/* ============================================================
   EDUMASTER — Estilos globales
   Paleta: sidebar oscuro #0f172a | fondo #f1f5f9 | acento #2563eb
   Tipografía: Inter (Google Fonts)
   ============================================================ */

/* ---- Reset y base ---------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --sidebar-w:      240px;
    --topbar-h:       60px;

    /* Colores */
    --bg:             #f4f4f8;
    --surface:        #ffffff;
    --border:         #e4e4eb;
    --border-light:   #f0f0f5;

    --sidebar-bg:     #1a1a2e;
    --sidebar-hover:  #252542;
    --sidebar-active: #4f46e5;
    --sidebar-text:   #9b9bc0;
    --sidebar-label:  #5a5a7a;
    --sidebar-icon:   #6b6b8f;

    --accent:         #4f46e5;
    --accent-hover:   #4338ca;
    --accent-light:   #ede9fe;
    --accent-text:    #3730a3;

    --text-primary:   #1a1a2e;
    --text-secondary: #5a5a7a;
    --text-muted:     #9b9bc0;

    --success:        #16a34a;
    --success-bg:     #dcfce7;
    --warning:        #d97706;
    --warning-bg:     #fef3c7;
    --danger:         #dc2626;
    --danger-bg:      #fee2e2;
    --info:           #0284c7;
    --info-bg:        #e0f2fe;

    /* Sombras */
    --shadow-sm:   0 1px 4px rgba(79,70,229,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow:      0 4px 12px rgba(79,70,229,.08), 0 2px 4px rgba(0,0,0,.04);
    --shadow-lg:   0 12px 32px rgba(0,0,0,.12);

    /* Radio */
    --radius-sm:  8px;
    --radius:     12px;
    --radius-lg:  16px;

    /* Transición */
    --ease: .16s ease;
}

html { font-size: 16px; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: .9375rem;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; display: block; }

/* ---- Layout principal ------------------------------------ */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ---- Sidebar --------------------------------------------- */
.sidebar {
    width: var(--sidebar-w);
    height: 100vh;
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    z-index: 100;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: #334155 transparent;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: #334155; border-radius: 4px; }

/* Brand */
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 14px 14px;
    border-bottom: 1px solid #1e293b;
    flex-shrink: 0;
}

.brand-icon {
    width: 34px; height: 34px;
    background: var(--accent);
    color: #fff;
    font-size: .95rem;
    font-weight: 800;
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    letter-spacing: -.5px;
    box-shadow: 0 2px 8px rgba(79,70,229,.4);
}

.brand-name {
    font-size: .85rem;
    font-weight: 700;
    color: #f8fafc;
    letter-spacing: .5px;
    white-space: nowrap;
}

/* User block below brand */
.sidebar-user-top {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 10px 16px;
    border-bottom: 1px solid #1e293b;
}
.user-avatar-sm {
    width: 28px; height: 28px;
    background: var(--accent);
    color: #fff;
    font-size: .78rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.sidebar-user-top-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}
.sidebar-user-top-name {
    font-size: .8rem;
    font-weight: 600;
    color: #e2e8f0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sidebar-logout-link {
    font-size: .67rem;
    color: rgba(148,163,184,.6);
    text-decoration: none;
    transition: color var(--ease);
}
.sidebar-logout-link:hover { color: #f87171; }

.user-avatar-photo {
    width: 28px; height: 28px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

/* Collapse toggle button */
.sidebar-collapse-btn {
    flex-shrink: 0;
    width: 26px; height: 26px;
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 6px;
    color: rgba(148,163,184,.8);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background var(--ease), color var(--ease);
    margin-left: auto;
}
.sidebar-collapse-btn:hover { background: rgba(255,255,255,.12); color: #f8fafc; }
.sidebar-collapse-btn svg { transition: transform .25s ease; flex-shrink: 0; }

/* ── Collapsed sidebar ─────────────────────────────────────────── */
body.sidebar-collapsed .sidebar {
    width: 60px;
    overflow-x: hidden;
}
body.sidebar-collapsed .main-wrapper {
    margin-left: 60px;
}
body.sidebar-collapsed .sidebar-text,
body.sidebar-collapsed .sidebar-user-top-info,
body.sidebar-collapsed .nav-label,
body.sidebar-collapsed .nav-text,
body.sidebar-collapsed .nav-sub {
    display: none;
}
body.sidebar-collapsed .sidebar-brand {
    padding: 16px 0;
    justify-content: center;
    gap: 0;
}
body.sidebar-collapsed .sidebar-collapse-btn {
    display: none; /* hide toggle btn — topbar btn takes over */
}
body.sidebar-collapsed .sidebar-user-top {
    justify-content: center;
    padding: 10px 0;
}
body.sidebar-collapsed .nav-group {
    padding-top: 4px;
}
body.sidebar-collapsed .nav-item {
    justify-content: center;
    padding: 10px 0;
    border-radius: 0;
}
body.sidebar-collapsed .nav-item-parent {
    background: none;
    border-left: none;
}
body.sidebar-collapsed .sidebar-nav {
    padding: 4px 8px;
}

/* ── Collapsed sidebar: JS tooltip (appended to body) ─────────── */
.sidebar-tooltip {
    position: fixed;
    background: #1e293b;
    color: #f1f5f9;
    font-size: .78rem;
    font-weight: 500;
    white-space: nowrap;
    padding: 5px 10px;
    border-radius: 6px;
    box-shadow: 0 4px 14px rgba(0,0,0,.35);
    pointer-events: none;
    z-index: 9999;
    opacity: 0;
    transition: opacity .12s ease;
}
.sidebar-tooltip.visible { opacity: 1; }
.sidebar-tooltip::before {
    content: '';
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 5px solid transparent;
    border-right-color: #1e293b;
}

/* Topbar collapse button (visible only when sidebar is collapsed) */
.topbar-collapse-btn {
    display: none;
    width: 32px; height: 32px;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    align-items: center; justify-content: center;
    transition: background var(--ease), color var(--ease);
    flex-shrink: 0;
}
.topbar-collapse-btn:hover { background: var(--bg); color: var(--text-primary); }
body.sidebar-collapsed .topbar-collapse-btn { display: flex; }

/* Sidebar width transition */
.sidebar,
.main-wrapper {
    transition: width .22s ease, margin-left .22s ease;
}

/* Nav sub-items */
.nav-item-parent {
    color: #e2e8f0;
    background: var(--sidebar-hover);
}
.nav-item-parent svg { color: #94a3b8; }

.nav-sub {
    margin: 2px 0 4px 28px;
    padding-left: 10px;
    border-left: 1px solid rgba(255,255,255,.08);
}
.nav-sub-item {
    display: block;
    padding: 5px 10px;
    font-size: .78rem;
    font-weight: 500;
    color: var(--sidebar-text);
    border-radius: 6px;
    transition: background var(--ease), color var(--ease);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 1px;
}
.nav-sub-item:hover  { background: var(--sidebar-hover); color: #e2e8f0; }
.nav-sub-item.active { background: rgba(79,70,229,.3); color: #c7d2fe; font-weight: 600; }

/* Nav */
.sidebar-nav {
    flex: 1;
    padding: 12px 0;
}

.nav-group {
    padding: 0 12px 4px;
    margin-bottom: 4px;
}

.nav-label {
    display: block;
    font-size: .625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--sidebar-label);
    padding: 10px 8px 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    color: var(--sidebar-text);
    font-size: .8125rem;
    font-weight: 500;
    transition: background var(--ease), color var(--ease);
    white-space: nowrap;
    overflow: hidden;
}

.nav-item svg {
    flex-shrink: 0;
    color: var(--sidebar-icon);
    transition: color var(--ease);
}

.nav-item:hover {
    background: var(--sidebar-hover);
    color: #e2e8f0;
}

.nav-item:hover svg { color: #94a3b8; }

.nav-item.active {
    background: var(--accent);
    color: #fff;
}

.nav-item.active svg { color: #fff; }

/* Footer del sidebar */
.sidebar-footer {
    padding: 14px 16px;
    border-top: 1px solid #1e293b;
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.user-avatar {
    width: 32px; height: 32px;
    background: var(--accent);
    color: #fff;
    font-size: .75rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}

.user-details {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.user-name {
    font-size: .8rem;
    font-weight: 600;
    color: #e2e8f0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: .7rem;
    color: var(--sidebar-text);
}

.logout-btn {
    color: var(--sidebar-icon);
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: color var(--ease), background var(--ease);
    flex-shrink: 0;
}

.logout-btn:hover {
    color: #f87171;
    background: rgba(239,68,68,.12);
}

/* ---- Main wrapper ---------------------------------------- */
.main-wrapper {
    margin-left: var(--sidebar-w);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ---- Topbar ----------------------------------------------- */
.topbar {
    height: var(--topbar-h);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 1px 0 var(--border);
}

/* Identidad del colegio en el topbar */
.topbar-identity {
    display: flex;
    align-items: center;
    gap: 10px;
}
.topbar-school-logo {
    height: 38px;
    width: auto;
    max-width: 54px;
    object-fit: contain;
    flex-shrink: 0;
}
.topbar-school-initial {
    width: 38px; height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), #4c6ef5);
    color: #fff;
    font-size: 1.1rem;
    font-weight: 800;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.topbar-identity-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 0;
}
.topbar-school-name {
    font-size: .92rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}
.topbar-page-path {
    font-size: .72rem;
    color: var(--text-muted);
    white-space: nowrap;
    line-height: 1.2;
}
.topbar-section { font-weight: 500; }
.topbar-sep { opacity: .6; }

/* ya no se usa como h1 */
.page-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.school-name {
    font-size: .8rem;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 4px 10px;
    background: var(--bg);
    border-radius: 20px;
    border: 1px solid var(--border);
}

/* ---- Selector de período en topbar ----------------------- */
.periodo-selector {
    display: flex;
    align-items: center;
    gap: 7px;
    background: var(--accent-light);
    border: 1px solid #bfdbfe;
    border-radius: 20px;
    padding: 4px 12px 4px 10px;
    color: var(--accent-text);
}

.periodo-selector svg { flex-shrink: 0; }

.periodo-selector select {
    background: transparent;
    border: none;
    outline: none;
    font-family: inherit;
    font-size: .8rem;
    font-weight: 600;
    color: var(--accent-text);
    cursor: pointer;
    max-width: 200px;
}

/* ---- Contenido ------------------------------------------- */
.content {
    padding: 24px 28px;
    flex: 1;
}

/* ---- Cards ----------------------------------------------- */
.card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.card-header {
    padding: 14px 20px 12px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.card-title {
    font-size: .9375rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body { padding: 16px 20px; }

.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border-light);
    background: var(--bg);
    border-radius: 0 0 var(--radius) var(--radius);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* ---- Dashboard: grilla de módulos ------------------------ */
.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
    margin-top: 8px;
}

.module-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 20px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
    color: var(--text-primary);
    font-weight: 500;
    font-size: .875rem;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--ease), border-color var(--ease), transform var(--ease);
}

.module-card:hover {
    box-shadow: var(--shadow);
    border-color: var(--accent);
    transform: translateY(-2px);
    color: var(--accent);
}

.module-card .module-icon {
    width: 44px; height: 44px;
    background: var(--accent-light);
    color: var(--accent-text);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
}

/* ---- Stats row ------------------------------------------- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 22px;
    box-shadow: var(--shadow-sm);
}

.stat-label {
    font-size: .75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 6px;
}

.stat-value {
    font-size: clamp(.85rem, 1.8vw, 1.75rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    display: block;
}

.stat-sub {
    font-size: .75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ---- Botones --------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    font-family: inherit;
    font-size: .875rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background var(--ease), border-color var(--ease),
                box-shadow var(--ease), transform var(--ease);
    white-space: nowrap;
    line-height: 1.4;
}

.btn:active { transform: scale(.98); }

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(79,70,229,.25);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; box-shadow: 0 4px 12px rgba(79,70,229,.35); }

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border-color: var(--border);
}
.btn-secondary:hover { background: var(--bg); border-color: #c4c4d4; color: var(--text-primary); }

.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}
.btn-danger:hover { background: #b91c1c; border-color: #b91c1c; color: #fff; }

.btn-ghost {
    background: var(--bg);
    color: var(--text-secondary);
    border-color: transparent;
}
.btn-ghost:hover { background: var(--border); color: var(--text-primary); }

.btn-xs { padding: 3px 9px; font-size: .75rem; border-radius: 6px; }
.btn-sm { padding: 6px 12px; font-size: .8125rem; }
.btn-lg { padding: 12px 24px; font-size: 1rem; font-weight: 600; }

.btn-block { width: 100%; justify-content: center; }

/* ---- Formularios ----------------------------------------- */
.form-group { margin-bottom: 14px; }

.form-label {
    display: block;
    font-size: .8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 5px;
    letter-spacing: .01em;
}

.form-label.required::after {
    content: ' *';
    color: var(--danger);
}

.form-control {
    display: block;
    width: 100%;
    padding: 8px 12px;
    font-family: inherit;
    font-size: .875rem;
    color: var(--text-primary);
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    transition: border-color var(--ease), box-shadow var(--ease);
    outline: none;
    line-height: 1.5;
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}

.form-control::placeholder { color: var(--text-muted); }
.form-control:disabled { background: var(--bg); color: var(--text-muted); cursor: not-allowed; }

select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 90px; }

.form-hint {
    font-size: .75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-error {
    font-size: .75rem;
    color: var(--danger);
    margin-top: 4px;
}

.form-control.is-invalid { border-color: var(--danger); }
.form-control.is-invalid:focus { box-shadow: 0 0 0 3px rgba(220,38,38,.12); }

/* ---- Alertas --------------------------------------------- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: .8125rem;
    font-weight: 500;
    margin-bottom: 16px;
    border: 1px solid transparent;
}

.alert-success  { background: var(--success-bg); color: var(--success);  border-color: #bbf7d0; }
.alert-error    { background: var(--danger-bg);  color: var(--danger);   border-color: #fecaca; }
.alert-warning  { background: var(--warning-bg); color: var(--warning);  border-color: #fde68a; }
.alert-info     { background: var(--info-bg);    color: var(--info);     border-color: #bae6fd; }

.alert-floating {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    min-width: 300px;
    box-shadow: var(--shadow);
    z-index: 999;
}

/* ---- Tablas ---------------------------------------------- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: .875rem;
}

thead {
    background: var(--bg);
}

th {
    padding: 11px 16px;
    text-align: left;
    font-size: .7rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: .07em;
    white-space: nowrap;
    border-bottom: 1px solid var(--border);
}

td {
    padding: 13px 16px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
}

tr:last-child td { border-bottom: none; }

tbody tr:hover { background: #f7f7fc; }

/* ---- Badges ---------------------------------------------- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 9px;
    font-size: .6875rem;
    font-weight: 600;
    border-radius: 20px;
    white-space: nowrap;
}

.badge-success  { background: var(--success-bg); color: var(--success); }
.badge-danger   { background: var(--danger-bg);  color: var(--danger);  }
.badge-warning  { background: var(--warning-bg); color: var(--warning); }
.badge-info     { background: var(--info-bg);    color: var(--info);    }
.badge-neutral  { background: var(--bg); color: var(--text-secondary); border: 1px solid var(--border); }

/* ---- Paginación ------------------------------------------ */
.pagination {
    display: flex;
    align-items: center;
    gap: 4px;
    justify-content: center;
    padding: 16px 0 4px;
}

.page-link {
    padding: 6px 11px;
    font-size: .8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    transition: background var(--ease), border-color var(--ease), color var(--ease);
}

.page-link:hover   { background: var(--bg); color: var(--text-primary); }
.page-link.active  { background: var(--accent); border-color: var(--accent); color: #fff; }
.page-link.disabled { opacity: .4; pointer-events: none; }

/* ---- Page header (título + acciones) --------------------- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    gap: 16px;
    flex-wrap: wrap;
}

.page-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -.02em;
}

/* ---- Breadcrumb ------------------------------------------ */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: .75rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--border); }

/* ============================================================
   Página de login (layout blank)
   ============================================================ */
.page-blank {
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 44px 40px;
    width: 100%;
    max-width: 400px;
}

.login-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 28px;
    justify-content: center;
}

.login-brand .brand-icon {
    width: 40px; height: 40px;
    font-size: 1.1rem;
}

.login-brand .brand-name {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: .5px;
}

.login-box h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    text-align: center;
}

.login-sub {
    font-size: .8125rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 28px;
}

.login-box .btn-primary {
    padding: 11px 16px;
    font-size: .9rem;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
}

.login-footer a {
    font-size: .8rem;
    color: var(--text-secondary);
}

.login-footer a:hover { color: var(--accent); }

/* ============================================================
   Utilidades
   ============================================================ */
.flex         { display: flex; }
.flex-center  { display: flex; align-items: center; justify-content: center; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2        { gap: 8px; }
.gap-3        { gap: 12px; }
.mt-1         { margin-top: 4px; }
.mt-2         { margin-top: 8px; }
.mt-4         { margin-top: 16px; }
.mb-4         { margin-bottom: 16px; }
.mb-6         { margin-bottom: 24px; }
.text-muted   { color: var(--text-muted); }
.text-small   { font-size: .75rem; }
.text-right   { text-align: right; }
.font-medium  { font-weight: 500; }
.font-bold    { font-weight: 700; }
.w-full       { width: 100%; }
.truncate     { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 20px 0;
}

/* ---- Avatar de estudiante -------------------------------- */
.student-avatar {
    width: 34px; height: 34px;
    background: #bfdbfe;
    color: #1e40af;
    font-size: .78rem;
    font-weight: 700;
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}
.student-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }

.student-avatar.female { background: #fce7f3; color: #9d174d; }

.student-avatar-lg {
    width: 56px; height: 56px;
    background: #bfdbfe;
    color: #1e40af;
    font-size: 1.4rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}

.student-avatar-lg.female { background: #fce7f3; color: #9d174d; }

/* ---- Perfil de estudiante / familia ---------------------- */
.profile-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
}

@media (max-width: 900px) { .profile-grid { grid-template-columns: 1fr; } }

/* ---- Fila de tutor --------------------------------------- */
.tutor-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 22px;
    border-bottom: 1px solid var(--border-light);
}

.tutor-row:last-of-type { border-bottom: none; }

/* ---- Formularios de 3 columnas --------------------------- */
.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0 16px;
}

/* ---- Barra de filtros ------------------------------------ */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

/* ---- Footer de formularios largos ------------------------ */
.form-footer-actions {
    display: flex;
    gap: 10px;
    padding: 20px 0;
}

/* ---- Sub-navegación (tabs dentro de un módulo) ----------- */
.subnav {
    display: flex;
    gap: 2px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 4px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.subnav-item {
    padding: 7px 15px;
    border-radius: calc(var(--radius-sm) - 2px);
    font-size: .8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: background var(--ease), color var(--ease);
    white-space: nowrap;
}

.subnav-item:hover  { background: var(--bg); color: var(--text-primary); }
.subnav-item.active { background: var(--accent); color: #fff; box-shadow: 0 2px 6px rgba(79,70,229,.3); }

/* ---- Layout de 2 columnas (lista + formulario) ----------- */
.layout-2col {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 20px;
    align-items: start;
}
.layout-2col > * { min-width: 0; }

@media (max-width: 900px) {
    .layout-2col { grid-template-columns: 1fr; }
}

/* ---- Formularios en 2 columnas --------------------------- */
.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 16px;
}

/* ---- Info grid (ficha de datos) -------------------------- */
.info-grid { display: flex; flex-direction: column; gap: 0; }

.info-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-light);
    align-items: baseline;
}

.info-row:last-child { border-bottom: none; }

.info-label {
    font-size: .8rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.info-value {
    font-size: .875rem;
    color: var(--text-primary);
}

/* ---- Helpers de espaciado usados en vistas --------------- */
.text-center { text-align: center; }

/* ============================================================
   RESPONSIVE — Mobile first
   Breakpoints: 768px (tablet) / 480px (móvil pequeño)
   ============================================================ */

/* Botón hamburguesa — oculto en desktop */
.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    line-height: 0;
}
.sidebar-toggle:hover { background: var(--bg); color: var(--text-primary); }

/* Overlay para cerrar sidebar en móvil */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 99;
}
.sidebar-overlay.active { display: block; }

/* Ocultar en móvil muy pequeño */
.d-hide-xs { }

@media (max-width: 768px) {

    /* Sidebar: se desliza desde la izquierda */
    .sidebar {
        transform: translateX(-100%);
        transition: transform .25s ease;
        z-index: 200;
    }

    .sidebar.open {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0,0,0,.3);
    }

    /* Mostrar botón hamburguesa */
    .sidebar-toggle { display: flex; }

    /* El contenido ocupa todo el ancho */
    .main-wrapper { margin-left: 0; }

    /* Topbar */
    .topbar { padding: 0 16px; }
    .page-title { font-size: .9rem; }

    /* Ocultar nombre del colegio en pantallas pequeñas */
    .d-hide-xs { display: none !important; }

    /* Selector de período más compacto */
    .periodo-selector select { max-width: 130px; font-size: .75rem; }

    /* Contenido */
    .content { padding: 16px; }

    /* Layouts de 2 y 3 columnas → 1 columna */
    .layout-2col        { grid-template-columns: 1fr; }
    .form-row-2         { grid-template-columns: 1fr; }
    .form-row-3         { grid-template-columns: 1fr; }
    .stats-grid         { grid-template-columns: 1fr 1fr; }
    .module-grid        { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
    .profile-grid       { grid-template-columns: 1fr; }

    /* Subnav: scroll horizontal */
    .subnav {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding: 4px;
        gap: 2px;
        scrollbar-width: none;
    }
    .subnav::-webkit-scrollbar { display: none; }
    .subnav-item { white-space: nowrap; padding: 6px 12px; font-size: .75rem; }

    /* Tablas: scroll horizontal */
    .table-wrapper { overflow-x: auto; }
    table { min-width: 500px; }

    /* Page header */
    .page-header { flex-direction: column; align-items: flex-start; gap: 10px; }
    .page-header .row-actions { width: 100%; justify-content: flex-start; }

    /* Acciones en tabla más compactas */
    .row-actions { gap: 4px; }
    .btn-sm { padding: 4px 8px; font-size: .72rem; }

    /* Info grid */
    .info-row { grid-template-columns: 120px 1fr; }

    /* Breadcrumb */
    .breadcrumb { font-size: .7rem; flex-wrap: wrap; }

    /* Cards */
    .card-header { padding: 14px 16px 10px; }
    .card-body   { padding: 14px 16px; }
    .card-footer { padding: 12px 16px; }

    /* Formulario footer */
    .form-footer-actions { flex-direction: column; }
    .form-footer-actions .btn { width: 100%; justify-content: center; }

    /* Paginación */
    .pagination { gap: 3px; flex-wrap: wrap; }
    .page-link  { padding: 5px 9px; font-size: .75rem; }

    /* Sidebar colapsado no debe afectar el margen en móvil —
       el sidebar es un overlay, no empuja el contenido */
    body.sidebar-collapsed .main-wrapper { margin-left: 0; }
    body.sidebar-collapsed .sidebar      { width: var(--sidebar-w); overflow-x: visible; }
    body.sidebar-collapsed .topbar-collapse-btn { display: none; }

}

@media (max-width: 480px) {

    .stats-grid   { grid-template-columns: 1fr 1fr; }
    .module-grid  { grid-template-columns: 1fr 1fr; }
    .module-card  { padding: 18px 12px 14px; font-size: .8rem; }
    .module-card .module-icon { width: 38px; height: 38px; }

    .login-box { padding: 28px 20px; }

    /* Ocultar columnas secundarias en tablas */
    .col-hide-xs { display: none; }

}

/* ---- Permisos: matriz por módulo ------------------------- */
.perm-module {
    border-bottom: 1px solid var(--border-light);
}

.perm-module:last-child { border-bottom: none; }

.perm-module-header {
    padding: 8px 22px;
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--text-secondary);
    background: var(--bg);
}

.perm-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 9px 22px;
    cursor: pointer;
    transition: background var(--ease);
}

.perm-item:hover { background: var(--bg); }

.perm-item input[type="checkbox"] {
    margin-top: 2px;
    accent-color: var(--accent);
    width: 15px; height: 15px;
    flex-shrink: 0;
    cursor: pointer;
}

.perm-name  { display: block; font-size: .8125rem; font-weight: 500; color: var(--text-primary); }
.perm-desc  { display: block; font-size: .75rem; color: var(--text-muted); }

/* Chips de permisos en el listado de roles */
.permisos-chips { display: flex; flex-wrap: wrap; gap: 5px; }

/* Card en modo edición */
.card-editing { border-color: var(--accent); }
.card-editing .card-header { background: var(--accent-light); }

/* ---- Fila en modo edición -------------------------------- */
tr.row-editing td {
    background: var(--accent-light);
}

tr.row-editing td:first-child {
    border-left: 3px solid var(--accent);
}

/* ---- Acciones inline en tabla ---------------------------- */
.row-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    justify-content: flex-end;
}

/* Botón eliminar fantasma con color peligro */
.btn-danger-ghost {
    color: var(--danger);
}

.btn-danger-ghost:hover {
    background: var(--danger-bg);
    color: var(--danger);
}

/* ---- Botones icono en tabla ------------------------------ */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background var(--ease), color var(--ease), border-color var(--ease);
    text-decoration: none;
    vertical-align: middle;
}

.btn-icon:hover {
    background: var(--bg);
    border-color: var(--border);
    color: var(--text-primary);
}

.btn-icon-danger {
    color: var(--danger);
}

.btn-icon-danger:hover {
    background: var(--danger-bg);
    border-color: var(--danger);
    color: var(--danger);
}

td.actions {
    white-space: nowrap;
    text-align: right;
    width: 1%;
}

/* ---- Código / badge de código ---------------------------- */
.code-badge {
    display: inline-block;
    font-family: 'SF Mono', 'Fira Mono', monospace;
    font-size: .75rem;
    font-weight: 600;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1px 7px;
    color: var(--text-secondary);
    letter-spacing: .03em;
}

/* ---- Badge primary --------------------------------------- */
.badge-primary { background: var(--accent-light); color: var(--accent); }

/* ============================================================
   MODAL SYSTEM
   ============================================================ */

.modal-wrap {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9000;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.modal-wrap.is-open {
    display: flex;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, .45);
    animation: overlayIn .15s ease;
}

@keyframes overlayIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.modal {
    position: relative;
    z-index: 1;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: 0 24px 64px rgba(0, 0, 0, .24);
    width: 100%;
    max-width: 580px;
    max-height: 92vh;
    overflow-y: auto;
    animation: modalIn .18s ease;
}

.modal-lg { max-width: 760px; }
.modal-sm { max-width: 420px; }

@keyframes modalIn {
    from { opacity: 0; transform: translateY(-12px) scale(.98); }
    to   { opacity: 1; transform: translateY(0)     scale(1);   }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 18px;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: var(--surface);
    z-index: 1;
}

.modal-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background var(--ease), color var(--ease);
}

.modal-close:hover {
    background: var(--bg);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
    text-wrap: balance;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    background: var(--surface);
}

/* Responsive */
@media (max-width: 600px) {
    .modal-wrap { padding: 0; align-items: flex-end; }
    .modal, .modal-lg, .modal-sm { max-width: 100%; border-radius: var(--radius) var(--radius) 0 0; max-height: 95vh; }
}

/* ── Inputs numéricos: quitar flechas en todo el sitio ───────── */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"] { -moz-appearance: textfield; appearance: textfield; }

/* ── Sprint A: nuevos componentes ────────────────────────────── */

/* Subtítulo de página */
.page-subtitle {
    font-size: .85rem;
    color: var(--text-muted);
    margin: 4px 0 0;
}

/* Banner informativo */
.info-banner {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
    border-radius: var(--radius);
    font-size: .855rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.info-banner svg { flex-shrink: 0; margin-top: 1px; color: var(--accent); }

/* Icono de ayuda inline (?) */
.help-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    font-size: .7rem;
    font-weight: 700;
    border-radius: 50%;
    background: var(--border);
    color: var(--text-muted);
    cursor: default;
    vertical-align: middle;
    margin-left: 4px;
    line-height: 1;
    position: relative;
}
.help-icon:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* Tooltip del help-icon */
.help-icon::after {
    content: attr(data-tip);
    position: absolute;
    bottom: calc(100% + 7px);
    left: 50%;
    transform: translateX(-50%);
    background: #111;
    color: #fff;
    font-size: .78rem;
    font-weight: 400;
    line-height: 1.45;
    white-space: normal;
    width: 230px;
    padding: 8px 11px;
    border-radius: 6px;
    box-shadow: 0 4px 16px rgba(0,0,0,.25);
    pointer-events: none;
    opacity: 0;
    transition: opacity .15s, transform .15s;
    transform: translateX(-50%) translateY(4px);
    z-index: 9999;
    text-align: left;
}
.help-icon::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: #111;
    pointer-events: none;
    opacity: 0;
    transition: opacity .15s;
    z-index: 9999;
}
.help-icon:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.help-icon:hover::before { opacity: 1; }

/* Grupo de checkboxes descriptivos */
.checks-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.check-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-size: .875rem;
}
.check-item input[type="checkbox"] { flex-shrink: 0; margin-top: 3px; }
.check-item strong { display: block; font-weight: 600; color: var(--text-primary); }
.check-item small { display: block; color: var(--text-muted); font-size: .8rem; margin-top: 1px; }

/* Feriados inline en períodos */
.feriados-table { width: 100%; border-collapse: collapse; font-size: .855rem; }
.feriados-table th { text-align: left; padding: 6px 8px; font-weight: 600; color: var(--text-muted); border-bottom: 1px solid var(--border); }
.feriados-table td { padding: 6px 8px; border-bottom: 1px solid var(--border); }
.feriados-table tr:last-child td { border-bottom: none; }

/* Días laborales */
.dias-laborales {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.dia-check {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    font-size: .75rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
}
.dia-check input[type="checkbox"] { display: none; }
.dia-check-box {
    width: 34px;
    height: 34px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .8rem;
    font-weight: 700;
    color: var(--text-muted);
    background: var(--surface);
    transition: background .15s, border-color .15s, color .15s;
}
.dia-check input:checked + .dia-check-box {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.dia-check:hover .dia-check-box { border-color: var(--accent); }

/* ── Acordeón de grados ───────────────────────────────────────*/
.accordion-table .grado-row:hover { background: var(--bg); }
.accordion-table .grado-row.is-open { background: color-mix(in srgb, var(--accent) 4%, transparent); }
.accordion-table .grado-row.is-open td { border-bottom: none; }
.accordion-row > td { padding: 0 !important; }
.accordion-body {
    padding: 12px 16px 16px 52px;
    border-bottom: 1px solid var(--border);
}

/* ── Tabs de formulario ───────────────────────────────────────*/
.form-tabs { display:flex; flex-wrap:wrap; gap:2px; border-bottom:2px solid var(--border); margin-bottom:24px; width:100%; min-width:0; position:sticky; top:0; z-index:10; background:var(--card-bg,#fff); }
.form-tab-btn {
    padding:9px 16px; font-size:.85rem; font-weight:600; color:var(--text-muted);
    background:none; border:none; border-bottom:2px solid transparent;
    cursor:pointer; white-space:nowrap; transition:color .15s, border-color .15s;
    margin-bottom:-2px; flex-shrink:0;
}
.form-tab-btn:hover { color:var(--text-primary); }
.form-tab-btn.active { color:var(--accent); border-bottom-color:var(--accent); }
@media (max-width:640px) {
    .form-tab-btn { padding:8px 10px; font-size:.76rem; }
}
@media (max-width:400px) {
    .form-tab-btn { padding:7px 8px; font-size:.72rem; }
}
.form-tab-pane { display:none; }
.form-tab-pane.active { display:block; }

/* ── Upload de logo — grid de cards ──────────────────────────*/
.logo-upload-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media (max-width:640px) {
    .logo-upload-grid { grid-template-columns:1fr; }
    .logo-upload-zone { height:120px; }
}

.logo-upload-card {
    border:1.5px solid var(--border); border-radius:var(--radius);
    overflow:hidden; background:var(--surface); transition:border-color .15s;
}
.logo-upload-card.drag-over { border-color:var(--accent); background:color-mix(in srgb, var(--accent) 5%, var(--surface)); }

.logo-upload-header { padding:10px 14px 8px; border-bottom:1px solid var(--border); }
.logo-upload-title  { font-size:.82rem; font-weight:700; color:var(--text-primary); }
.logo-upload-desc   { font-size:.72rem; color:var(--text-muted); margin-top:2px; line-height:1.4; }

.logo-upload-zone {
    height:150px; display:flex; align-items:center; justify-content:center;
    cursor:pointer; position:relative; background:#fff;
    transition:background .15s;
}
.logo-upload-zone:hover { background:color-mix(in srgb, var(--accent) 4%, #fff); }
.logo-upload-zone input[type="file"] { display:none; }

.logo-upload-empty { text-align:center; pointer-events:none; padding:10px; }
.logo-upload-empty svg { display:block; margin:0 auto 8px; color:var(--border); }
.logo-upload-empty-text { font-size:.78rem; font-weight:600; color:var(--text-muted); margin-bottom:2px; }
.logo-upload-empty-hint { font-size:.7rem; color:var(--text-muted); }

.logo-upload-img { max-width:90%; max-height:130px; object-fit:contain; display:block; }

.logo-upload-x {
    position:absolute; top:7px; right:7px;
    width:22px; height:22px; border-radius:50%;
    background:rgba(0,0,0,.45); color:#fff; border:none;
    cursor:pointer; display:flex; align-items:center; justify-content:center;
    transition:background .15s; z-index:1;
}
.logo-upload-x:hover { background:rgba(220,38,38,.85); }

.logo-upload-footer { padding:7px 12px; border-top:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; gap:8px; min-height:36px; }
.logo-upload-status { font-size:.72rem; color:var(--text-muted); }