:root {
  --bg: #0f0f12;
  --surface: #18181c;
  --surface-hover: #1f1f24;
  --border: #2a2a30;
  --text: #e4e4e7;
  --text-muted: #a1a1aa;
  --accent: #22c55e;
  --accent-dim: #16a34a;
  --link: #38bdf8;
  --radius: 12px;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header / Hero */
.header {
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-title {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  letter-spacing: -0.02em;
  color: var(--text);
}

.hero-subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: clamp(0.9375rem, 2.5vw, 1.1rem);
  max-width: 36em;
}

.header-inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.back-link {
  font-size: 0.9rem;
  color: var(--link);
  text-decoration: none;
  align-self: flex-start;
}

.back-link:hover {
  text-decoration: underline;
}

/* Tarjetas de categoría (página de inicio) */
.grid-categories {
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .grid-categories {
    grid-template-columns: repeat(2, 1fr);
  }
}

.category-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}

.category-card:hover {
  background: var(--surface-hover);
  border-color: var(--accent-dim);
}

.category-card--soon {
  opacity: 0.85;
  cursor: default;
}

.category-card--soon:hover {
  border-color: var(--border);
  background: var(--surface);
}

.category-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  line-height: 1;
}

.category-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  color: var(--text);
}

.category-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0 0 1rem 0;
  line-height: 1.5;
  flex: 1;
}

.category-cta {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
}

.category-cta--muted {
  color: var(--text-muted);
}

.category-card:not(.category-card--soon):hover .category-cta {
  text-decoration: underline;
}

.footer-link {
  color: var(--link);
  text-decoration: none;
}

.footer-link:hover {
  text-decoration: underline;
}

.coming-soon {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* Main */
.main {
  flex: 1;
  padding: 2rem 0 3rem;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 1.5rem 0;
  color: var(--text);
}

/* Grid responsive: 1 col móvil, 2 tablet, 3 desktop */
.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 560px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }
}

/* Card con imagen */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, background 0.2s;
  display: flex;
  flex-direction: column;
}

.card:hover {
  background: var(--surface-hover);
  border-color: var(--accent-dim);
}

.card-image-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--bg);
  overflow: hidden;
}

.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.card-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--surface-hover) 0%, var(--border) 100%);
  color: var(--text-muted);
  font-size: 2.5rem;
  font-weight: 700;
  font-family: var(--font-sans);
}

.card-body {
  padding: 1.25rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-sector {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  color: var(--text);
  line-height: 1.3;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
  flex: 1;
}

.card-actions {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: background 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #0a0a0c;
}

.btn-primary:hover {
  background: var(--accent-dim);
  color: #0a0a0c;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
  color: var(--text);
}

/* Footer */
.footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
}

.footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}