/* ============================================================
   style.css — Sistema de Registro Tecnológico UC
   Universidad Continental
   ============================================================ */

/* ── Variables CSS ─────────────────────────────────────────── */
:root {
  --morado:       #6802c1;  /* UC oficial */
  --morado-mid:   #7c1fd4;
  --morado-light: #9b45e8;
  --gold:         #f5a623;  /* ámbar — contraste con morado */
  --gold-light:   #ffbe4d;
  --bg:           #f6f4fb;  /* fondo ligeramente violáceo */
  --surface:     #ffffff;
  --success:     #16a34a;
  --warning:     #ca8a04;
  --danger:      #dc2626;
  --info:        #0284c7;
  --text:        #1e293b;
  --text-muted:  #64748b;
  --gray:        #64748b;
  --border:      #e2e8f0;
  --sidebar-w:   252px;
  --radius:      8px;
  --shadow:      0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:   0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg:   0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);
  --transition:  0.2s ease;
}

/* ── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--morado-light); text-decoration: none; }
a:hover { text-decoration: underline; }

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

h1, h2, h3, h4 { font-weight: 600; line-height: 1.3; color: inherit; }

/* ── Layout: Sidebar + Contenido ───────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: linear-gradient(180deg, #320085 0%, #4e009e 40%, #5c00b8 100%);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform var(--transition);
  box-shadow: 4px 0 24px rgba(0,0,0,.25);
}

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

.main-content {
  flex: 1;
  padding: 28px 32px;
  max-width: 1400px;
  width: 100%;
}

/* ── Sidebar: Marca ────────────────────────────────────────── */
.sidebar-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
  padding: 22px 18px 16px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(0,0,0,.15);
}

.sidebar-brand-logo {
  width: 152px;
  height: auto;
  display: block;
  filter: brightness(0) invert(1);
  opacity: .9;
}

.brand-sistema {
  font-size: 10px;
  font-weight: 600;
  color: rgba(255,255,255,.38);
  letter-spacing: .6px;
  text-transform: uppercase;
  padding-left: 1px;
  margin-top: 1px;
}

/* ── Sidebar: Usuario ──────────────────────────────────────── */
.sidebar-user {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 13px 18px;
  border-bottom: 1px solid rgba(255,255,255,.07);
  background: rgba(0,0,0,.18);
  position: relative;
}

/* Línea de color izquierda según rol */
.sidebar-user::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--rol-color, rgba(255,255,255,.3));
  border-radius: 0 3px 3px 0;
}

.user-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #7c3aed, #9b45e8);
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  border: 2px solid var(--rol-color, rgba(255,255,255,.25));
  box-shadow: 0 2px 8px rgba(0,0,0,.3);
  letter-spacing: .5px;
}

.user-info {
  overflow: hidden;
  min-width: 0;
  flex: 1;
}

.user-nombre {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
  line-height: 1.2;
}

.user-rol-badge {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 99px;
  letter-spacing: .4px;
  text-transform: uppercase;
  white-space: nowrap;
}

/* ── Sidebar: Nav ──────────────────────────────────────────── */
.sidebar-nav {
  flex: 1;
  padding: 10px 10px 6px;
  display: flex;
  flex-direction: column;
  gap: 1px;
  overflow-y: auto;
}

.nav-section-label {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: rgba(255,255,255,.32);
  padding: 12px 10px 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  color: rgba(255,255,255,.68);
  font-size: 13.5px;
  font-weight: 500;
  transition: background .15s, color .15s;
  text-decoration: none;
  position: relative;
}

.nav-link svg {
  width: 17px; height: 17px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
  opacity: .8;
  transition: opacity .15s;
}

.nav-link:hover {
  background: rgba(255,255,255,.09);
  color: rgba(255,255,255,.95);
  text-decoration: none;
}
.nav-link:hover svg { opacity: 1; }

/* Activo: fondo dorado tenue + borde izquierdo */
.nav-link.active {
  background: rgba(245,166,35,.14);
  color: var(--gold-light);
  font-weight: 700;
  text-decoration: none;
}
.nav-link.active svg { opacity: 1; }
.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0; top: 6px; bottom: 6px;
  width: 3px;
  background: var(--gold);
  border-radius: 0 3px 3px 0;
}

.nav-separator {
  height: 1px;
  background: rgba(255,255,255,.07);
  margin: 6px 0;
}

.nav-link-logout {
  color: rgba(252,165,165,.7);
}
.nav-link-logout:hover {
  background: rgba(220,38,38,.14);
  color: #fca5a5;
}

/* ── Sidebar: Footer ───────────────────────────────────────── */
.sidebar-footer {
  padding: 12px 18px;
  border-top: 1px solid rgba(255,255,255,.07);
  background: rgba(0,0,0,.15);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.badge-semestre {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--gold);
  font-weight: 600;
  background: rgba(245,166,35,.12);
  border: 1px solid rgba(245,166,35,.2);
  padding: 4px 10px;
  border-radius: 99px;
}

.sidebar-footer-version {
  font-size: 10px;
  color: rgba(255,255,255,.22);
  font-weight: 500;
  letter-spacing: .3px;
}

/* ── Hamburguesa (móvil) ───────────────────────────────────── */
.hamburger-btn {
  display: none;
  position: fixed;
  top: 12px; left: 12px;
  z-index: 200;
  background: linear-gradient(135deg, #4e009e, #6802c1);
  border: none;
  border-radius: 8px;
  padding: 9px;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  box-shadow: 0 3px 12px rgba(104,2,193,.4);
}

.hamburger-btn span {
  display: block;
  width: 20px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(2px);
  z-index: 99;
}

/* ── Flash messages ────────────────────────────────────────── */
#flash-container {
  position: fixed;
  top: 16px; right: 16px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 360px;
}

.flash-msg {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid;
  animation: slideIn .25s ease;
  font-size: 14px;
}

.flash-msg.success { border-color: var(--success); }
.flash-msg.error   { border-color: var(--danger); }
.flash-msg.warning { border-color: var(--warning); }
.flash-msg.info    { border-color: var(--info); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* ── Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 20px 24px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--morado);
}

/* ── Cards métricas ─────────────────────────────────────────── */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  box-shadow: var(--shadow);
}

.metric-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.metric-icon svg {
  width: 22px; height: 22px;
  stroke: #fff;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.metric-icon.azul     { background: var(--morado); }
.metric-icon.gold     { background: var(--gold); }
.metric-icon.success  { background: var(--success); }
.metric-icon.danger   { background: var(--danger); }
.metric-icon.info     { background: var(--info); }

.metric-valor {
  font-size: 28px;
  font-weight: 800;
  color: var(--morado);
  line-height: 1;
}

.metric-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead tr { background: var(--morado); }

thead th {
  padding: 12px 14px;
  text-align: left;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: .5px;
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: #f8fafc; }

tbody td {
  padding: 10px 14px;
  vertical-align: middle;
}

/* ── Botones ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background var(--transition), transform .1s, box-shadow var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); text-decoration: none; }
.btn:active { transform: translateY(0); }

.btn svg {
  width: 16px; height: 16px;
  stroke: currentColor; fill: none;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}

.btn-primary   { background: var(--gold);  color: var(--morado); }
.btn-primary:hover { background: var(--gold-light); }

.btn-secondary { background: var(--morado);  color: #fff; }
.btn-secondary:hover { background: var(--morado-mid); }

.btn-success   { background: var(--success); color: #fff; }
.btn-danger    { background: var(--danger);  color: #fff; }
.btn-warning   { background: var(--warning); color: #fff; }
.btn-info      { background: var(--info);    color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--morado-light);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg); }

.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-lg { padding: 12px 24px; font-size: 16px; }

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

/* ── Formularios ────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-label .req { color: var(--danger); margin-left: 2px; }

.form-control {
  width: 100%;
  padding: 9px 12px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--morado-light);
  box-shadow: 0 0 0 3px rgba(155,69,232,.15);
}

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

textarea.form-control { resize: vertical; min-height: 80px; }

.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 4px;
  display: none;
}

.form-control.is-invalid { border-color: var(--danger); }
.form-control.is-invalid + .form-error { display: block; }

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

/* ── Chips / Toggle buttons ─────────────────────────────────── */
.chips-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.chip:hover { border-color: var(--morado-light); color: var(--morado-light); }

.chip.selected {
  background: var(--morado);
  border-color: var(--morado);
  color: #fff;
}

.chip.chip-remove {
  background: var(--morado-light);
  border-color: var(--morado-light);
  color: #fff;
}

.chip .chip-x {
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  opacity: .7;
}

.chip .chip-x:hover { opacity: 1; }

/* Botones toggle (U1 U2 / S1 S2 / Sesión 1 2) */
.toggle-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.toggle-btn {
  padding: 8px 18px;
  border-radius: 6px;
  border: 2px solid var(--border);
  background: var(--surface);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-muted);
}

.toggle-btn:hover { border-color: var(--morado-light); color: var(--morado-light); }

.toggle-btn.active {
  background: var(--morado);
  border-color: var(--morado);
  color: #fff;
}

/* ── Grilla de sesiones ─────────────────────────────────────── */
.sesiones-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 16px;
}

.unidad-block {}

.unidad-header {
  background: var(--morado);
  color: var(--gold);
  padding: 8px 10px;
  border-radius: 8px 8px 0 0;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  letter-spacing: .5px;
}

/* Contenedor interno por unidad */
.semanas-wrap {
  background: var(--bg);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 8px 8px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Agrupador por semana */
.semana-group {}

.semana-titulo {
  font-size: 10px;
  font-weight: 700;
  color: var(--morado);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 4px;
  padding: 2px 6px;
  background: rgba(104, 2, 193, .08);
  border-radius: 4px;
  display: inline-block;
}

/* Fila de sesiones dentro de una semana */
.sesiones-row {
  display: flex;
  gap: 5px;
}

/* Celda individual */
.sesion-cell {
  flex: 1;
  border-radius: 7px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px 4px;
  min-height: 64px;
  transition: transform .15s, box-shadow .15s;
  user-select: none;
}

.sesion-cell:hover { transform: scale(1.04); box-shadow: 0 4px 12px rgba(0,0,0,.15); }

.sesion-cell.enviado {
  background: var(--success);
  color: #fff;
  box-shadow: 0 2px 8px rgba(22, 163, 74, .30);
}
.sesion-cell.borrador {
  background: var(--warning);
  color: #fff;
  box-shadow: 0 2px 8px rgba(202, 138, 4, .25);
}
.sesion-cell.pendiente {
  background: #fff;
  color: var(--text-muted);
  border: 1.5px dashed #cbd5e1;
}
.sesion-cell.pendiente:hover { background: var(--bg); border-color: var(--morado-light); color: var(--morado); }

.cell-icon  { font-size: 20px; line-height: 1; font-weight: 700; }
.cell-label { font-size: 10px; font-weight: 600; margin-top: 3px; opacity: .85; }
.cell-date  { font-size: 9px;  margin-top: 2px; opacity: .75; }

/* ── Semáforo ───────────────────────────────────────────────── */
.estado-dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.estado-verde    { background: var(--success); }
.estado-amarillo { background: var(--warning); }
.estado-rojo     { background: var(--danger); }

.semaforo-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.semaforo-badge.verde    { background: #dcfce7; color: #166534; }
.semaforo-badge.amarillo { background: #fef9c3; color: #854d0e; }
.semaforo-badge.rojo     { background: #fee2e2; color: #991b1b; }

/* ── Barra de progreso ──────────────────────────────────────── */
.progress-wrap {
  background: var(--border);
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  border-radius: 999px;
  background: var(--morado);
  transition: width .6s ease;
}

.progress-bar.gold { background: var(--gold); }
.progress-bar.success { background: var(--success); }

/* ── Modales ────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 500;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active { display: flex; }

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalIn .2s ease;
}

@keyframes modalIn {
  from { transform: scale(.96); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-title { font-size: 17px; font-weight: 700; color: var(--morado); }

.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
}

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

.modal-body    { padding: 20px 24px; }
.modal-footer  { padding: 14px 24px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

/* ── Badges / Estado ────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-success  { background: #dcfce7; color: #166534; }
.badge-warning  { background: #fef9c3; color: #854d0e; }
.badge-danger   { background: #fee2e2; color: #991b1b; }
.badge-info     { background: #dbeafe; color: #1e40af; }
.badge-default  { background: var(--bg); color: var(--text-muted); }

/* ── Spinner ────────────────────────────────────────────────── */
.spinner {
  width: 24px; height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--morado);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: inline-block;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Autocomplete herramientas ──────────────────────────────── */
.autocomplete-wrap { position: relative; }

.autocomplete-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0; right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 300;
  max-height: 280px;
  overflow-y: auto;
  display: none;
}

.autocomplete-dropdown.open { display: block; }

.autocomplete-group-label {
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.autocomplete-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  cursor: pointer;
  font-size: 14px;
  transition: background var(--transition);
  border-bottom: 1px solid var(--border);
}

.autocomplete-item:last-child { border-bottom: none; }
.autocomplete-item:hover { background: #faf5ff; }

.autocomplete-item .item-nombre { font-weight: 500; }
.autocomplete-item .item-tag { font-size: 11px; color: var(--text-muted); }

/* ── Wizard steps ───────────────────────────────────────────── */
.wizard-steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 28px;
}

.wizard-step {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.step-num {
  width: 30px; height: 30px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
  background: var(--border);
  color: var(--text-muted);
  flex-shrink: 0;
}

.wizard-step.active .step-num   { background: var(--morado); color: #fff; }
.wizard-step.done   .step-num   { background: var(--success); color: #fff; }

.step-label { font-size: 13px; color: var(--text-muted); }
.wizard-step.active .step-label { color: var(--morado); font-weight: 600; }

.step-line {
  flex: 1;
  height: 2px;
  background: var(--border);
  margin: 0 6px;
}

/* ── Page header ────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-title { font-size: 22px; color: var(--morado); }
.page-subtitle { font-size: 14px; color: var(--text-muted); margin-top: 2px; }

/* ── Alerts ─────────────────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius);
  border-left: 4px solid;
  font-size: 14px;
  margin-bottom: 16px;
}

.alert-info    { background: #dbeafe; border-color: var(--info); color: #1e40af; }
.alert-success { background: #dcfce7; border-color: var(--success); color: #166534; }
.alert-warning { background: #fef9c3; border-color: var(--warning); color: #854d0e; }
.alert-danger  { background: #fee2e2; border-color: var(--danger); color: #991b1b; }

/* ── Login page ─────────────────────────────────────────────── */
.login-body {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--morado) 0%, var(--morado-mid) 60%, var(--morado-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: var(--surface);
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  width: 100%;
  max-width: 420px;
  padding: 40px;
}

.login-logo {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo .logo-sigla {
  display: inline-block;
  width: 60px; height: 60px;
  background: var(--morado);
  border-radius: 14px;
  font-size: 26px; font-weight: 900;
  color: var(--gold);
  line-height: 60px;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.login-logo h1 {
  font-size: 20px;
  color: var(--morado);
}

.login-logo p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Footer ─────────────────────────────────────────────────── */
.app-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 32px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  margin-left: var(--sidebar-w);
}

/* ── Top herramientas (barra proporcional) ──────────────────── */
.herr-barra {
  height: 8px;
  background: var(--morado);
  border-radius: 999px;
  transition: width .6s ease;
}

/* ── Carrera cards (paso 1) ─────────────────────────────────── */
.carrera-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.carrera-card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.carrera-card:hover, .carrera-card.selected {
  border-color: var(--morado);
  background: #f0f4f8;
  box-shadow: var(--shadow-md);
}

.carrera-card.selected { border-color: var(--gold); }

.carrera-icon {
  width: 48px; height: 48px;
  background: var(--morado);
  border-radius: 10px;
  margin: 0 auto 12px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gold);
  font-size: 22px; font-weight: 900;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-overlay.visible { display: block; }
  .hamburger-btn { display: flex; }
  .main-wrapper, .app-footer { margin-left: 0; }
  .main-content { padding: 20px 16px; padding-top: 56px; }
}

@media (max-width: 768px) {
  .sesiones-grid { grid-template-columns: repeat(2, 1fr); }
  .sesion-cell { min-height: 56px; }
  .metrics-grid  { grid-template-columns: 1fr 1fr; }
  .form-row      { grid-template-columns: 1fr; }
  .page-header   { flex-direction: column; align-items: flex-start; }
  .btn           { width: 100%; justify-content: center; }
  .btn.btn-inline { width: auto; }
  .app-footer    { flex-direction: column; gap: 4px; text-align: center; }
  .table-wrapper thead { display: none; }
  .table-wrapper td {
    display: flex;
    gap: 8px;
    padding: 6px 12px;
  }
  .table-wrapper td::before {
    content: attr(data-label);
    font-weight: 700;
    min-width: 110px;
    color: var(--text-muted);
    font-size: 12px;
  }
  .table-wrapper tr { border-bottom: 2px solid var(--border); }
}