:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #dfe3e8;
  --text: #1c1f26;
  --text-muted: #5b6472;
  --primary: #2757c7;
  --primary-hover: #1e46a3;
  --danger: #c0392b;
  --danger-hover: #a5301f;
  --ok-bg: #eaf6ec;
  --ok-text: #1e6b34;
  --warn-bg: #fdf3e0;
  --warn-text: #8a5a00;
  --pistachio: #7fa65c;
  --pistachio-hover: #6c8e4c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1d2025;
    --border: #33373f;
    --text: #e7e9ec;
    --text-muted: #9aa2ad;
    --primary: #5b8cff;
    --primary-hover: #7ba1ff;
    --danger: #e5766a;
    --danger-hover: #ef8e83;
    --ok-bg: #17301e;
    --ok-text: #7fd996;
    --warn-bg: #362a10;
    --warn-text: #f0c463;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--primary); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

/* ---------------------------------------------------------- site header */
.site-top {
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.brand { display: flex; align-items: flex-end; gap: 18px; text-decoration: none; color: var(--text); }
.logo-plate {
  background: #ffffff;
  padding: 4px 0;
  display: inline-flex;
  align-items: center;
}
.logo-img { display: block; height: 68px; width: auto; }
.brand-contact { display: flex; flex-direction: column; justify-content: center; gap: 3px; }
.brand-line { font-size: 0.85rem; color: var(--text-muted); line-height: 1.3; }

.site-nav { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 8px 12px;
  border-radius: 6px;
}
.site-nav a:hover { color: var(--text); background: var(--bg); }
.site-nav a.btn-area-cliente {
  color: #fff;
  background: var(--primary);
}
.site-nav a.btn-area-cliente:hover { background: var(--primary-hover); }

/* ----------------------------------------------------------- category nav */
.category-nav {
  background: var(--pistachio);
}
.category-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
}
.category-nav li a {
  display: inline-block;
  color: #ffffff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 14px;
  white-space: nowrap;
}
.category-nav li a:hover { background: var(--pistachio-hover); }

.area-cliente-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 12px 0;
}
.area-cliente-titulo { color: #ffffff; font-weight: 600; font-size: 0.92rem; }
.area-cliente-edicion { display: flex; align-items: center; gap: 8px; }
.area-cliente-edicion label { color: #ffffff; font-size: 0.85rem; }
.area-cliente-edicion select {
  background: #ffffff;
  color: var(--text);
  border: none;
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.85rem;
  font-family: inherit;
}

/* ---------------------------------------------------------------- hero */
.hero {
  padding: 72px 0 56px;
  text-align: center;
}
.hero h1 { font-size: 2.4rem; margin: 0 0 14px; line-height: 1.15; }
.hero p.lead { color: var(--text-muted); font-size: 1.1rem; max-width: 60ch; margin: 0 auto 28px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ------------------------------------------------------------- buttons */
.btn {
  display: inline-block;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  padding: 11px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-secundario {
  background: transparent;
  color: var(--primary);
}
.btn-secundario:hover { background: var(--bg); }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger-hover); border-color: var(--danger-hover); }
.btn-sm { padding: 6px 12px; font-size: 0.82rem; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

/* --------------------------------------------------------------- cards */
.section { padding: 48px 0; }
.section h2 { font-size: 1.6rem; margin: 0 0 8px; text-align: center; }
.section p.section-lead { color: var(--text-muted); text-align: center; max-width: 60ch; margin: 0 auto 32px; }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}
.card { scroll-margin-top: 130px; }
.card h3 { margin: 0 0 8px; font-size: 1.1rem; }
.card p { margin: 0; color: var(--text-muted); font-size: 0.92rem; line-height: 1.5; }
.card .icon { font-size: 1.8rem; margin-bottom: 10px; }

/* -------------------------------------------------------------- footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 40px;
  padding: 28px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.site-footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* --------------------------------------------------------------- forms */
.form-card {
  max-width: 420px;
  margin: 64px auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
}
.form-card h1 { font-size: 1.3rem; margin: 0 0 4px; text-align: center; }
.form-card p.subtitle { color: var(--text-muted); text-align: center; margin: 0 0 24px; font-size: 0.88rem; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
}
.form-error {
  background: var(--warn-bg);
  color: var(--warn-text);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}
.form-success {
  background: var(--ok-bg);
  color: var(--ok-text);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}
.form-card .btn { width: 100%; }

/* --------------------------------------------------------------- portal */
.portal-header {
  padding: 18px 0 10px;
}
.portal-header .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.portal-header h1 { margin: 0; font-size: 1.2rem; }
.portal-header .subtitle { color: var(--text-muted); font-size: 0.85rem; margin: 2px 0 0; }

.app-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}
.app-tile {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  text-decoration: none;
  color: var(--text);
}
.app-tile:hover { border-color: var(--primary); }
.app-tile .icon { font-size: 1.6rem; }
.app-tile h3 { margin: 10px 0 4px; font-size: 1.05rem; }
.app-tile p { margin: 0; color: var(--text-muted); font-size: 0.85rem; }

.empty-state {
  color: var(--text-muted);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
}

.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 28px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.stat-card .n { font-size: 1.6rem; font-weight: 700; }
.stat-card .label { color: var(--text-muted); font-size: 0.82rem; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 18px; flex-wrap: wrap; }
.tab-link {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-family: inherit;
  padding: 10px 16px;
  cursor: pointer;
  text-decoration: none;
}
.tab-link:hover { color: var(--text); }
.tab-link.activa { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab-panel { display: none; }
.tab-panel.activa { display: block; }

table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
th, td { text-align: left; padding: 10px 12px; font-size: 0.85rem; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 600; background: var(--bg); }
tr:last-child td { border-bottom: none; }
.table-wrap { overflow-x: auto; border-radius: 10px; }

.pastilla { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 0.78rem; font-weight: 600; }
.pastilla.ok { background: var(--ok-bg); color: var(--ok-text); }
.pastilla.warn { background: var(--warn-bg); color: var(--warn-text); }

.informe-card { margin-bottom: 22px; }
.informe-form { display: flex; gap: 16px; flex-wrap: wrap; align-items: end; }
.informe-tipo-group { flex: 1 1 300px; margin-bottom: 0; }
.informe-formato-group { margin-bottom: 0; }
.informe-formato-opciones { display: flex; gap: 14px; padding-top: 10px; }
.radio-item { display: flex; align-items: center; gap: 3px; font-size: 0.88rem; }
.radio-item input[type="radio"] { margin: 0; }
.informe-form .btn { white-space: nowrap; }

.checkbox-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; margin: 10px 0; }
.checkbox-item { display: flex; align-items: center; gap: 8px; font-size: 0.88rem; }

.form-nuevo-cliente { grid-template-columns: 2fr 2fr 1.5fr auto; align-items: end; }

.admin-table-actions { display: flex; gap: 6px; flex-wrap: wrap; }

main { padding-bottom: 40px; }

/* --------------------------------------------------------------- responsive */
@media (max-width: 900px) {
  .hero h1 { font-size: 2rem; }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }

  .site-header .container { gap: 12px 20px; }
  .logo-img { height: 46px; }
  .brand { gap: 12px; }
  .brand-contact { display: none; }
  .site-nav { width: 100%; gap: 2px; }
  .site-nav a { padding: 8px 10px; font-size: 0.85rem; }

  .category-nav ul { gap: 2px 4px; }
  .category-nav li a { padding: 9px 10px; font-size: 0.83rem; }

  .hero { padding: 40px 0 32px; }
  .hero h1 { font-size: 1.6rem; }
  .hero p.lead { font-size: 0.95rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }

  .section { padding: 32px 0; }
  .section h2 { font-size: 1.35rem; }

  .form-card { margin: 32px auto; padding: 24px 20px; }

  .portal-header .container { flex-direction: column; align-items: flex-start; gap: 10px; }
  .portal-header .container > div:last-child { width: 100%; display: flex; }

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

  .form-nuevo-cliente { grid-template-columns: 1fr; }
  .form-nuevo-cliente button { width: 100%; }

  .site-footer .container { flex-direction: column; gap: 6px; }
}