/* ═══════════════════════════════════════════════════════════════════════════
   FT Page Header — institutional standard for every Admin screen
   Tokens: --ft-color-*, --ft-space-*, --ft-radius-*
   Variants: default (ops surface) · hero (banner gradient)
   ═══════════════════════════════════════════════════════════════════════════ */

.ft-page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--ft-space-4);
    padding: var(--ft-space-5) var(--ft-space-5);
    margin-bottom: var(--ft-space-5);
    background: var(--ft-color-bg-elevated);
    border: 1px solid var(--ft-color-border);
    border-radius: var(--ft-radius-md);
    box-shadow: var(--ft-shadow-sm);
    color: var(--ft-color-text-primary);
}

.ft-page-header--hero {
    background: var(--ft-page-banner-bg);
    border-color: var(--ft-page-banner-border);
    color: var(--ft-page-banner-text);
    box-shadow: var(--ft-shadow-glow);
    position: relative;
    overflow: hidden;
}

.ft-page-header--hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(color-mix(in srgb, var(--ft-color-primary) 6%, transparent) 1px, transparent 1px),
        linear-gradient(90deg, color-mix(in srgb, var(--ft-color-primary) 6%, transparent) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    opacity: 0.55;
}

.ft-page-header__main {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-start;
    gap: var(--ft-space-4);
    min-width: 0;
    flex: 1 1 18rem;
}

.ft-page-header__icon {
    flex: 0 0 auto;
    width: 2.75rem;
    height: 2.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--ft-radius-sm);
    border: 1px solid var(--ft-color-border-strong);
    background: color-mix(in srgb, var(--ft-color-primary) 10%, transparent);
    color: var(--ft-color-primary);
}

.ft-page-header--hero .ft-page-header__icon {
    border-color: color-mix(in srgb, var(--ft-page-banner-text) 35%, transparent);
    background: color-mix(in srgb, var(--ft-page-banner-text) 12%, transparent);
    color: var(--ft-page-banner-text);
}

.ft-page-header__copy {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--ft-space-1);
}

.ft-page-header__breadcrumb {
    margin: 0;
    font-size: var(--ft-font-size-xs);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ft-color-text-muted);
}

.ft-page-header--hero .ft-page-header__breadcrumb {
    color: color-mix(in srgb, var(--ft-page-banner-text) 75%, transparent);
}

.ft-page-header__title {
    margin: 0;
    font-size: var(--ft-font-size-xl);
    font-weight: var(--ft-font-weight-bold);
    line-height: 1.25;
    color: inherit;
    letter-spacing: -0.01em;
}

.ft-page-header__subtitle {
    margin: 0;
    max-width: 44rem;
    font-size: var(--ft-font-size-sm);
    line-height: 1.45;
    color: var(--ft-color-text-secondary);
}

.ft-page-header--hero .ft-page-header__subtitle {
    color: color-mix(in srgb, var(--ft-page-banner-text) 82%, transparent);
}

.ft-page-header__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ft-space-2);
    margin-top: var(--ft-space-2);
}

.ft-page-header__actions {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: var(--ft-space-2);
    flex: 0 1 auto;
}

.ft-page-header__toolbar {
    flex: 1 0 100%;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--ft-space-3);
    padding-top: var(--ft-space-4);
    margin-top: var(--ft-space-1);
    border-top: 1px solid var(--ft-color-border);
    position: relative;
    z-index: 1;
}

.ft-page-header--hero .ft-page-header__toolbar {
    border-top-color: color-mix(in srgb, var(--ft-page-banner-text) 18%, transparent);
}

.ft-page-header__stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--ft-space-3);
    width: 100%;
    margin: 0 0 var(--ft-space-5);
}

/* Align legacy HUD headers to the same contract */
.hud-layout .hud-page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--ft-space-4);
    padding: var(--ft-space-5);
    margin-bottom: var(--ft-space-5);
    background: var(--ft-color-bg-elevated);
    border: 1px solid var(--ft-color-border);
    border-radius: var(--ft-radius-md);
    box-shadow: var(--ft-shadow-sm);
}

.hud-layout .hud-page-title {
    margin: 0;
    font-size: var(--ft-font-size-xl);
    font-weight: var(--ft-font-weight-bold);
    color: var(--ft-color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--ft-space-2);
}

.hud-layout .hud-page-subtitle {
    margin: var(--ft-space-1) 0 0;
    font-size: var(--ft-font-size-sm);
    color: var(--ft-color-text-secondary);
    max-width: 44rem;
}

.hud-layout .hud-page-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--ft-space-2);
}

[data-ft-density="compact"] .ft-page-header,
[data-ft-density="compact"] .hud-layout .hud-page-header {
    padding: var(--ft-space-3) var(--ft-space-4);
    margin-bottom: var(--ft-space-4);
}

[data-ft-density="comfortable"] .ft-page-header,
[data-ft-density="comfortable"] .hud-layout .hud-page-header {
    padding: var(--ft-space-6) var(--ft-space-6);
}