/* ============================================================
   portal_alumno.css – Portal del Alumno
   Comercio N°1 "Enrique F. Clara" – La Rioja
   Mismo sistema de diseño que home.css
   Paleta: Azul institutional profundo + Dorado + Blanco
   ============================================================ */

/* ── VARIABLES ─────────────────────────────────────────────── */
:root {
  --azul:          #0a2540;
  --azul-oscuro:   #0f2244;
  --azul-claro:    #2e5ba8;
  --azul-suave:    #e8eefc;
  --dorado:        #c8972a;
  --dorado-claro:  #f0c96b;
  --blanco:        #ffffff;
  --gris-10:       #f7f8fa;
  --gris-20:       #eef0f4;
  --gris-40:       #c9cdd8;
  --gris-60:       #8892a4;
  --gris-80:       #3c4455;
  --negro:         #111827;
  --verde:         #1d8a5a;
  --rojo:          #c0392b;
  --naranja:       #d4611a;

  --font-display:  'Playfair Display', Georgia, serif;
  --font-body:     'DM Sans', system-ui, sans-serif;

  --nav-h:         68px;
  --radius-sm:     6px;
  --radius-md:     10px;
  --radius-lg:     16px;

  --shadow-sm:     0 1px 4px rgba(26,58,110,.08);
  --shadow-md:     0 4px 16px rgba(26,58,110,.12);
  --shadow-lg:     0 8px 32px rgba(26,58,110,.18);

  --transition:    .25s ease;
}

/* ── RESET MÍNIMO ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--gris-10);
  color: var(--negro);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; color: var(--azul-oscuro); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }

/* ================================================================
   NAVBAR
   ================================================================ */
#portal-nav {
  position: sticky;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--azul-oscuro);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  box-shadow: var(--shadow-md);
}
.nav-inner {
  max-width: 1320px;
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: .75rem;
}
.nav-logo img {
  height: 44px; width: 44px;
  object-fit: contain;
  border-radius: 50%;
}
.nav-logo-placeholder {
  height: 44px; width: 44px;
  border-radius: 50%;
  background: var(--dorado);
  display: flex; align-items: center; justify-content: center;
  color: var(--azul-oscuro);
  font-size: 1.5rem;
  font-family: var(--font-display);
  font-weight: 700;
}
.nav-nombre {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--blanco);
  line-height: 1.15;
}
.nav-nombre small {
  display: block;
  font-family: var(--font-body);
  font-size: .72rem;
  font-weight: 500;
  color: var(--dorado-claro);
  letter-spacing: .05em;
}
.btn-nav-volver {
  display: inline-flex; align-items: center; gap: .4rem;
  color: rgba(255,255,255,.8);
  font-size: .85rem;
  padding: .5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid rgba(255,255,255,.2);
  transition: all var(--transition);
}
.btn-nav-volver:hover { color: var(--blanco); border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.08); }

/* ================================================================
   HERO & SELECTOR
   ================================================================ */
#portal-hero {
  position: relative;
  background: linear-gradient(135deg, var(--azul-oscuro) 0%, var(--azul-claro) 100%);
  padding: 3.5rem 1.5rem 3rem;
  text-align: center;
  overflow: hidden;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(200,151,42,.15), transparent 55%),
              radial-gradient(circle at 80% 80%, rgba(255,255,255,.06), transparent 50%);
}
.hero-content { position: relative; z-index: 1; max-width: 620px; margin: 0 auto; }
.hero-icon {
  width: 68px; height: 68px;
  margin: 0 auto 1rem;
  background: rgba(255,255,255,.12);
  border: 1.5px solid rgba(255,255,255,.25);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--dorado-claro);
  font-size: 2rem;
}
#portal-hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  color: var(--blanco);
  margin-bottom: .6rem;
  text-shadow: 0 2px 12px rgba(0,0,0,.25);
}
#portal-hero p {
  color: rgba(255,255,255,.85);
  font-size: 1rem;
  line-height: 1.65;
}

.select-anio-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-width: 170px;
}
.select-anio-wrapper .select-icon {
  position: absolute;
  left: 12px;
  color: #3b82f6;
  font-size: 0.9rem;
  pointer-events: none;
  z-index: 2;
}
.select-anio-wrapper .select-arrow {
  position: absolute;
  right: 12px;
  color: #94a3b8;
  font-size: 0.75rem;
  pointer-events: none;
  z-index: 2;
  transition: transform 0.2s ease;
}
.select-anio-wrapper:focus-within .select-arrow {
  transform: rotate(180deg);
  color: #3b82f6;
}
.select-anio-custom {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  width: 100%;
  background-color: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  padding: 0.55rem 2.2rem 0.55rem 2.3rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #1e293b;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  outline: none;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
.select-anio-custom:hover { background-color: #ffffff; border-color: #94a3b8; }
.select-anio-custom:focus { background-color: #ffffff; border-color: #3b82f6; box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18); }
.select-anio-custom option { font-weight: 500; color: #334155; padding: 8px; background-color: #ffffff; }

/* ================================================================
   ESTRUCTURA DE TRIMESTRES Y MATERIAS (CALIFICACIONES EN RESUMEN)
   ================================================================ */
.trimestre-block {
  background: var(--blanco);
  border: 1px solid var(--gris-20);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.trimestre-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--azul-oscuro);
  border-bottom: 2px solid var(--azul-suave);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.trimestre-title i { color: var(--azul-claro); }

.materias-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.materia-card {
  background: var(--gris-10);
  border: 1px solid var(--gris-20);
  border-radius: var(--radius-sm);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.75rem;
  transition: box-shadow var(--transition);
}
.materia-card:hover {
  box-shadow: var(--shadow-sm);
  background: var(--blanco);
}
.materia-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}
.materia-card-header h4 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--azul-oscuro);
}
.badge-promedio {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  font-weight: 700;
  white-space: nowrap;
}
.badge-promedio.nota-alta { background: #d1f0e0; color: #146b3b; }
.badge-promedio.nota-baja { background: #fde0dd; color: #9c2418; }

.materia-notas-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}
.nota-item {
  background: var(--blanco);
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gris-20);
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nota-label { color: var(--gris-60); font-weight: 500; }
.txt-aprobado { color: var(--verde); font-weight: 700; }
.txt-desaprobado { color: var(--rojo); font-weight: 700; }

/* ================================================================
   BUSCADOR DNI
   ================================================================ */
#portal-buscar {
  display: flex;
  justify-content: center;
  padding: 0 1.5rem;
  margin-top: -2.25rem;
  margin-bottom: 3rem;
  position: relative;
  z-index: 2;
}
.buscar-card {
  background: var(--blanco);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
  width: 100%;
  max-width: 460px;
  text-align: center;
}
.buscar-header i { font-size: 2rem; color: var(--azul); margin-bottom: .5rem; display: block; }
.buscar-header h2 { font-size: 1.3rem; margin-bottom: .25rem; }
.buscar-header p { font-size: .85rem; color: var(--gris-60); margin-bottom: 1.5rem; }

.buscar-input-wrap {
  display: flex;
  align-items: center;
  gap: .5rem;
  background: var(--gris-10);
  border: 1.5px solid var(--gris-40);
  border-radius: var(--radius-md);
  padding: .3rem .3rem .3rem 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.buscar-input-wrap:focus-within {
  border-color: var(--azul-claro);
  box-shadow: 0 0 0 3px rgba(46,91,168,.12);
}
.buscar-icon { color: var(--gris-60); font-size: 1rem; }
#dni-input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 1.05rem;
  letter-spacing: .04em;
  padding: .65rem 0;
  color: var(--negro);
}
#dni-input::placeholder { color: var(--gris-40); }
#btn-buscar {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--azul);
  color: var(--blanco);
  font-size: 1.05rem;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition);
}
#btn-buscar:hover { background: var(--azul-claro); }
#btn-buscar:disabled { opacity: .6; cursor: default; }

.buscar-error {
  margin-top: .85rem;
  background: #fde0dd;
  color: #9c2418;
  font-size: .85rem;
  padding: .6rem .85rem;
  border-radius: var(--radius-sm);
  text-align: left;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.buscar-nota {
  margin-top: 1.25rem;
  font-size: .78rem;
  color: var(--gris-60);
  display: flex; align-items: center; justify-content: center; gap: .35rem;
}
.buscar-nota i { color: var(--dorado); }

/* ================================================================
   PANEL PRINCIPAL / PERFIL
   ================================================================ */
#portal-main { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem 4rem; }

#perfil-alumno {
  background: var(--blanco);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}
.perfil-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.perfil-avatar-wrap { position: relative; flex-shrink: 0; }
.perfil-avatar {
  width: 84px; height: 84px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--azul-suave);
}
.perfil-estado-badge {
  position: absolute;
  bottom: -2px; right: -2px;
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 3px solid var(--blanco);
  background: var(--verde);
}
.perfil-estado-badge.inactivo { background: var(--rojo); }

.perfil-datos { flex: 1; min-width: 220px; }
.perfil-nombre-wrap {
  display: flex; align-items: center; gap: .65rem; flex-wrap: wrap;
  margin-bottom: .4rem;
}
.perfil-nombre-wrap h2 { font-size: 1.35rem; }
.perfil-dni-badge {
  background: var(--azul-suave);
  color: var(--azul);
  font-size: .72rem;
  font-weight: 600;
  padding: .2rem .6rem;
  border-radius: 100px;
}
.perfil-meta {
  display: flex; flex-wrap: wrap; gap: .5rem 1.25rem;
  font-size: .85rem;
  color: var(--gris-60);
  margin-bottom: .6rem;
}
.perfil-meta i { color: var(--azul-claro); margin-right: .3rem; }
.perfil-tags { display: flex; flex-wrap: wrap; gap: .4rem; }
.perfil-tags span {
  font-size: .7rem; font-weight: 600; text-transform: uppercase;
  padding: .18rem .6rem; border-radius: 100px;
  letter-spacing: .04em;
  background: var(--gris-20); color: var(--gris-80);
}
.perfil-tags .tag-regular { background: #d1f0e0; color: #146b3b; }
.perfil-tags .tag-riesgo  { background: #fde0dd; color: #9c2418; }
.perfil-tags .tag-libre   { background: #fde8d5; color: #b04d10; }

.btn-salir {
  flex-shrink: 0;
  display: inline-flex; align-items: center; gap: .4rem;
  background: transparent;
  border: 1.5px solid var(--gris-40);
  color: var(--gris-80);
  padding: .55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  transition: all var(--transition);
}
.btn-salir:hover { border-color: var(--rojo); color: var(--rojo); }

/* ── TABS ───────────────────────────────────────────────────── */
#portal-tabs-wrap {
  position: sticky;
  top: var(--nav-h);
  z-index: 50;
  background: var(--gris-10);
  padding-bottom: .25rem;
  margin-bottom: 1.5rem;
}
.portal-tabs {
  display: flex;
  gap: .4rem;
  overflow-x: auto;
  background: var(--blanco);
  border-radius: var(--radius-md);
  padding: .4rem;
  box-shadow: var(--shadow-sm);
  scrollbar-width: none;
}
.portal-tabs::-webkit-scrollbar { display: none; }
.ptab {
  flex-shrink: 0;
  display: inline-flex; align-items: center; gap: .45rem;
  background: transparent;
  border: none;
  color: var(--gris-60);
  font-size: .85rem;
  font-weight: 500;
  padding: .6rem 1.1rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.ptab:hover { background: var(--gris-10); color: var(--azul); }
.ptab.active { background: var(--azul); color: var(--blanco); font-weight: 600; }

.ptab-panel { display: none; }
.ptab-panel.active { display: block; animation: fadeInPanel .3s ease; }
@keyframes fadeInPanel {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* ── SECTION COMMONS ────────────────────────────────────────── */
.portal-section {
  background: var(--blanco);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}
.portal-section-title {
  display: flex; align-items: center; gap: .55rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--azul);
  font-weight: 700;
  margin-bottom: 1.25rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--gris-20);
}
.portal-section-title i { color: var(--dorado); }

.loading-state, .empty-state {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--gris-60);
  font-size: .9rem;
}
.loading-state i { margin-right: .4rem; color: var(--azul-claro); }
.empty-state i { font-size: 1.9rem; display: block; margin-bottom: .6rem; color: var(--gris-40); }

/* ================================================================
   TAB RESUMEN
   ================================================================ */
.resumen-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--blanco);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: .9rem;
  transition: transform var(--transition), box-shadow var(--transition);
  border-left: 4px solid var(--azul);
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-card-icon {
  width: 46px; height: 46px; flex-shrink: 0;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  background: var(--azul-suave);
  color: var(--azul);
}
.stat-card-num {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--azul-oscuro);
  line-height: 1.1;
}
.stat-card-lbl { font-size: .78rem; color: var(--gris-60); }

.stat-card-az { border-left-color: var(--azul); }
.stat-card-az .stat-card-icon { background: var(--azul-suave); color: var(--azul); }
.stat-card-vd { border-left-color: var(--verde); }
.stat-card-vd .stat-card-icon { background: #d1f0e0; color: #146b3b; }
.stat-card-or { border-left-color: var(--dorado); }
.stat-card-or .stat-card-icon { background: #fdf1dc; color: var(--dorado); }
.stat-card-rj { border-left-color: var(--rojo); }
.stat-card-rj .stat-card-icon { background: #fde0dd; color: var(--rojo); }

#resumen-alertas .alerta-item {
  display: flex; align-items: flex-start; gap: .65rem;
  background: #fde8d5;
  color: #b04d10;
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  font-size: .85rem;
  margin-bottom: .6rem;
}
#resumen-alertas .alerta-item i { margin-top: .1rem; }
#resumen-alertas .alerta-item.critica { background: #fde0dd; color: #9c2418; }

/* ================================================================
   TAB CALIFICACIONES
   ================================================================ */
.materia-notas-card {
  border: 1px solid var(--gris-20);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
}
.materia-notas-header {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--gris-10);
  padding: .85rem 1.1rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.materia-notas-header h4 { font-size: .95rem; color: var(--azul); }
.materia-notas-header .docente { font-size: .78rem; color: var(--gris-60); }
.materia-promedio {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  padding: .15rem .7rem;
  border-radius: 100px;
  color: var(--blanco);
}
.materia-promedio.alta  { background: var(--verde); }
.materia-promedio.media { background: var(--dorado); }
.materia-promedio.baja  { background: var(--rojo); }

.notas-tabla { width: 100%; border-collapse: collapse; }
.notas-tabla th {
  text-align: left;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--gris-60);
  padding: .6rem 1.1rem;
  border-bottom: 1px solid var(--gris-20);
}
.notas-tabla td {
  padding: .65rem 1.1rem;
  font-size: .87rem;
  color: var(--gris-80);
  border-bottom: 1px solid var(--gris-20);
}
.notas-tabla tr:last-child td { border-bottom: none; }

/* ================================================================
   TAB ASISTENCIA
   ================================================================ */
.asistencia-leyenda {
  display: flex; flex-wrap: wrap; gap: .75rem 1.25rem;
  margin-bottom: 1.5rem;
}
.asis-badge { display: inline-flex; align-items: center; gap: .4rem; font-size: .8rem; color: var(--gris-80); }
.asis-badge i { font-size: .55rem; }
.asis-presente i { color: var(--verde); }
.asis-tarde i    { color: var(--dorado); }
.asis-ausente i  { color: var(--rojo); }
.asis-permiso i  { color: var(--azul-claro); }

.asistencia-resumen-mini {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: .85rem;
  margin-bottom: 1.5rem;
}
.asis-mini-card { background: var(--gris-10); border-radius: var(--radius-md); padding: 1rem; text-align: center; }
.asis-mini-num { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--azul); }
.asis-mini-lbl { font-size: .78rem; color: var(--gris-60); margin-top: .2rem; }

.asistencia-tabla { width: 100%; border-collapse: collapse; }
.asistencia-tabla th {
  text-align: left;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--gris-60);
  padding: .6rem .5rem;
  border-bottom: 1px solid var(--gris-20);
}
.asistencia-tabla td {
  padding: .6rem .5rem;
  font-size: .86rem;
  color: var(--gris-80);
  border-bottom: 1px solid var(--gris-20);
}
.estado-pill {
  display: inline-flex; align-items: center; gap: .35rem;
  font-size: .78rem; font-weight: 600;
  padding: .2rem .65rem;
  border-radius: 100px;
}
.estado-presente { background: #d1f0e0; color: #146b3b; }
.estado-tarde    { background: #fdf1dc; color: var(--dorado); }
.estado-ausente  { background: #fde0dd; color: #9c2418; }
.estado-permiso  { background: var(--azul-suave); color: var(--azul); }

/* ================================================================
   TAB MATERIAS (RENOMBRADO PARA EVITAR CONFLICTOS CON TRIMESTRES)
   ================================================================ */
.materias-catalogo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.materia-catalogo-card {
  border: 1px solid var(--gris-20);
  border-radius: var(--radius-md);
  padding: 1.1rem;
  display: flex;
  gap: .9rem;
  align-items: flex-start;
  transition: box-shadow var(--transition), transform var(--transition);
}
.materia-catalogo-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.materia-icon {
  width: 42px; height: 42px; flex-shrink: 0;
  background: var(--azul-suave);
  color: var(--azul);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.materia-catalogo-card h4 { font-size: .92rem; margin-bottom: .2rem; }
.materia-catalogo-card .docente { font-size: .8rem; color: var(--gris-60); margin-bottom: .3rem; }
.materia-catalogo-card .materia-carga { font-size: .75rem; color: var(--gris-60); }
.materia-catalogo-card .materia-carga i { color: var(--dorado); margin-right: .25rem; }

/* ================================================================
   TAB MIS DATOS
   ================================================================ */
.datos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.dato-item {
  background: var(--gris-10);
  border-radius: var(--radius-md);
  padding: .9rem 1.1rem;
}
.dato-item .dato-lbl {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--gris-60);
  margin-bottom: .3rem;
  display: flex; align-items: center; gap: .35rem;
}
.dato-item .dato-lbl i { color: var(--azul-claro); }
.dato-item .dato-val { font-size: .95rem; color: var(--negro); font-weight: 500; }

/* ================================================================
   FOOTER
   ================================================================ */
#portal-footer {
  background: var(--azul-oscuro);
  color: rgba(255,255,255,.7);
  padding: 2rem 1.5rem;
}
.footer-inner {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: .85rem;
}
#portal-footer strong { color: var(--blanco); font-family: var(--font-display); }
#portal-footer small { opacity: .8; }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 900px) {
  .resumen-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  .nav-nombre small { display: none; }
  .btn-nav-volver span { display: none; }
  #portal-hero { padding: 2.5rem 1.25rem 2.25rem; }
  #portal-buscar { margin-top: -1.75rem; }
  .buscar-card { padding: 1.5rem; }
  .perfil-inner { flex-direction: column; align-items: flex-start; }
  .btn-salir { align-self: stretch; justify-content: center; }
  .resumen-grid { grid-template-columns: 1fr 1fr; gap: .75rem; }
  .portal-section { padding: 1.25rem; }
  .footer-inner { flex-direction: column; text-align: left; }
  .footer-inner > div:last-child { text-align: left !important; }
}

@media (max-width: 480px) {
  .resumen-grid { grid-template-columns: 1fr; }
  .materias-grid { grid-template-columns: 1fr; }
  .materia-notas-list { grid-template-columns: 1fr; }
  .materia-notas-header { flex-direction: column; align-items: flex-start; }
  .notas-tabla, .asistencia-tabla { display: block; overflow-x: auto; white-space: nowrap; }
}