/* ===================== VARIABLES DE COLOR ===================== */
:root {
  --bg-page: #f5f7fa;
  --bg-card: #ffffff;
  --bg-muted: #eef1f5;

  --color-primary: #2f6fed;
  --color-primary-hover: #255ad1;
  --color-header: #e9eef7;

  --text-main: #1f2937;
  --text-muted: #6b7280;
  --text-light: #4b5563;
  --text-invert: #ffffff;

  --border-color: #d1d5db;
  --border-soft: #e5e7eb;

  --shadow-soft: 0 1px 4px rgba(0,0,0,0.06);
  --shadow-card: 0 4px 12px rgba(0,0,0,0.07);

  --hover-bg: #f3f4f6;
}

/* ===================== RESET ===================== */
* {
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg-page);
  display: flex;
  flex-direction: column;
  color: var(--text-main);
}

/* ===================== HEADER ===================== */
header {
  background: var(--color-header);
  padding: 14px 16px;
}

header input {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

/* ===================== LAYOUT ===================== */
.container {
  flex: 1;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px;
  padding: 20px;
  align-items: start;
}

/* ===================== ASIDE ===================== */
aside {
  background: var(--bg-card);
  padding: 18px;
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
}

aside h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.filter-group {
  margin-bottom: 18px;
}

.filter-group strong {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
}

.filter-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
}

.filter-group input[type="number"] {
  width: 100%;
  padding: 8px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  margin-bottom: 8px;
}

#apply-filters {
  width: 100%;
  padding: 10px;
  background: var(--color-primary);
  color: var(--text-invert);
  border: none;
  border-radius: 8px;
  font-weight: bold;
}

/* ===================== GRID DE CARDS ===================== */
main {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

/* ===================== CARD ===================== */
.card {
  background: var(--bg-card);
  border-radius: 14px;
  padding: 14px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.card h4 {
  margin: 0;
  font-size: 15px;
  line-height: 1.3;
}

.price {
  font-size: 20px;
  font-weight: bold;
  color: var(--color-primary);
}

.meta {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.35;
}

/* ===================== PAGINACIÓN ===================== */
.pagination {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: 28px 0;
}

.pagination button {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  font-size: 14px;
}

.pagination button.active {
  background: var(--color-primary);
  color: var(--text-invert);
  border-color: var(--color-primary);
}

/* ===================== FOOTER ===================== */
.legal-footer {
  background: var(--bg-muted);
  padding: 16px;
  font-size: 12px;
  color: var(--text-light);
  text-align: center;
  border-top: 1px solid var(--border-soft);
}

/* ===================== MOBILE ===================== */
@media (max-width: 900px) {
  .container {
    grid-template-columns: 1fr;
    padding: 12px;
  }

  aside {
    order: -1;
  }
}

/* ===================== MOBILE COMPACT (CLAVE) ===================== */
@media (max-width: 600px) {
  main {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .card {
    padding: 12px;
    border-radius: 12px;
  }

  .card h4 {
    font-size: 14px;
  }

  .price {
    font-size: 18px;
  }

  .meta {
    font-size: 12px;
  }
}