/* styles.css - hoja principal simplificada para mockup Aula Virtual MX */

:root {
  --color-primary: #1f4e79;
  --color-secondary: #f0b429;
  --color-accent: #e5533d;
  --color-bg: #f7f7f9;
  --color-bg-alt: #ffffff;
  --color-border: #dcdde1;
  --color-text: #333333;
  --color-muted: #777777;
  --font-base: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --space-xs: 0.4rem;
  --space-sm: 0.8rem;
  --space-md: 1.2rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.06);
}

*,
*::before,
*::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  font-size: 16px;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover { color: var(--color-accent); }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section { margin: var(--space-xl) 0; }

h1, h2, h3 { font-family: var(--font-heading); color: var(--color-primary); }

/* NAV */
.main-nav {
  background-color: var(--color-primary);
  box-shadow: var(--shadow-soft);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand img { height: 50px; width: auto; }

.menu {
  list-style: none;
  display: flex;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
}

.menu > li > a {
  display: block;
  padding: var(--space-md) var(--space-sm);
  color: #fff;
  font-weight: 500;
  font-size: 0.95rem;
}

.menu > li > a.active { color: var(--color-secondary); }

.has-submenu { position: relative; }
.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #fff;
  list-style: none;
  padding: var(--space-sm) 0;
  margin: 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.has-submenu:hover > .submenu,
.has-submenu:focus-within > .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.submenu li a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text);
}

/* HERO */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: center;
}

.hero-botones {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.hero-imagen img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

/* GRID CARDS */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-md);
}

.card {
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-soft);
}

.card p { color: var(--color-muted); font-size: 0.9rem; }

/* COMUNIDAD */
.comunidad-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.galeria-home {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-sm);
}

.galeria-home img {
  border-radius: var(--radius-md);
  height: 110px;
  object-fit: cover;
}

/* CTA */
.cta-box {
  background-color: var(--color-primary);
  color: #fff;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  text-align: center;
}

/* BOTONES */
.btn {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* TABLAS tipo RVOE */
.tabla-rvoe {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-md);
  background-color: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  font-size: 0.9rem;
}

.tabla-rvoe th,
.tabla-rvoe td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.tabla-rvoe thead {
  background-color: var(--color-primary);
  color: #fff;
}

/* FORMULARIO CONTACTO */
.form-contacto {
  max-width: 600px;
  margin-top: var(--space-md);
}

.form-row {
  margin-bottom: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-row input,
.form-row select,
.form-row textarea {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
}

/* FOOTER */
footer {
  background-color: #111827;
  color: #e5e7eb;
  padding: var(--space-md) 0;
  font-size: 0.85rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}