/* ================================================================
   Pipelet Header - shared UI skin
   Shared visual contract for #app-header, top nav, and preferences.
   Keep behaviour in each app; keep appearance here.
   ================================================================ */

#app-header {
    background: var(--color-bg-glass, rgba(255,255,255,0.82));
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    color: var(--color-text-primary, rgba(0,0,0,0.92));
    padding: 0 var(--spacing-3xl, 24px);
    height: 56px;
    min-height: 56px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1100;
    border-bottom: 1px solid var(--color-border-secondary, rgba(0,0,0,0.08));
}

#app-header.cpms-header {
    position: fixed;
    left: 0;
    right: 0;
}

#app-header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #c49a6c, var(--brand-500, #1170cf) 50%, #c49a6c);
}

#app-header .header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    gap: var(--spacing-lg, 12px);
}

#app-header .header-left,
#app-header .header-right,
#app-header .topbar-left,
#app-header .topbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg, 12px);
    min-width: 0;
}

#app-header > .header-right {
    margin-left: auto;
}

#app-header .header-brand,
#app-header a.header-brand,
#app-header .topbar-brand,
#app-header a.topbar-brand {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-lg, 12px);
    min-width: 0;
    color: inherit;
    text-decoration: none;
    font-family: var(--font-family-serif, var(--font-serif, Georgia, serif));
    font-size: var(--text-lg, 17px);
    font-weight: var(--font-weight-medium, 500);
    letter-spacing: 0;
}

#app-header .topbar-brand em {
    font-style: italic;
    font-weight: var(--font-weight-bold, 700);
}

#app-header .header-icon,
#app-header .header-logo,
#app-header .topbar-brand-logo {
    width: auto;
    height: 22px;
    color: var(--color-text-primary, rgba(0,0,0,0.92));
    flex-shrink: 0;
}

#app-header h1 {
    font-family: var(--font-family-serif, var(--font-serif, var(--font-family, Inter, system-ui, sans-serif)));
    font-size: var(--text-lg, 18px);
    font-weight: var(--font-weight-medium, 500);
    letter-spacing: 0;
    color: var(--color-text-primary, rgba(0,0,0,0.92));
    margin: 0;
    line-height: 1.2;
    min-width: 0;
}

#app-header h1 em {
    font-style: italic;
    font-weight: var(--font-weight-bold, 700);
}

#app-header .header-device {
    font-size: 11px;
    color: var(--color-text-quaternary, rgba(0,0,0,0.40));
    font-weight: 400;
    margin-left: 8px;
    align-self: center;
}

#app-header nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs, 4px);
    min-width: 0;
}

#app-header .topbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs, 4px);
    list-style: none;
    margin: 0;
    padding: 0;
    min-width: 0;
}

#app-header .nav-link,
#app-header .topbar-link {
    color: var(--color-text-secondary, rgba(0,0,0,0.62));
    text-decoration: none;
    padding: var(--spacing-md, 8px) var(--spacing-lg, 12px);
    border-radius: var(--radius-sm, 6px);
    font-size: var(--text-sm, 14px);
    font-weight: var(--font-weight-medium, 500);
    line-height: 1.35;
    white-space: nowrap;
    transition: background 0.15s ease, color 0.15s ease;
}

#app-header .nav-link:hover,
#app-header .topbar-link:hover {
    color: var(--color-text-primary, rgba(0,0,0,0.92));
    background: var(--color-bg-active, rgba(0,0,0,0.04));
}

#app-header .nav-link.active,
#app-header .topbar-link.active {
    color: var(--color-text-primary, rgba(0,0,0,0.92));
    background: var(--color-bg-active, rgba(0,0,0,0.06));
    font-weight: var(--font-weight-semibold, 600);
}

#app-header .topbar-link svg {
    flex-shrink: 0;
}

#app-header .topbar-user {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-lg, 12px);
    padding-left: var(--spacing-lg, 12px);
    border-left: 1px solid var(--color-border-secondary, rgba(0,0,0,0.08));
    font-size: var(--text-sm, 14px);
    color: var(--color-text-secondary, rgba(0,0,0,0.62));
}

#app-header .topbar-user form {
    display: inline;
}

#app-header .topbar-logout,
.header-icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 10px;
    border: 1px solid var(--color-border-secondary, rgba(0,0,0,0.08));
    border-radius: var(--radius-md, 8px);
    background: transparent;
    color: var(--color-text-secondary, rgba(0,0,0,0.62));
    cursor: pointer;
    font-family: inherit;
    font-size: var(--text-sm, 14px);
    font-weight: var(--font-weight-semibold, 600);
    text-decoration: none;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

#app-header .topbar-logout:hover,
.header-icon-button:hover,
.header-icon-button:focus {
    background: var(--color-bg-active, rgba(0,0,0,0.04));
    color: var(--color-text-primary, rgba(0,0,0,0.92));
    border-color: var(--color-border-primary, rgba(0,0,0,0.14));
}

.header-icon-button svg,
.header-icon-button i {
    width: 18px;
    height: 18px;
    font-size: 18px;
    line-height: 1;
}

.prefs-dropdown {
    position: relative;
    display: inline-flex;
    flex-shrink: 0;
}

.prefs-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    height: 34px;
    padding: 0 10px;
    border: 1px solid var(--color-border-secondary, rgba(0,0,0,0.08));
    border-radius: var(--radius-md, 8px);
    background: transparent;
    color: var(--color-text-secondary, rgba(0,0,0,0.62));
    cursor: pointer;
    font-family: inherit;
    font-size: var(--text-sm, 14px);
    font-weight: var(--font-weight-semibold, 600);
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.prefs-toggle:hover,
.prefs-toggle[aria-expanded="true"] {
    background: var(--color-bg-active, rgba(0,0,0,0.04));
    color: var(--color-text-primary, rgba(0,0,0,0.92));
    border-color: var(--color-border-primary, rgba(0,0,0,0.14));
}

.prefs-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    min-width: 160px;
    max-width: calc(100vw - 16px);
    background: var(--color-bg-primary, #ffffff);
    border: 1px solid var(--color-border, rgba(0,0,0,0.12));
    border-radius: var(--radius-lg, 10px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    z-index: 1000;
    padding: var(--spacing-xs, 4px) 0;
}

.prefs-menu.open {
    display: block;
}

.prefs-menu[data-open="true"] {
    display: block;
}

.prefs-section {
    padding: 2px 0;
}

.prefs-section-label {
    padding: 4px 14px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0;
    color: var(--color-text-tertiary, rgba(0,0,0,0.52));
}

.prefs-user,
.prefs-section-user {
    padding: 8px 14px 4px;
}

.prefs-user-email,
.prefs-user-name {
    font-size: 12px;
    font-weight: var(--font-weight-semibold, 600);
    color: var(--color-text-primary, rgba(0,0,0,0.92));
    word-break: break-all;
}

.prefs-user-role,
.prefs-user-label {
    font-size: 11px;
    color: var(--color-text-tertiary, rgba(0,0,0,0.52));
    margin-top: 2px;
}

.prefs-divider {
    height: 1px;
    background: var(--color-border, rgba(0,0,0,0.12));
    margin: 4px 0;
}

.prefs-item {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 7px 14px;
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    font-size: var(--text-sm, 14px);
    color: var(--color-text-quaternary, rgba(0,0,0,0.40));
    text-align: left;
    transition: background 0.1s ease, color 0.1s ease;
}

.prefs-item:hover {
    background: var(--color-bg-secondary, rgba(0,0,0,0.04));
    color: var(--color-text-primary, rgba(0,0,0,0.92));
}

.prefs-item.active {
    color: var(--color-text-primary, rgba(0,0,0,0.92));
    font-weight: 600;
}

.prefs-item.active::after {
    content: "\2713";
    margin-left: auto;
    font-size: 0.85em;
    color: var(--brand-500, #1170cf);
}

.prefs-item-danger,
.prefs-item--danger {
    color: var(--error-500, #db1f2e);
}

.prefs-item-danger:hover,
.prefs-item--danger:hover {
    background: var(--color-bg-error-subtle, rgba(219,31,46,0.08));
    color: var(--error-500, #db1f2e);
}

@media (max-width: 900px) {
    #app-header {
        height: auto;
        padding: var(--spacing-md, 8px) var(--spacing-xl, 16px);
    }

    #app-header .header-content {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md, 8px);
        padding: var(--spacing-md, 8px) 0;
    }

    #app-header .header-left,
    #app-header .header-right,
    #app-header .topbar-left,
    #app-header .topbar-right {
        flex-wrap: wrap;
        gap: var(--spacing-md, 8px);
    }

    #app-header .header-right {
        width: 100%;
        justify-content: flex-start;
    }

    #app-header nav {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 2px;
    }

    #app-header .topbar-nav {
        overflow-x: auto;
        padding-bottom: 2px;
    }

    #app-header h1 {
        font-size: var(--text-md, 16px);
    }
}