/* ========================================================
   Blog Agregador — Izy Rodriguez
   Dark theme, cards grid, #00d4aa accent
   ======================================================== */

:root {
  --brand: #00d4aa;
  --brand-dim: rgba(0, 212, 170, 0.12);
}

[data-theme="dark"], body {
  --bg: #0f0f0f;
  --bg-alt: #1a1a2e;
  --text: #e0e0e0;
  --text-muted: #888;
  --text-heading: #fff;
  --border: #2a2a3e;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand);
}

/* Filtros */
.filters {
  max-width: 1200px;
  margin: 2rem auto 1rem;
  padding: 0 1.5rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.filter-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-right: 0.5rem;
}

.filter-btn {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--brand);
  color: #000;
  border-color: var(--brand);
}

/* Grid de cards */
.cards-grid {
  max-width: 1200px;
  margin: 0 auto 4rem;
  padding: 1rem 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 580px) {
  .cards-grid { grid-template-columns: 1fr; }
}

/* Card */
.card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 212, 170, 0.12);
}

.card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.card-image-placeholder {
  width: 100%;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(255,255,255,0.3);
}

.card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card-badge {
  display: inline-block;
  background: var(--brand-dim);
  color: var(--brand);
  border-radius: 4px;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  width: fit-content;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1.4;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-link {
  color: var(--brand);
  font-weight: 600;
  font-size: 0.85rem;
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}