/* ============================================================
   NOTA TÉCNICA BACHILLERES — Diseño profesional gubernamental
   Paleta: azul marino institucional + dorado + blanco roto
   Tipografía: Barlow Condensed (títulos) + Source Sans 3 (cuerpo)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;600;700;800&family=Source+Sans+3:wght@300;400;600;700&display=swap');

/* ── Variables ──────────────────────────────────────────── */
:root {
  --azul-oscuro:   #0a1628;
  --azul-medio:    #0d2452;
  --azul-vivo:     #1a3a8f;
  --azul-acento:   #2563eb;
  --dorado:        #c9a84c;
  --dorado-claro:  #e8c96a;
  --blanco:        #ffffff;
  --gris-fondo:    #f0f4f9;
  --gris-borde:    #d1dbed;
  --gris-texto:    #4a5568;
  --verde-exito:   #059669;
  --rojo-error:    #dc2626;
  --sombra-sm:     0 2px 8px rgba(10,22,40,.10);
  --sombra-md:     0 6px 24px rgba(10,22,40,.14);
  --sombra-lg:     0 16px 48px rgba(10,22,40,.18);
  --radio:         10px;
  --transicion:    .22s cubic-bezier(.4,0,.2,1);
}

/* ── Reset base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
  font-family: 'Source Sans 3', sans-serif;
  background: var(--gris-fondo);
  color: var(--azul-oscuro);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── TOPBAR ─────────────────────────────────────────────── */
.topbar {
  background: var(--azul-oscuro);
  color: rgba(255,255,255,.55);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 5px 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar span { display: flex; align-items: center; gap: .4rem; }

/* ── HEADER ─────────────────────────────────────────────── */
.site-header {
  background: linear-gradient(135deg, var(--azul-oscuro) 0%, var(--azul-medio) 60%, var(--azul-vivo) 100%);
  padding: 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
  position: relative;
  box-shadow: var(--sombra-md);
  overflow: hidden;
}
.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  text-decoration: none;
}
.header-logo {
  width: 52px; height: 52px;
  background: var(--dorado);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(201,168,76,.35);
}
.header-logo svg { width: 30px; height: 30px; fill: var(--azul-oscuro); }
.header-titles { line-height: 1.2; }
.header-titles h1 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--blanco);
  letter-spacing: .02em;
  text-transform: uppercase;
}
.header-titles p {
  font-size: .78rem;
  color: var(--dorado-claro);
  letter-spacing: .06em;
  text-transform: uppercase;
  font-weight: 600;
}
.header-badge {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 8px;
  padding: .5rem 1rem;
  text-align: right;
  backdrop-filter: blur(6px);
}
.header-badge .badge-label {
  font-size: .68rem;
  color: rgba(255,255,255,.5);
  text-transform: uppercase;
  letter-spacing: .08em;
}
.header-badge .badge-value {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dorado-claro);
}

/* ── NAVBAR ─────────────────────────────────────────────── */
.site-nav {
  background: var(--azul-medio);
  padding: 0 2.5rem;
  display: flex;
  align-items: stretch;
  gap: 0;
  box-shadow: 0 3px 12px rgba(10,22,40,.25);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.nav-item {
  position: relative;
}
.nav-item > a,
.nav-group > .nav-group-trigger {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .9rem 1.1rem;
  color: rgba(255,255,255,.78);
  text-decoration: none;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background var(--transicion), color var(--transicion);
  cursor: pointer;
  border: none;
  background: transparent;
  font-family: 'Source Sans 3', sans-serif;
}
.nav-item > a:hover,
.nav-group > .nav-group-trigger:hover,
.nav-item.active > a {
  background: rgba(255,255,255,.1);
  color: var(--dorado-claro);
}
.nav-item > a svg, .nav-group-trigger svg { width: 15px; height: 15px; flex-shrink: 0; }
.nav-item > a .chevron, .nav-group-trigger .chevron {
  width: 12px; height: 12px;
  margin-left: .1rem;
  transition: transform var(--transicion);
}

/* Dropdown grupo exportar */
.nav-group { position: relative; }
.nav-group-trigger { border-radius: 0; }
.nav-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--azul-oscuro);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 0 0 var(--radio) var(--radio);
  box-shadow: var(--sombra-lg);
  z-index: 2000;
  overflow: hidden;
  animation: dropIn .18s ease;
}
@keyframes dropIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.nav-group:hover .nav-dropdown,
.nav-group.open  .nav-dropdown { display: block; }
.nav-group:hover .chevron,
.nav-group.open  .chevron      { transform: rotate(180deg); }

.nav-dropdown a {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .72rem 1.2rem;
  color: rgba(255,255,255,.75);
  text-decoration: none;
  font-size: .81rem;
  font-weight: 400;
  letter-spacing: .02em;
  transition: background var(--transicion), color var(--transicion), padding var(--transicion);
  border-left: 3px solid transparent;
}
.nav-dropdown a:hover {
  background: rgba(255,255,255,.07);
  color: var(--dorado-claro);
  border-left-color: var(--dorado);
  padding-left: 1.5rem;
}
.nav-dropdown a svg { width: 14px; height: 14px; opacity: .65; flex-shrink: 0; }
.nav-dropdown-sep {
  height: 1px;
  background: rgba(255,255,255,.07);
  margin: .3rem 0;
}

/* ── CONTENIDO PRINCIPAL ────────────────────────────────── */
.page-wrapper {
  max-width: 960px;
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

/* ── CARD ────────────────────────────────────────────────── */
.card {
  background: var(--blanco);
  border-radius: 14px;
  box-shadow: var(--sombra-md);
  overflow: hidden;
  animation: fadeUp .35s ease;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
.card-header {
  background: linear-gradient(135deg, var(--azul-medio), var(--azul-vivo));
  padding: 1.6rem 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.card-header-icon {
  width: 44px; height: 44px;
  background: rgba(255,255,255,.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.card-header-icon svg { width: 22px; height: 22px; stroke: var(--dorado-claro); fill: none; }
.card-header h2 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--blanco);
  letter-spacing: .04em;
  text-transform: uppercase;
  line-height: 1.2;
}
.card-header p {
  font-size: .78rem;
  color: rgba(255,255,255,.6);
  margin-top: .15rem;
}
.card-body { padding: 2rem; }

/* ── SELECTOR DE QUINCENA ───────────────────────────────── */
.quincena-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  margin-bottom: 1.8rem;
}
.form-group label {
  display: block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--gris-texto);
  margin-bottom: .45rem;
}
.form-group label svg {
  width: 13px; height: 13px;
  vertical-align: middle;
  margin-right: .3rem;
  opacity: .6;
}
.form-select {
  width: 100%;
  padding: .72rem 2.4rem .72rem 1rem;
  border: 2px solid var(--gris-borde);
  border-radius: 8px;
  font-family: 'Source Sans 3', sans-serif;
  font-size: .95rem;
  font-weight: 600;
  color: var(--azul-oscuro);
  background: var(--blanco) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234a5568' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right .75rem center;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: border-color var(--transicion), box-shadow var(--transicion);
}
.form-select:focus {
  outline: none;
  border-color: var(--azul-acento);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.form-select:hover { border-color: #8fa8d0; }

/* ── BOTÓN PRINCIPAL ────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  padding: .85rem 2.2rem;
  background: linear-gradient(135deg, var(--azul-vivo), var(--azul-acento));
  color: var(--blanco);
  border: none;
  border-radius: 9px;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform var(--transicion), box-shadow var(--transicion), filter var(--transicion);
  box-shadow: 0 4px 14px rgba(26,58,143,.35);
  text-decoration: none;
}
.btn-primary svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(26,58,143,.45);
  filter: brightness(1.08);
}
.btn-primary:active { transform: translateY(0); }

.btn-upload {
  background: linear-gradient(135deg, #065f46, var(--verde-exito));
  box-shadow: 0 4px 14px rgba(5,150,105,.3);
}
.btn-upload:hover { box-shadow: 0 8px 22px rgba(5,150,105,.4); }

.btn-action-row {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: .5rem;
}

/* ── UPLOAD ZONE ────────────────────────────────────────── */
.upload-zone {
  border: 2.5px dashed var(--gris-borde);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transicion), background var(--transicion);
  background: #f8fafd;
  margin-bottom: 1.5rem;
  position: relative;
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--azul-acento);
  background: rgba(37,99,235,.04);
}
.upload-zone input[type=file] {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  opacity: 0;
  cursor: pointer;
}
.upload-icon {
  width: 52px; height: 52px;
  background: rgba(37,99,235,.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto .9rem;
}
.upload-icon svg { width: 24px; height: 24px; stroke: var(--azul-acento); fill: none; }
.upload-zone h3 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--azul-medio);
  letter-spacing: .03em;
  margin-bottom: .3rem;
}
.upload-zone p { font-size: .82rem; color: var(--gris-texto); }
.upload-filename {
  display: none;
  margin-top: .8rem;
  padding: .4rem .9rem;
  background: rgba(5,150,105,.1);
  color: var(--verde-exito);
  border-radius: 6px;
  font-size: .82rem;
  font-weight: 600;
}
.upload-filename.visible { display: inline-flex; align-items: center; gap: .4rem; }

/* ── HOME — GRID DE MÓDULOS ─────────────────────────────── */
.modules-intro {
  text-align: center;
  margin-bottom: 2.5rem;
  animation: fadeUp .3s ease;
}
.modules-intro h2 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--azul-medio);
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: .4rem;
}
.modules-intro p { font-size: .92rem; color: var(--gris-texto); }
.modules-intro .divider {
  width: 60px; height: 4px;
  background: linear-gradient(90deg, var(--dorado), var(--dorado-claro));
  border-radius: 2px;
  margin: .8rem auto 0;
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.4rem;
}
.module-card {
  background: var(--blanco);
  border-radius: 14px;
  box-shadow: var(--sombra-sm);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: transform var(--transicion), box-shadow var(--transicion);
  animation: fadeUp .35s ease both;
  border: 1px solid rgba(209,219,237,.6);
}
.module-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sombra-lg);
}
.module-card-stripe {
  height: 5px;
}
.module-card-body {
  padding: 1.4rem 1.5rem 1.2rem;
  flex: 1;
}
.module-card-icon {
  width: 46px; height: 46px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: .9rem;
}
.module-card-icon svg { width: 22px; height: 22px; }
.module-card h3 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--azul-oscuro);
  margin-bottom: .3rem;
}
.module-card p { font-size: .8rem; color: var(--gris-texto); line-height: 1.5; }
.module-card-footer {
  padding: .8rem 1.5rem;
  border-top: 1px solid var(--gris-borde);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.module-card-footer svg { width: 14px; height: 14px; }

/* Colores por módulo */
.mod-importar .module-card-stripe { background: linear-gradient(90deg, #065f46, #059669); }
.mod-importar .module-card-icon   { background: rgba(5,150,105,.12); }
.mod-importar .module-card-icon svg { stroke: #059669; fill: none; }
.mod-importar .module-card-footer { color: #059669; }

.mod-nota .module-card-stripe { background: linear-gradient(90deg, var(--azul-medio), var(--azul-acento)); }
.mod-nota .module-card-icon   { background: rgba(37,99,235,.12); }
.mod-nota .module-card-icon svg { stroke: var(--azul-acento); fill: none; }
.mod-nota .module-card-footer { color: var(--azul-acento); }

.mod-exportar .module-card-stripe { background: linear-gradient(90deg, #7c3aed, #a855f7); }
.mod-exportar .module-card-icon   { background: rgba(168,85,247,.12); }
.mod-exportar .module-card-icon svg { stroke: #a855f7; fill: none; }
.mod-exportar .module-card-footer { color: #7c3aed; }

/* Delay escalonado */
.module-card:nth-child(1) { animation-delay: .05s; }
.module-card:nth-child(2) { animation-delay: .10s; }
.module-card:nth-child(3) { animation-delay: .15s; }
.module-card:nth-child(4) { animation-delay: .20s; }
.module-card:nth-child(5) { animation-delay: .25s; }

/* ── MENSAJES RESULTADO ──────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
  padding: 1.1rem 1.4rem;
  border-radius: 10px;
  margin-bottom: 1.5rem;
  font-size: .88rem;
  animation: fadeUp .3s ease;
}
.alert svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: .05rem; }
.alert-success { background: rgba(5,150,105,.08); border-left: 4px solid var(--verde-exito); color: #065f46; }
.alert-success svg { stroke: var(--verde-exito); fill: none; }
.alert-error   { background: rgba(220,38,38,.08); border-left: 4px solid var(--rojo-error); color: #991b1b; }
.alert-error svg { stroke: var(--rojo-error); fill: none; }
.alert strong { display: block; font-weight: 700; margin-bottom: .2rem; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--azul-acento);
  text-decoration: none;
  font-size: .85rem;
  font-weight: 600;
  transition: gap var(--transicion);
}
.back-link:hover { gap: .65rem; }
.back-link svg { width: 15px; height: 15px; }

/* ── FOOTER ─────────────────────────────────────────────── */
.site-footer {
  background: var(--azul-oscuro);
  color: rgba(255,255,255,.35);
  text-align: center;
  padding: 1.1rem 2rem;
  font-size: .72rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  margin-top: auto;
}
.site-footer span { color: var(--dorado); }

/* ── BARRA DE PROGRESO ──────────────────────────────────── */
.progress-wrap {
  background: #e2e8f0;
  border-radius: 99px;
  height: 10px;
  overflow: hidden;
  margin: 1rem 0;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--azul-vivo), var(--azul-acento));
  border-radius: 99px;
  transition: width .3s ease;
}

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 640px) {
  .site-header { padding: 0 1.2rem; min-height: 64px; }
  .header-badge { display: none; }
  .site-nav { padding: 0 .5rem; overflow-x: auto; gap: 0; }
  .nav-item > a, .nav-group-trigger { padding: .8rem .7rem; font-size: .74rem; }
  .page-wrapper { padding: 1.5rem 1rem 3rem; }
  .quincena-grid { grid-template-columns: 1fr; }
  .card-body { padding: 1.4rem; }
  .card-header { padding: 1.2rem 1.4rem; }
  .modules-grid { grid-template-columns: 1fr; }
  .topbar { display: none; }
}