/* ═══════════════════════════════════════════════════════════════════════
   UDM HEADER STYLES
   Sticky transparent → solid on scroll. Mobile hamburger overlay.
   ═══════════════════════════════════════════════════════════════════════ */

.udm-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.udm-header.is-scrolled {
    background: rgba(9, 13, 10, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom-color: rgba(34, 197, 94, 0.12);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.30);
}

.udm-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

/* ─── Logo ─────────────────────────────────────────────────────────────── */
.udm-header__logo { flex-shrink: 0; }
.udm-header__logo-link { display: block; line-height: 0; }
.udm-logo { display: block; }

/* ─── Desktop nav ──────────────────────────────────────────────────────── */
.udm-nav { display: none; }
@media (min-width: 1024px) {
    .udm-nav {
        display: block;
        flex: 1;
        text-align: center;
    }
}
.udm-nav__list {
    list-style: none;
    margin: 0; padding: 0;
    display: inline-flex;
    gap: 28px;
    align-items: center;
}
.udm-nav__link {
    font-size: 14px;
    font-weight: 500;
    color: rgba(240, 253, 244, 0.70);
    letter-spacing: -0.01em;
    text-decoration: none;
    position: relative;
    padding: 4px 0;
    transition: color 0.2s ease;
}
.udm-nav__link::after {
    content: '';
    position: absolute;
    left: 0; bottom: -2px;
    width: 100%;
    height: 1.5px;
    background: var(--udm-green);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.2s ease;
}
.udm-nav__link:hover {
    color: #F0FDF4;
}
.udm-nav__link:hover::after { transform: scaleX(1); }

/* ─── CTA group (right) ────────────────────────────────────────────────── */
.udm-header__cta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.udm-header__login { font-size: 14px; }

/* Hide the "Get Started" button on small screens — hamburger opens it */
@media (max-width: 1023px) {
    .udm-header__get-started { display: none; }
}

/* ─── Account menu (logged-in) ─────────────────────────────────────────── */
.udm-account-menu { position: relative; }
.udm-account-menu__trigger {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: 1px solid var(--udm-border);
    border-radius: var(--udm-radius-pill);
    padding: 5px 14px 5px 5px;
    color: var(--udm-text-primary);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}
.udm-account-menu__trigger:hover {
    border-color: var(--udm-border-bright);
    background: rgba(34, 197, 94, 0.05);
}
.udm-account-menu__avatar {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--udm-green);
    color: #090D0A;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 11px;
}
.udm-account-menu__chevron {
    transition: transform 0.2s ease;
}
.udm-account-menu.is-open .udm-account-menu__chevron { transform: rotate(180deg); }

.udm-account-menu__dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: var(--udm-bg-card);
    border: 1px solid var(--udm-border);
    border-radius: var(--udm-radius);
    padding: 6px;
    box-shadow: var(--udm-shadow-card);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
    z-index: 1001;
}
.udm-account-menu.is-open .udm-account-menu__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.udm-account-menu__item {
    display: block;
    padding: 9px 12px;
    color: var(--udm-text-secondary);
    font-size: 14px;
    text-decoration: none;
    border-radius: var(--udm-radius-sm);
    transition: background 0.15s, color 0.15s;
}
.udm-account-menu__item:hover {
    background: rgba(34, 197, 94, 0.08);
    color: var(--udm-text-primary);
}

/* ─── Hamburger ────────────────────────────────────────────────────────── */
.udm-hamburger {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px; height: 40px;
    background: transparent;
    border: 1px solid var(--udm-border);
    border-radius: var(--udm-radius-sm);
    cursor: pointer;
    padding: 0 9px;
    transition: border-color 0.2s;
}
.udm-hamburger:hover { border-color: var(--udm-border-bright); }
.udm-hamburger__bar {
    display: block;
    height: 1.5px;
    width: 100%;
    background: var(--udm-text-primary);
    transition: transform 0.25s ease, opacity 0.25s ease;
    transform-origin: center;
}
.udm-hamburger.is-active .udm-hamburger__bar:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}
.udm-hamburger.is-active .udm-hamburger__bar:nth-child(2) {
    opacity: 0;
}
.udm-hamburger.is-active .udm-hamburger__bar:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}
@media (min-width: 1024px) {
    .udm-hamburger { display: none; }
}

/* ─── Mobile menu overlay ──────────────────────────────────────────────── */
.udm-mobile-menu {
    position: fixed;
    top: 72px; right: 0;
    width: 280px;
    max-width: 85vw;
    height: calc(100vh - 72px);
    background: var(--udm-bg-section);
    border-left: 1px solid var(--udm-border);
    border-top: 1px solid var(--udm-border);
    padding: 24px;
    box-shadow: -16px 0 40px rgba(0, 0, 0, 0.5);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    z-index: 999;
}
.udm-mobile-menu.is-open {
    transform: translateX(0);
}
.udm-mobile-menu__nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.udm-mobile-menu__link {
    display: block;
    padding: 14px 16px;
    color: var(--udm-text-primary);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--udm-radius-sm);
    transition: background 0.2s;
}
.udm-mobile-menu__link:hover { background: rgba(34, 197, 94, 0.08); }
.udm-mobile-menu__link--ghost { color: var(--udm-text-secondary); }
.udm-mobile-menu__cta {
    margin-top: 16px;
}

/* ─── Body lock when mobile menu open ──────────────────────────────────── */
body.udm-menu-open { overflow: hidden; }

/* ─── Main content offset (fixed header) ───────────────────────────────── */
.udm-main { padding-top: 0; }