/* =========================================================
   SoporteCR - Hoja de estilos
   Proyecto académico: HTML5 + CSS3 + JavaScript (sin frameworks)
   ========================================================= */

/* ---------- Variables globales (paleta y tipografías) ---------- */
:root {
  /* Colores base */
  --color-fondo: #F4F6F8;
  --color-superficie: #FFFFFF;
  --color-oscuro: #16222E;      /* Azul pizarra oscuro: header, hero, footer */
  --color-oscuro-2: #1F3040;    /* Variante un poco más clara del azul oscuro */
  --color-borde: #E1E7EC;

  /* Colores de texto */
  --color-texto: #16222E;
  --color-texto-suave: #5A6B7D;
  --color-texto-claro: #C9D6E0;

  /* Acentos (inspirados en luces de diagnóstico de hardware) */
  --color-acento: #00B4D8;      /* Cian: acciones principales, enlaces */
  --color-exito: #2ECC71;       /* Verde */
  --color-alerta: #FFB020;      /* Ámbar */
  --color-peligro: #FF6B6B;     /* Coral: errores */

  /* Tipografías */
  --fuente-titulos: 'Space Grotesk', sans-serif;
  --fuente-texto: 'Inter', sans-serif;
  --fuente-mono: 'JetBrains Mono', monospace;

  /* Sombras y bordes */
  --sombra-suave: 0 2px 10px rgba(22, 34, 46, 0.06);
  --sombra-media: 0 8px 24px rgba(22, 34, 46, 0.12);
  --radio: 12px;
}

/* ---------- Reset básico ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--fuente-texto);
  color: var(--color-texto);
  background-color: var(--color-fondo);
  line-height: 1.6;
}

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

a {
  text-decoration: none;
  color: inherit;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

.contenedor {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.oculto {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Foco visible para accesibilidad de teclado */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-acento);
  outline-offset: 2px;
}

/* =========================================================
   HEADER Y NAVEGACIÓN
   ========================================================= */
.site-header {
  background-color: var(--color-oscuro);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--sombra-suave);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--fuente-titulos);
  font-size: 1.25rem;
  color: #fff;
}

.logo-icon {
  color: var(--color-exito);
  font-size: 0.7rem;
}

.logo-texto strong {
  color: var(--color-acento);
}

.nav-principal {
  display: flex;
  gap: 28px;
}

.nav-link {
  color: var(--color-texto-claro);
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: #fff;
}

.badge {
  background-color: var(--color-acento);
  color: var(--color-oscuro);
  font-family: var(--fuente-mono);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 999px;
  min-width: 18px;
  text-align: center;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 26px;
}

.menu-toggle span {
  height: 2px;
  background-color: #fff;
  border-radius: 2px;
  transition: all 0.25s ease;
}

/* =========================================================
   HERO / BIENVENIDA
   ========================================================= */
.hero {
  background-color: var(--color-oscuro);
  color: #fff;
  padding: 72px 0 88px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--fuente-mono);
  color: var(--color-acento);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.hero-titulo {
  font-family: var(--fuente-titulos);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 18px;
}

.hero-titulo .acento {
  color: var(--color-acento);
}

.hero-descripcion {
  color: var(--color-texto-claro);
  font-size: 1.05rem;
  max-width: 46ch;
  margin-bottom: 32px;
}

/* Buscador con apariencia de terminal / consola */
.terminal-buscador {
  display: flex;
  align-items: center;
  background-color: var(--color-oscuro-2);
  border: 1px solid #2C4257;
  border-radius: var(--radio);
  padding: 6px 6px 6px 18px;
  gap: 10px;
  max-width: 480px;
}

.terminal-prompt {
  font-family: var(--fuente-mono);
  color: var(--color-exito);
  font-weight: 600;
}

.terminal-buscador input {
  flex: 1;
  background: none;
  border: none;
  color: #fff;
  font-family: var(--fuente-mono);
  font-size: 0.95rem;
  padding: 10px 0;
}

.terminal-buscador input::placeholder {
  color: #6C8399;
}

.btn-buscar {
  background-color: var(--color-acento);
  color: var(--color-oscuro);
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.btn-buscar:hover {
  background-color: #33C4E3;
}

/* Panel decorativo estilo "orden de servicio técnico" */
.hero-panel {
  background-color: var(--color-oscuro-2);
  border: 1px solid #2C4257;
  border-radius: var(--radio);
  font-family: var(--fuente-mono);
  font-size: 0.85rem;
  color: var(--color-texto-claro);
}

.ticket-encabezado {
  display: flex;
  justify-content: space-between;
  background-color: #14202B;
  padding: 12px 20px;
  border-radius: var(--radio) var(--radio) 0 0;
  color: var(--color-acento);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.ticket-numero {
  color: #6C8399;
}

.ticket-linea {
  display: flex;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px dashed #2C4257;
}

.ticket-linea:last-of-type {
  border-bottom: none;
}

.ticket-etiqueta {
  color: #6C8399;
}

.ticket-estado {
  color: var(--color-acento);
  font-weight: 600;
}

.ticket-pie {
  padding: 12px 20px;
  font-size: 0.72rem;
  color: #6C8399;
  border-top: 1px solid #2C4257;
}

/* =========================================================
   SECCIÓN DE PROBLEMAS
   ========================================================= */
.seccion-problemas,
.seccion-favoritos,
.seccion-historial {
  padding: 64px 0;
}

.seccion-favoritos {
  background-color: var(--color-superficie);
  border-top: 1px solid var(--color-borde);
  border-bottom: 1px solid var(--color-borde);
}

.seccion-titulo h2 {
  font-family: var(--fuente-titulos);
  font-size: 1.8rem;
  margin-bottom: 6px;
}

.seccion-titulo p {
  color: var(--color-texto-suave);
}

.seccion-titulo-flex {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}

/* Filtros de categoría */
.filtros {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 32px;
}

.filtro-btn {
  background-color: var(--color-superficie);
  border: 1px solid var(--color-borde);
  color: var(--color-texto-suave);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

.filtro-btn:hover {
  border-color: var(--color-acento);
  color: var(--color-oscuro);
}

.filtro-btn.activo {
  background-color: var(--color-oscuro);
  border-color: var(--color-oscuro);
  color: #fff;
}

/* Cuadrícula de tarjetas */
.grid-problemas {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

/* Tarjetas planas: sin sombra ni efecto al pasar el mouse
   (a pedido, los bloques de problemas no tienen hover). */
.tarjeta-problema {
  background-color: var(--color-superficie);
  border: 1px solid var(--color-borde);
  border-radius: var(--radio);
  padding: 22px;
  box-shadow: var(--sombra-suave);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tarjeta-cabecera {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.tarjeta-titulo {
  font-family: var(--fuente-titulos);
  font-size: 1.1rem;
  font-weight: 600;
}

.btn-favorito {
  font-size: 1.3rem;
  color: var(--color-borde);
  line-height: 1;
  transition: color 0.15s ease, transform 0.15s ease;
}

.btn-favorito:hover {
  transform: scale(1.15);
}

.btn-favorito.activo {
  color: var(--color-alerta);
}

.tarjeta-categoria {
  font-family: var(--fuente-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-acento);
}

.tarjeta-descripcion {
  color: var(--color-texto-suave);
  font-size: 0.92rem;
  flex-grow: 1;
}

.tarjeta-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--fuente-mono);
  font-size: 0.78rem;
  color: var(--color-texto-suave);
}

.btn-detalle {
  margin-top: 6px;
  align-self: flex-start;
  background-color: var(--color-oscuro);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 8px;
  transition: background-color 0.15s ease;
}

.btn-detalle:hover {
  background-color: var(--color-oscuro-2);
}

/* Mensajes de "sin resultados" y "error" */
.sin-resultados,
.mensaje-error {
  text-align: center;
  padding: 48px 20px;
  color: var(--color-texto-suave);
}

.sin-resultados-icono,
.mensaje-error-icono {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.btn-secundario {
  margin-top: 14px;
  background-color: var(--color-superficie);
  border: 1px solid var(--color-borde);
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-texto);
}

.btn-secundario:hover {
  border-color: var(--color-acento);
}

.btn-peligro {
  color: var(--color-peligro);
  border-color: rgba(255, 107, 107, 0.35);
}

.btn-peligro:hover {
  border-color: var(--color-peligro);
  background-color: rgba(255, 107, 107, 0.06);
}

/* =========================================================
   HISTORIAL
   ========================================================= */
.lista-historial {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 24px;
}

.historial-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background-color: var(--color-superficie);
  border: 1px solid var(--color-borde);
  border-radius: 10px;
  padding: 14px 18px;
}

.historial-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.historial-titulo {
  font-weight: 600;
}

.historial-fecha {
  font-family: var(--fuente-mono);
  font-size: 0.75rem;
  color: var(--color-texto-suave);
}

.lista-vacia {
  color: var(--color-texto-suave);
  text-align: center;
  padding: 32px 0;
}

/* =========================================================
   MODAL DE DETALLE
   ========================================================= */
.modal-fondo {
  position: fixed;
  inset: 0;
  background-color: rgba(22, 34, 46, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}

.modal {
  background-color: var(--color-superficie);
  border-radius: var(--radio);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
  box-shadow: var(--sombra-media);
}

.modal-cerrar {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 1.1rem;
  color: var(--color-texto-suave);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-cerrar:hover {
  background-color: var(--color-fondo);
}

.modal h3 {
  font-family: var(--fuente-titulos);
  font-size: 1.4rem;
  margin-bottom: 6px;
  padding-right: 30px;
}

.modal .tarjeta-categoria {
  display: block;
  margin-bottom: 16px;
}

.modal-seccion {
  margin-top: 20px;
}

.modal-seccion h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-texto-suave);
  margin-bottom: 10px;
}

.modal-seccion ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.modal-seccion li {
  padding-left: 20px;
  position: relative;
  font-size: 0.94rem;
}

.modal-seccion.sintomas li::before {
  content: "•";
  position: absolute;
  left: 4px;
  color: var(--color-peligro);
}

.modal-seccion.soluciones li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-exito);
  font-weight: 700;
}

/* =========================================================
   TOAST (aviso flotante)
   ========================================================= */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-oscuro);
  color: #fff;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 0.88rem;
  box-shadow: var(--sombra-media);
  z-index: 150;
  animation: aparecer 0.2s ease;
}

@keyframes aparecer {
  from { opacity: 0; transform: translate(-50%, 10px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background-color: var(--color-oscuro);
  color: var(--color-texto-claro);
  padding: 28px 0;
}

.footer-contenido {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.85rem;
}

.footer-tecnologias {
  font-family: var(--fuente-mono);
  color: #6C8399;
}

/* =========================================================
   RESPONSIVE - TABLET
   ========================================================= */
@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    order: -1;
  }
}

/* =========================================================
   RESPONSIVE - MÓVIL
   ========================================================= */
@media (max-width: 640px) {
  .menu-toggle {
    display: flex;
  }

  .nav-principal {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background-color: var(--color-oscuro);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }

  .nav-principal.abierto {
    max-height: 260px;
  }

  .nav-link {
    padding: 14px 24px;
    border-top: 1px solid #2C4257;
  }

  .hero {
    padding: 48px 0 56px;
  }

  .terminal-buscador {
    flex-wrap: wrap;
    max-width: 100%;
  }

  .btn-buscar {
    width: 100%;
  }

  .seccion-titulo-flex {
    align-items: flex-start;
  }

  .grid-problemas {
    grid-template-columns: 1fr;
  }

  .historial-item {
    flex-direction: column;
    align-items: flex-start;
  }
}