/**
 * Archivo    : estilos.css
 * Path       : webapp_seguimiento/public/css/estilos.css
 * Creado     : 2026-06-01
 * Actualizado: 2026-06-01
 * Resumen    : Sistema de diseño base de la renovación (imagen nueva).
 *              Define variables CSS (paleta, tipografía, sombras, radios),
 *              estilos del navbar, tarjetas del dashboard, login y footer.
 *              Imagen profesional, limpia y cohesiva sobre Bootstrap 5.3.
 *
 * Historial de cambios:
 *   2026-06-01 Creación. Tokens de diseño, navbar, cards de dashboard, login,
 *              footer y micro-interacciones.
 */

/* ============================================================
   1. TOKENS DE DISEÑO (variables)
   ============================================================ */
:root {
    /* Paleta: azul pizarra profundo como color dominante + acento ámbar */
    --c-primary:        #1e3a5f;   /* azul pizarra (dominante) */
    --c-primary-dark:   #14283f;
    --c-primary-light:  #2d5482;
    --c-accent:         #e0a458;   /* ámbar cálido (acento) */
    --c-accent-dark:    #c8893d;

    --c-success:        #2f8f5b;
    --c-warning:        #d9a441;
    --c-danger:         #c0473f;
    --c-info:           #3a7ca5;

    --c-bg:             #f4f6f9;   /* fondo general */
    --c-surface:        #ffffff;   /* tarjetas / superficies */
    --c-text:           #233140;   /* texto principal */
    --c-text-muted:     #6b7a89;   /* texto secundario */
    --c-border:         #e2e8f0;

    /* Tipografía: display distintiva + cuerpo legible */
    --font-display: 'Fraunces', Georgia, serif;
    --font-body:    'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Radios y sombras */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(30, 58, 95, 0.08);
    --shadow-md: 0 6px 18px rgba(30, 58, 95, 0.10);
    --shadow-lg: 0 14px 40px rgba(30, 58, 95, 0.16);

    --transition: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   2. BASE
   ============================================================ */
body {
    font-family: var(--font-body);
    background-color: var(--c-bg);
    color: var(--c-text);
    min-height: 100vh;
    margin: 0;
}

/* El app-shell ocupa toda la altura para fijar el footer al fondo */
.app-shell { min-height: 100vh; }

h1, h2, h3, .display-1, .display-4, .navbar-brand {
    font-family: var(--font-display);
    letter-spacing: -0.01em;
}

a {
    text-decoration: none;
}

/* ============================================================
   3. NAVBAR
   ============================================================ */
.navbar.app-navbar {
    background: linear-gradient(100deg, var(--c-primary-dark), var(--c-primary)) !important;
    box-shadow: var(--shadow-md);
}

.app-navbar .navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
    color: #fff;
    display: flex;
    align-items: center;
    gap: .5rem;
}

.app-navbar .navbar-brand .brand-badge {
    background: var(--c-accent);
    color: var(--c-primary-dark);
    font-family: var(--font-body);
    font-size: .7rem;
    font-weight: 700;
    padding: .15rem .5rem;
    border-radius: 999px;
    letter-spacing: .03em;
}

.app-navbar .nav-link {
    color: rgba(255, 255, 255, 0.82) !important;
    font-weight: 500;
    padding: .5rem .85rem !important;
    border-radius: var(--radius-sm);
    transition: background var(--transition), color var(--transition);
}

.app-navbar .nav-link:hover,
.app-navbar .nav-link.active {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.12);
}

.app-navbar .btn-logout {
    background: var(--c-accent);
    border: none;
    color: var(--c-primary-dark);
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: transform var(--transition), background var(--transition);
}

.app-navbar .btn-logout:hover {
    background: var(--c-accent-dark);
    transform: translateY(-1px);
}

/* ============================================================
   4. DASHBOARD: tarjetas de sección
   ============================================================ */
.dashboard-hero h1 {
    color: var(--c-primary);
}

.dashboard-hero .lead {
    color: var(--c-text-muted);
}

.section-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    height: 100%;
    transition: transform var(--transition), box-shadow var(--transition);
    animation: cardIn 480ms cubic-bezier(0.4, 0, 0.2, 1) both;
}

.section-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.section-card .card-header {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.05rem;
    color: #fff;
    padding: 1rem 1.25rem;
    border: none;
}

/* Cabeceras de color por sección */
.sc-academic   .card-header { background: var(--c-info); }
.sc-students   .card-header { background: var(--c-success); }
.sc-practice   .card-header { background: var(--c-warning); color: var(--c-primary-dark); }
.sc-admin      .card-header { background: var(--c-danger); }
.sc-tutoring   .card-header { background: var(--c-primary-light); }
.sc-feoe       .card-header { background: var(--c-primary-dark); }
.sc-upload     .card-header { background: #34404d; }

.section-card .list-group-item {
    border: none;
    border-bottom: 1px solid var(--c-border);
    padding: .7rem 1.25rem;
    color: var(--c-text);
    font-weight: 500;
    transition: background var(--transition), padding-left var(--transition);
}

.section-card .list-group-item:last-child {
    border-bottom: none;
}

.section-card .list-group-item:hover {
    background: var(--c-bg);
    padding-left: 1.6rem;
    color: var(--c-primary);
}

/* Animación de entrada escalonada */
@keyframes cardIn {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   5. LOGIN
   ============================================================ */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(1200px 600px at 20% -10%, rgba(45, 84, 130, 0.18), transparent),
        radial-gradient(900px 500px at 100% 110%, rgba(224, 164, 88, 0.16), transparent),
        var(--c-bg);
    padding: 1rem;
}

.login-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    animation: cardIn 520ms cubic-bezier(0.4, 0, 0.2, 1) both;
}

.login-card .login-logo {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--c-primary);
    text-align: center;
}

.login-card .form-control {
    border-radius: var(--radius-sm);
    padding: .65rem .9rem;
}

.login-card .form-control:focus {
    border-color: var(--c-primary-light);
    box-shadow: 0 0 0 .2rem rgba(45, 84, 130, 0.18);
}

.login-card .btn-login {
    background: var(--c-primary);
    border: none;
    color: #fff;
    font-weight: 600;
    border-radius: var(--radius-sm);
    padding: .65rem;
    transition: background var(--transition), transform var(--transition);
}

.login-card .btn-login:hover {
    background: var(--c-primary-dark);
    transform: translateY(-1px);
}

/* ============================================================
   6. FOOTER
   ============================================================ */
.app-footer {
    flex-shrink: 0;
    background: var(--c-primary-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 1.1rem 0;
    font-size: .85rem;
}

.app-footer a {
    color: var(--c-accent);
}

/* ============================================================
   7. UTILIDADES
   ============================================================ */
.rol-badge {
    background: rgba(224, 164, 88, 0.18);
    color: var(--c-accent-dark);
    font-weight: 600;
    font-size: .78rem;
    padding: .2rem .6rem;
    border-radius: 999px;
}

/* ============================================================
   8. LAYOUT CON SIDEBAR (dashboard)
   ============================================================
   Añadido 2026-06-01: estructura sidebar lateral + área de trabajo.
   Actualizado 2026-06-01: bloques plegables y mejoras móviles.
*/
.app-shell {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.app-sidebar {
    width: 270px;
    flex-shrink: 0;
    background: linear-gradient(180deg, var(--c-primary-dark), var(--c-primary));
    color: #fff;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.app-sidebar .sidebar-brand {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.2rem;
    padding: 1.3rem 1.25rem;
    display: flex;
    align-items: center;
    gap: .5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    position: sticky; top: 0;
    background: var(--c-primary-dark);
    z-index: 2;
}

.app-sidebar .sidebar-brand .brand-badge {
    background: var(--c-accent);
    color: var(--c-primary-dark);
    font-family: var(--font-body);
    font-size: .65rem; font-weight: 700;
    padding: .12rem .45rem; border-radius: 999px;
}

.app-sidebar .sidebar-nav { padding: .5rem 0; flex: 1; }

/* --- Bloques plegables (acordeón) --- */
.sidebar-group-toggle {
    width: 100%;
    background: none; border: none;
    color: rgba(255, 255, 255, 0.55);
    font-size: .72rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: .07em;
    padding: .85rem 1.25rem .5rem;
    display: flex; align-items: center; justify-content: space-between;
    cursor: pointer;
    transition: color var(--transition);
}
.sidebar-group-toggle:hover { color: #fff; }
.sidebar-group-toggle .chevron {
    font-size: .8rem;
    transition: transform var(--transition);
}
.sidebar-group.open .sidebar-group-toggle .chevron { transform: rotate(180deg); }

/* Contenido plegable: animación por max-height */
.sidebar-group-items {
    max-height: 0;
    overflow: hidden;
    transition: max-height 280ms ease;
}
.sidebar-group.open .sidebar-group-items {
    max-height: 600px; /* suficiente para los enlaces del bloque */
}

.app-sidebar .sidebar-link {
    display: flex; align-items: center; gap: .7rem;
    padding: .6rem 1.25rem;
    color: rgba(255, 255, 255, 0.82);
    font-weight: 500;
    border-left: 3px solid transparent;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.app-sidebar .sidebar-link:hover,
.app-sidebar .sidebar-link.active {
    background: rgba(255, 255, 255, 0.10);
    border-left-color: var(--c-accent);
    color: #fff;
}
.app-sidebar .sidebar-link i { width: 1.2rem; text-align: center; flex-shrink: 0; }

.app-sidebar .sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: .8rem;
}

/* --- Área de contenido --- */
.app-content { flex: 1; min-width: 0; min-height: 100vh; display: flex; flex-direction: column; }
.app-topbar {
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    padding: .7rem 1.25rem;
    display: flex; align-items: center; justify-content: space-between;
    gap: .5rem;
    box-shadow: var(--shadow-sm);
    position: sticky; top: 0; z-index: 1030;
    flex-wrap: wrap;
}
.app-topbar .topbar-title {
    font-family: var(--font-display);
    font-weight: 600; color: var(--c-primary);
    margin: 0; font-size: 1.2rem;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.app-content-body { padding: 1.1rem 1.25rem; }
.app-footer { margin-top: auto; }

/* --- Toggle móvil --- */
.sidebar-toggle {
    background: none; border: none;
    font-size: 1.5rem; color: var(--c-primary);
    display: none; line-height: 1; padding: .1rem .3rem;
}

/* ============================================================
   9. TARJETAS DE KPI (métricas)
   ============================================================ */
.kpi-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1.1rem 1.2rem; height: 100%;
    display: flex; align-items: center; gap: 1rem;
    transition: transform var(--transition), box-shadow var(--transition);
    animation: cardIn 440ms cubic-bezier(0.4,0,0.2,1) both;
}
.kpi-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.kpi-icon {
    width: 50px; height: 50px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; color: #fff; flex-shrink: 0;
}
.kpi-icon.bg-academic { background: var(--c-info); }
.kpi-icon.bg-students { background: var(--c-success); }
.kpi-icon.bg-incident { background: var(--c-danger); }
.kpi-icon.bg-progress { background: var(--c-accent-dark); }
.kpi-value {
    font-family: var(--font-display);
    font-size: 1.8rem; font-weight: 600; line-height: 1; color: var(--c-primary);
}
.kpi-label { color: var(--c-text-muted); font-size: .85rem; }

.panel-box {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1.3rem;
}
.panel-box h5 { font-family: var(--font-display); color: var(--c-primary); margin-bottom: 1rem; }
.progress { height: 1.4rem; border-radius: 999px; background: var(--c-bg); }
.progress-bar { background: var(--c-accent-dark); font-weight: 600; }
.tut-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: .6rem 0; border-bottom: 1px solid var(--c-border); gap: .5rem;
}
.tut-item:last-child { border-bottom: none; }
.tut-date { font-weight: 600; color: var(--c-primary); font-size: .85rem; }

/* ============================================================
   10. RESPONSIVE / MÓVIL
   ============================================================ */

/* Tablas con scroll horizontal en pantallas pequeñas */
.table-responsive { -webkit-overflow-scrolling: touch; }

@media (max-width: 991px) {
    /* Sidebar deslizante */
    .app-sidebar {
        position: fixed; z-index: 1050;
        left: -290px; width: 270px; height: 100vh;
        transition: left var(--transition);
        box-shadow: var(--shadow-lg);
    }
    .app-sidebar.open { left: 0; }

    .sidebar-backdrop {
        display: none; position: fixed; inset: 0;
        background: rgba(0,0,0,.45); z-index: 1040;
    }
    .sidebar-backdrop.show { display: block; }

    .sidebar-toggle { display: inline-flex; align-items: center; }

    .app-content-body { padding: 1.1rem .9rem; }
    .app-topbar { padding: .6rem .9rem; }
}

@media (max-width: 575px) {
    /* Compactar KPIs y textos en teléfono */
    .kpi-card { padding: .9rem 1rem; gap: .75rem; }
    .kpi-icon { width: 42px; height: 42px; font-size: 1.2rem; border-radius: 12px; }
    .kpi-value { font-size: 1.5rem; }
    .kpi-label { font-size: .8rem; }

    .topbar-title { font-size: 1.05rem; max-width: 45vw; }

    /* Botones de la topbar más compactos */
    .app-topbar .btn { padding: .3rem .55rem; font-size: .85rem; }

    /* Tarjetas de sección a ancho completo con menos margen */
    .section-card .card-header { font-size: 1rem; padding: .85rem 1rem; }
    .section-card .list-group-item { padding: .65rem 1rem; }

    /* Login adaptado */
    .login-card { padding: 1.75rem 1.4rem; }
}

/* Evitar scroll horizontal accidental en toda la app */
html, body { overflow-x: hidden; }

/* ============================================================
   11. AJUSTE LAYOUT CRUD (form arriba / lista abajo)
   ============================================================
   Añadido 2026-06-01: al apilar el formulario sobre la lista, se limita el
   ancho del formulario para que no quede excesivamente estirado en pantallas
   anchas. El formulario es el primer panel-box dentro de su columna.
*/
.col-12.mb-4 > .panel-box {
    max-width: 720px;
}

/* Los campos del formulario CRUD pueden disponerse en rejilla fluida */
.crud-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: .75rem 1rem;
    align-items: end;
}

/* ============================================================
   12. CALENDARIO DE SESIONES (Fase 4)
   ============================================================ */
.cal-table { width: 100%; table-layout: fixed; border-collapse: separate; border-spacing: 6px; }
.cal-table th {
    text-align: center; font-size: .8rem; color: var(--c-text-muted);
    text-transform: uppercase; letter-spacing: .05em; padding: .35rem 0; font-weight: 600;
}
.cal-cell {
    height: 78px; border-radius: var(--radius-sm); border: 1px solid var(--c-border);
    background: var(--c-surface); padding: .35rem .45rem; vertical-align: top;
    position: relative; transition: transform var(--transition), box-shadow var(--transition);
}
.cal-cell .cal-num { font-weight: 600; font-size: .9rem; }
.cal-cell.empty { background: transparent; border: none; }
.cal-cell.lectivo { border-color: var(--c-info); background: rgba(58,124,165,.07); cursor: pointer; }
.cal-cell.lectivo:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.cal-cell.festivo { background: rgba(192,71,63,.10); border-color: var(--c-danger); }
.cal-cell.festivo .cal-num { color: var(--c-danger); }
.cal-cell.con-sesion { background: rgba(47,143,91,.12); border-color: var(--c-success); cursor: pointer; }
.cal-cell.con-sesion:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.cal-tag {
    display: block; margin-top: .2rem; font-size: .68rem; line-height: 1.15;
    color: var(--c-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.cal-cell.con-sesion .cal-badge {
    position: absolute; top: .3rem; right: .35rem; font-size: .6rem;
    background: var(--c-success); color: #fff; border-radius: 999px; padding: .05rem .4rem;
}
.cal-legend { display: flex; gap: 1.2rem; flex-wrap: wrap; font-size: .82rem; color: var(--c-text-muted); }
.cal-legend .dot { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: .35rem; vertical-align: middle; }
.cal-legend .dot-lectivo { background: rgba(58,124,165,.4); border: 1px solid var(--c-info); }
.cal-legend .dot-festivo { background: rgba(192,71,63,.4); border: 1px solid var(--c-danger); }
.cal-legend .dot-sesion  { background: rgba(47,143,91,.5); border: 1px solid var(--c-success); }

@media (max-width: 575px) {
    .cal-cell { height: 56px; padding: .2rem .25rem; }
    .cal-cell .cal-num { font-size: .78rem; }
    .cal-tag { display: none; }
    .cal-table { border-spacing: 3px; }
}

/* ============================================================
   13. TABLAS CON SCROLL INTERNO (listas largas)
   ============================================================
   Añadido 2026-06-01: las tablas dentro de .tabla-scroll tienen altura máxima
   y scroll vertical propio, con cabecera fija. Así la lista cabe en pantalla y
   se desplaza dentro de su contenedor sin alargar la página.
*/
.tabla-scroll {
    /* Altura calculada: viewport menos topbar, barra rápida, cabecera de la
       sección, padding y footer, para que el conjunto quepa en una pantalla
       al 100% de zoom incluso con barra de marcadores. Mínimo 200px. */
    max-height: clamp(200px, calc(100vh - 380px), 65vh);
    overflow-y: auto;
    overflow-x: auto;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
}
.tabla-scroll table {
    margin-bottom: 0;
}
/* Cabecera fija al hacer scroll */
.tabla-scroll thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--c-surface);
    box-shadow: inset 0 -1px 0 var(--c-border);
}
/* En pantallas bajas, dar algo más de aire */
@media (max-height: 720px) {
    .tabla-scroll { max-height: clamp(180px, calc(100vh - 320px), 60vh); }
}

/* ============================================================
   14. COMPORTAMIENTO (Fase 7)
   ============================================================ */
.punto-pos { color: var(--c-success); font-weight: 700; }
.punto-neg { color: var(--c-danger); font-weight: 700; }
.balance-badge {
    font-weight: 700; font-size: .9rem; padding: .2rem .6rem; border-radius: 999px;
}
.balance-pos { background: rgba(47,143,91,.15); color: var(--c-success); }
.balance-neg { background: rgba(192,71,63,.15); color: var(--c-danger); }
.balance-cero { background: var(--c-bg); color: var(--c-text-muted); }
.btn-punto-pos { background: var(--c-success); border: none; color: #fff; }
.btn-punto-pos:hover { background: #267a4d; color: #fff; }
.btn-punto-neg { background: var(--c-danger); border: none; color: #fff; }
.btn-punto-neg:hover { background: #a83c35; color: #fff; }

/* ============================================================
   15. BARRA DE ACCESOS RÁPIDOS (topbar secundaria)
   ============================================================
   Añadido 2026-06-01: fila horizontal con los botones más usados, bajo la
   topbar. Scroll horizontal en móvil. El acceso activo se resalta.
*/
.quick-bar {
    display: flex;
    gap: .35rem;
    padding: .5rem 1.25rem;
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
}
.quick-bar::-webkit-scrollbar { height: 4px; }
.quick-link {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .4rem .8rem;
    border-radius: 999px;
    color: var(--c-text-muted);
    font-weight: 500;
    font-size: .88rem;
    border: 1px solid transparent;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
    flex-shrink: 0;
}
.quick-link:hover {
    background: var(--c-bg);
    color: var(--c-primary);
}
.quick-link.active {
    background: var(--c-primary);
    color: #fff;
    border-color: var(--c-primary);
}
.quick-link i { font-size: 1rem; }

@media (max-width: 575px) {
    .quick-bar { padding: .4rem .6rem; }
    .quick-link { padding: .35rem .6rem; font-size: .82rem; }
    .quick-link span { display: none; }   /* en móvil solo iconos */
    .quick-link i { font-size: 1.15rem; }
}