:root {
  --bg-main: #740909;
  --bg-main-soft: #8b0a0a;
  --bg-alt: #5c0606;
  --text-main: #edeced;
  --accent: #f3b03a;
  --accent-soft: rgba(243, 176, 58, 0.18);
  --radius-lg: 18px;
  --radius-xl: 24px;
  --shadow-soft: 0 14px 40px rgba(0,0,0,0.45);
  --shadow-card: 0 12px 24px rgba(0,0,0,0.35);
  --transition-fast: 0.2s ease;
}

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

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #9a1010 0, #570505 45%, #270101 100%);
  color: var(--text-main);
}

/* Utils */

.container {
  width: min(1120px, 100% - 32px);
  margin: 0 auto;
}

/* HEADER */

.main-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(135deg, #4f0404 0%, #740909 40%, #3a0202 100%);
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 18px rgba(0,0,0,0.55);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

/* Logo */

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.logo-mark {
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.logo-sub {
  font-size: 0.7rem;
  opacity: 0.8;
  letter-spacing: 0.2em;
}

/* NAV */

.main-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.main-nav a {
  text-decoration: none;
  color: var(--text-main);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.8;
  position: relative;
  padding-bottom: 4px;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-fast);
}

.main-nav a:hover {
  opacity: 1;
  transform: translateY(-1px);
}

.main-nav a:hover::after {
  width: 100%;
}

.btn-nav {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.24);
  background: rgba(0,0,0,0.18);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  font-size: 1.4rem;
  color: var(--text-main);
}

/* HERO */

.hero {
  padding: 56px 0 64px;
}

.hero-content {
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) minmax(0, 1.3fr);
  gap: 32px;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2.1rem, 3vw, 2.8rem);
  margin: 0 0 16px;
}

.hero-text p {
  margin: 0 0 24px;
  max-width: 540px;
  opacity: 0.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* BOTONES GENERALES */

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 0;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #fdd56a 100%);
  color: #3f2500;
  box-shadow: 0 16px 32px rgba(0,0,0,0.45);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(0,0,0,0.55);
}

.btn-secondary {
  background: rgba(0,0,0,0.2);
  color: var(--text-main);
  border: 1px solid rgba(255,255,255,0.25);
}

.btn-secondary:hover {
  background: rgba(0,0,0,0.4);
}

/* Hero tarjeta lateral */

.hero-side {
  display: flex;
  justify-content: flex-end;
}

.hero-card {
  background: radial-gradient(circle at top, #8b0a0a 0, #3d0202 60%, #1b0000 100%);
  border-radius: var(--radius-xl);
  padding: 24px 24px 28px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255,255,255,0.12);
}

.hero-card h2 {
  margin: 0 0 12px;
  font-size: 1.2rem;
}

.hero-card p {
  margin: 0;
  font-size: 0.95rem;
  opacity: 0.9;
}

/* SECCIONES GENERALES */

.section {
  padding: 48px 0;
}

.section-alt {
  background: radial-gradient(circle at top, #5a0505 0, #2b0101 100%);
}

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.section-intro {
  margin: 0 0 24px;
  max-width: 640px;
  opacity: 0.9;
}

/* GRID / CARDS */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card {
  background: linear-gradient(145deg, rgba(255,255,255,0.04), rgba(0,0,0,0.55));
  border-radius: var(--radius-lg);
  padding: 18px 18px 20px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255,255,255,0.1);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1rem;
}

.card p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.9;
}

/* FORMULARIO CONTACTO */

.contact-form {
  max-width: 520px;
  margin-top: 16px;
}

.form-row {
  display: flex;
  flex-direction: column;
  margin-bottom: 14px;
}

.form-row label {
  font-size: 0.85rem;
  margin-bottom: 4px;
  opacity: 0.9;
}

.form-row input,
.form-row textarea {
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.24);
  background: rgba(0,0,0,0.35);
  color: var(--text-main);
  padding: 8px 10px;
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(243,176,58,0.4);
  background: rgba(0,0,0,0.6);
}

/* FOOTER */

.main-footer {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 18px 0 20px;
  background: #200000;
}

.footer-content {
  text-align: center;
}

.footer-content p {
  margin: 2px 0;
  font-size: 0.8rem;
  opacity: 0.8;
}

.footer-small {
  font-size: 0.75rem;
}

/* RESPONSIVE */

@media (max-width: 900px) {
  .hero-content {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-side {
    justify-content: flex-start;
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-2 {
    grid-template-columns: minmax(0, 1fr);
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 56px;
    right: 16px;
    background: #350202;
    padding: 12px 16px;
    border-radius: 14px;
    flex-direction: column;
    align-items: flex-start;
    box-shadow: var(--shadow-soft);
  }

  .main-nav.is-open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }
}

@media (max-width: 600px) {
  .cards {
    grid-template-columns: minmax(0, 1fr);
  }
}