cta { text-align: center; justify-content: center; border-radius: var(--radius-sm); }
}