/* ════════════════════════════════════════════════════════
   PAGE HEADER — Componente unificado
   Tema: page-header--{tera|nutr|adm|sett}
 ════════════════════════════════════════════════════════ */

/* ── Variables por tema ──────────────────────────── */
.page-header--tera {
    --ph-brand: var(--t-brand);
    --ph-brand-mid: var(--t-brand-mid);
    --ph-brand-light: var(--t-brand-light);
    --ph-card: var(--t-card);
    --ph-border: var(--t-border);
    --ph-shadow-sm: var(--t-shadow-sm);
    --ph-muted: var(--t-muted);
    --ph-radius: var(--t-radius);
    --ph-z-sticky: 200;
}

.page-header--nutr {
    --ph-brand: var(--n-brand);
    --ph-brand-mid: var(--n-brand-mid);
    --ph-brand-light: var(--n-brand-light);
    --ph-card: var(--n-card);
    --ph-border: var(--n-border);
    --ph-shadow-sm: var(--n-shadow-sm);
    --ph-muted: var(--n-muted);
    --ph-radius: var(--n-radius);
    --ph-z-sticky: 200;
}

.page-header--adm,
.page-header--sett {
    --ph-brand: var(--a-brand);
    --ph-brand-mid: var(--a-brand-mid);
    --ph-brand-light: var(--a-brand-light);
    --ph-card: var(--a-card);
    --ph-border: var(--a-border);
    --ph-shadow-sm: var(--a-shadow-sm);
    --ph-muted: var(--a-muted);
    --ph-radius: var(--a-radius-sm);
    --ph-z-sticky: 1050;
}

.page-header--agenda {
    --ph-brand: var(--ag-brand);
    --ph-brand-mid: var(--ag-brand-mid);
    --ph-brand-light: var(--ag-brand-light);
    --ph-card: var(--ag-card);
    --ph-border: var(--ag-border);
    --ph-shadow-sm: var(--ag-shadow-sm);
    --ph-muted: var(--ag-muted);
    --ph-radius: var(--ag-radius);
    --ph-z-sticky: 200;
}

.page-header--evaluaciones {
    --ph-brand: var(--e-brand);
    --ph-brand-mid: var(--e-brand-mid);
    --ph-brand-light: var(--e-brand-light);
    --ph-card: var(--e-card);
    --ph-border: var(--e-border);
    --ph-shadow-sm: var(--e-shadow-sm);
    --ph-muted: var(--e-muted);
    --ph-radius: var(--e-radius);
    --ph-z-sticky: 200;
}

.page-header--salud {
    --ph-brand: var(--salud-brand);
    --ph-brand-mid: var(--salud-brand-mid);
    --ph-brand-light: var(--salud-brand-light);
    --ph-card: var(--salud-card);
    --ph-border: var(--salud-border);
    --ph-shadow-sm: var(--salud-shadow-sm);
    --ph-muted: var(--salud-muted);
    --ph-radius: var(--salud-radius);
    --ph-z-sticky: 200;
}

/* ── Layout base ────────────────────────────────── */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: .75rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.page-header__main {
    flex: 1;
    min-width: 0;
}

.page-header__actions {
    display: flex;
    align-items: center;
    gap: .25rem;
    flex-shrink: 0;
}

.page-header__view-buttons {
    display: flex;
    align-items: center;
    gap: .25rem;
}

.page-header .page-header__actions .page-view-btn,
.page-header .page-header__view-buttons .page-view-btn {
    padding: .25rem .5rem !important;
    font-size: .875rem !important;
    min-height: unset !important;
    line-height: 1 !important;
}

/* ── Toolbar ────────────────────────────────────── */
.page-header__toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: .75rem;
    border-top: 1px solid var(--ph-border);
}

/* ── Sticky ─────────────────────────────────────── */
.page-header--sticky {
    position: sticky;
    top: 0;
    z-index: var(--ph-z-sticky, 200);
    background: var(--ph-card);
    border-bottom: 1px solid var(--ph-border);
    box-shadow: var(--ph-shadow-sm);
    padding: .6rem 1.25rem;
    margin-bottom: 0;
    gap: .4rem;
}

.page-header--full {
    max-width: 100vw !important;
    width: 100% !important;
    padding-left: 1.5rem !important;
    padding-right: 1.5rem !important;
    box-sizing: border-box;
}

.page-header--sticky + * {
    margin-top: 1.25rem;
}

.page-header--sticky .page-title {
    font-size: 1rem;
    letter-spacing: -.02em;
}

.page-header--sticky .page-subtitle {
    font-size: .75rem;
    margin-top: .1rem;
}

/* ── Título ─────────────────────────────────────── */
.page-title {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -.02em;
    color: var(--ph-brand);
    margin: 0;
    line-height: 1.25;
    display: flex;
    align-items: center;
    gap: .45rem;
}

.page-title i {
    color: var(--ph-brand-mid);
}

/* ── Botón volver ───────────────────────────────── */
.page-title__back {
    display: none;
    margin-left: auto;
    padding: .3rem .5rem;
    background: var(--ph-brand-light);
    border-radius: var(--ph-radius);
    color: var(--ph-brand);
    text-decoration: none;
}

.page-title__back:hover {
    background: var(--ph-brand);
    color: #fff;
}

/* ── Subtítulo ──────────────────────────────────── */
.page-subtitle {
    font-size: .8rem;
    color: var(--ph-muted);
    margin: .2rem 0 0;
}

/* ── Dropdown ───────────────────────────────────── */
.page-header__dropdown {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    margin-left: 12px;
}

/* ── Breadcrumb ─────────────────────────────────── */
.page-breadcrumb {
    display: flex;
    align-items: center;
    gap: .25rem;
    margin-bottom: .35rem;
    min-height: 28px;
}
.page-breadcrumb--desktop { display: flex; }
.page-breadcrumb__trail {
    display: flex;
    align-items: center;
    gap: .2rem;
    flex-wrap: wrap;
}
.page-breadcrumb__item {
    display: inline-flex;
    align-items: center;
    gap: .2rem;
    font-size: .74rem;
    color: var(--ph-muted);
    text-decoration: none;
    padding: .15rem .35rem;
    border-radius: 6px;
    transition: background .1s, color .1s;
    white-space: nowrap;
}
.page-breadcrumb__item:hover {
    background: var(--ph-brand-light);
    color: var(--ph-brand);
}
.page-breadcrumb__item i { font-size: .65rem; }
.page-breadcrumb__sep {
    font-size: .58rem;
    color: var(--ph-muted);
    user-select: none;
    padding: 0 .05rem;
}
.page-breadcrumb__current {
    font-size: .74rem;
    font-weight: 600;
    color: inherit;
    padding: .15rem .35rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}
.page-breadcrumb__back { display: none; }

@media (max-width: 640px) {
    .page-breadcrumb--desktop { display: none; }
}

/* ── Mobile (max-width: 640px) ──────────────────── */
@media (max-width: 640px) {
    .page-header {
        flex-direction: row;
        flex-wrap: nowrap;
        gap: .25rem;
        align-items: flex-start;
    }

    .page-title {
        font-size: 1.1rem;
    }

    .page-header__actions {
        margin-left: auto;
        flex-shrink: 0;
    }

    .page-header__main {
        flex: 1;
        min-width: 0;
        overflow: hidden;
    }

    .page-header__main .page-title {
        width: auto !important;
        display: inline-flex !important;
    }

    .page-title__back {
        display: none !important;
    }

    .page-header__toolbar {
        flex-direction: column;
        align-items: stretch;
    }
}