/* ══════════════════════════════════════════════════════════════
   HEADER
   ══════════════════════════════════════════════════════════════ */
.app-header {
    position: fixed; top: 0; left: 0; right: 0;
    height: var(--hdr-height);
    background: #fff;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px 0 0; z-index: 1000;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.app-header__logo a {
    display: flex; align-items: center; gap: 12px; text-decoration: none;
    padding: 0 16px 0 6px; height: var(--hdr-height); width: var(--sb-width);
    background: #fff; border-right: 1px solid var(--border);
}
.app-header__logo img { height: 56px; width: auto; max-width: 180px; object-fit: contain; }
.app-header__logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.app-header__logo-text strong { color: #fff; font-size: 14px; font-weight: 800; letter-spacing: -.2px; }
.app-header__logo-text small  { color: rgba(255,255,255,.6); font-size: 10.5px; }
.app-header__right { display: flex; align-items: center; gap: 6px; }

/* ── Header datetime ─────────────────────────────────────────────── */
.app-header__datetime {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    margin-right: 8px;
    height: 34px;
    padding: 0 4px;
}
.app-header__clock {
    font-size: 15px;
    font-weight: 700;
    color: #000;
    font-variant-numeric: tabular-nums;
}
.app-header__date {
    font-size: 15px;
    font-weight: 500;
    color: #000;
}
.app-header__username { font-weight: 700; color: var(--text-h); font-size: 14px; }
.app-header__logout {
    display: flex; align-items: center; gap: 6px;
    color: var(--text-muted); text-decoration: none; font-size: 13px; font-weight: 600;
    padding: 6px 13px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    transition: all .15s;
}
.app-header__logout:hover { background: var(--surface-2); color: var(--text-h); border-color: #b0bcc8; }


/* ══════════════════════════════════════════════════════════════
   LAYOUT
   ══════════════════════════════════════════════════════════════ */
.app-wrapper { display: flex; padding-top: var(--hdr-height); min-height: 100vh; }
.app-content {
    margin-left: var(--sb-width);
    padding: 28px 20px;
    flex: 1;
    min-width: 0;
    background: var(--bg);
    /* Altura mínima = lo que queda debajo del header, NO 100vh
       (que sumaba scroll innecesario por el padding-top del wrapper) */
    min-height: calc(100vh - var(--hdr-height));
}

.app-wrapper.sb-collapsed .app-sidebar         { width: 48px; overflow: hidden; }
.app-wrapper.sb-collapsed .app-content         { margin-left: 48px; }
.app-wrapper.sb-collapsed .app-header__logo a  { width: 48px; padding: 0 12px; }
.app-wrapper.sb-collapsed .app-header__logo img,
.app-wrapper.sb-collapsed .app-header__logo span      { display: none; }
.app-wrapper.sb-collapsed .sidebar-nav__group-items,
.app-wrapper.sb-collapsed .sidebar-nav__arrow         { display: none; }
.app-wrapper.sb-collapsed .sidebar-nav__item          { justify-content: center; padding: 11px 0; }
.app-wrapper.sb-collapsed .sidebar-nav__group-toggle  { justify-content: center; padding: 11px 0; }

.sidebar-toggle {
    display: none; align-items: center; justify-content: center;
    width: 40px; height: 40px;
    margin-left: 12px; flex-shrink: 0;
    background: none; border: 1.5px solid var(--border);
    border-radius: var(--radius-sm); cursor: pointer;
    color: var(--text); font-size: 17px;
}

/* ══════════════════════════════════════════════════════════════
   SIDEBAR
   ══════════════════════════════════════════════════════════════ */
.app-sidebar {
    width: var(--sb-width); background: var(--sb-bg);
    position: fixed; top: var(--hdr-height); left: 0; bottom: 0;
    overflow: hidden; z-index: 900;
    transition: width .22s ease;
    display: flex; flex-direction: column;
}

.app-sidebar > nav {
    flex: 1; min-height: 0;
    overflow-y: auto; overflow-x: hidden;
    scrollbar-width: none;
    scrollbar-color: transparent transparent;
}
.app-sidebar > nav::-webkit-scrollbar       { width: 0; background: transparent; }
.app-sidebar > nav::-webkit-scrollbar-thumb { background: transparent; border-radius: 0; }
.app-sidebar > nav:hover::-webkit-scrollbar       { width: 2px; }
.app-sidebar > nav:hover::-webkit-scrollbar-thumb { background: rgba(255,255,255,.2); border-radius: 2px; }

.sidebar-nav { padding: 6px 0 20px; }

.sidebar-nav__item {
    display: flex; align-items: center; gap: 11px;
    padding: 12px 20px;
    color: var(--sb-text); text-decoration: none;
    font-size: 14px; font-weight: 400;
    border-left: 3px solid transparent;
    transition: background .13s, color .13s; white-space: nowrap;
}
.sidebar-nav__item:hover  { background: var(--sb-hover); color: rgba(255,255,255,.98); }
.sidebar-nav__item.active {
    background: var(--sb-active);
    color: #fff; font-weight: 400;
    border-left-color: var(--sb-accent);
}

.sidebar-nav__item--sub {
    padding: 10px 20px 10px 24px;
    font-size: 13.5px; font-weight: 400; color: #fff;
    border-left: 3px solid transparent;
}
.sidebar-nav__item--sub:hover  { background: var(--sb-hover); color: #fff; }
.sidebar-nav__item--sub.active { color: #fff; font-weight: 600; background: rgba(17,40,47,.41); border-left-color: var(--sb-accent); }

.sidebar-nav__group { border-top: 1px solid rgba(255,255,255,.06); }
.sidebar-nav__group-toggle {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 20px; color: var(--sb-text); cursor: pointer;
    font-size: 14px; font-weight: 400;
    border-left: 3px solid transparent; transition: background .13s;
}
.sidebar-nav__group-toggle:hover { background: var(--sb-hover); color: rgba(255,255,255,.98); }
.sidebar-nav__group-toggle span  { display: flex; align-items: center; gap: 11px; }
.sidebar-nav__arrow { transition: transform .2s; font-size: 10px; opacity: .50; }
.sidebar-nav__group.open .sidebar-nav__arrow { transform: rotate(90deg); opacity: .9; }
.sidebar-nav__group-items { display: none; background: rgba(0,0,0,.18); }
.sidebar-nav__group.open .sidebar-nav__group-items { display: block; }

.sb-collapse-btn {
    display: flex; align-items: center; justify-content: center;
    width: 100%; padding: 11px 0;
    color: rgba(255,255,255,.28); cursor: pointer; border: none;
    background: transparent; font-size: 12px;
    border-top: 1px solid rgba(255,255,255,.06); transition: color .15s;
}
.sb-collapse-btn:hover { color: rgba(255,255,255,.75); }

.sb-version-badge {
    flex-shrink: 0;
    padding: 8px 16px;
    border-top: 1px solid rgba(255,255,255,.08);
    background: rgba(0,0,0,.35);
    backdrop-filter: blur(4px);
}
.sb-version-inner {
    display: flex; align-items: center; gap: 5px;
    font-size: 10px; font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: .3px; white-space: nowrap;
}
.sb-version-inner .fa-circle-dot { font-size: 7px; color: var(--sb-accent); opacity: .7; }
.sb-version-inner strong         { color: rgba(255,255,255,.75); font-weight: 700; }
.sb-version-sep                  { opacity: .45; }

/* ══════════════════════════════════════════════════════════════
   PAGE HEADER
   ══════════════════════════════════════════════════════════════ */
.page-header {
    display: flex; flex-direction: row;
    align-items: center; justify-content: space-between;
    gap: 10px; margin-bottom: 20px;
    flex-wrap: wrap;
}
.page-header h1 {
    font-size: 20px; font-weight: 800; color: var(--text-h);
    margin: 0; letter-spacing: -.3px;
}
.page-header__filters {
    display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.page-header > .d-flex { flex-wrap: wrap; gap: 8px; }

/* Page-header en dos filas (estudios) */
.page-header--estudios {
    display: flex; flex-direction: column;
    gap: 8px; margin-bottom: 14px;
}
.page-header--estudios .ph-row1 {
    display: flex; align-items: center;
    justify-content: space-between; gap: 10px;
}
.page-header--estudios .ph-left  { display: flex; align-items: center; gap: 10px; }
.page-header--estudios .ph-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.page-header--estudios .ph-row2  { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* ══════════════════════════════════════════════════════════════



/* ── Header user dropdown ────────────────────────────────────────── */
.hdr-user-btn {
    display: flex; align-items: center; gap: 9px;
    background: transparent; border: none;
    border-radius: 8px; padding: 0 10px 0 6px;
    height: 38px;
    cursor: pointer;
    transition: background .15s;
}
.hdr-user-btn:hover, .hdr-user-btn[aria-expanded="true"] {
    background: rgba(0,0,0,.06);
}
.hdr-user-btn[aria-expanded="true"] .hdr-user-caret { transform: rotate(180deg); }
.hdr-user-avatar {
    width: 30px; height: 30px; border-radius: 50%;
    background: #063C41; color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; flex-shrink: 0;
}
.hdr-user-info { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.25; }
.hdr-user-name  { font-size: 13px; font-weight: 600; color: #000; }
.hdr-user-role  { font-size: 10px; font-weight: 500; color: #222; text-transform: uppercase; letter-spacing: .3px; }
.hdr-user-caret { font-size: 9px; color: #000; transition: transform .15s; }

.hdr-user-menu {
    min-width: 230px; padding: 6px;
    border-radius: 14px; border: none;
    box-shadow: 0 16px 48px rgba(0,0,0,.15), 0 0 0 1px rgba(0,0,0,.05);
    overflow: hidden;
}
.hdr-user-menu__header {
    padding: 14px;
    background: linear-gradient(135deg, #063C41 0%, #0a5058 100%);
    border-radius: 9px;
    margin-bottom: 5px;
    display: flex; flex-direction: row; align-items: center; gap: 11px;
}
.hdr-user-menu__avatar {
    width: 38px; height: 38px; border-radius: 50%;
    background: rgba(255,255,255,.15);
    border: 1.5px solid rgba(255,255,255,.25);
    display: flex; align-items: center; justify-content: center;
    font-size: 15px; color: #fff; flex-shrink: 0;
}
.hdr-user-menu__info    { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.hdr-user-menu__name    { font-size: 13.5px; font-weight: 700; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hdr-user-menu__role    { font-size: 10px; font-weight: 600; color: #00D2BE; text-transform: uppercase; letter-spacing: .5px; }
.hdr-user-menu .dropdown-item {
    padding: 10px 13px; font-size: 13.5px; font-weight: 500;
    display: flex; align-items: center;
    border-radius: 8px; margin: 1px 0;
    color: #0d1117;
    transition: background .1s;
}
.hdr-user-menu .dropdown-item:hover { background: #f0f4f8; color: #063C41; }
.hdr-user-menu .dropdown-item i { width: 18px; text-align: center; color: #94a3b8; }
.hdr-user-menu .dropdown-item:hover i { color: #063C41; }
.hdr-user-menu .dropdown-item.text-danger { color: #dc2626 !important; }
.hdr-user-menu .dropdown-item.text-danger:hover { background: #fef2f2; }
.hdr-user-menu .dropdown-item.text-danger:hover i { color: #dc2626; }