:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --border: #dde1e6;
  --text: #1f2430;
  --muted: #6b7280;
  --primary: #2757c9;
  --primary-dark: #1c3f96;
  --green: #1a7d3b;
  --green-bg: #e5f6ea;
  --amber: #9a6b00;
  --amber-bg: #fff4d9;
  --red: #b3261e;
  --red-bg: #fbe9e7;
}

* { box-sizing: border-box; }

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 0;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1rem;
  position: sticky;
  top: 0;
  z-index: 40;
}

.topbar .brand { font-weight: 700; font-size: 1.05rem; }
.topbar .brand span { color: var(--primary); }

.topbar nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0;
  width: 100%;
}

.topbar nav a {
  color: var(--text);
  text-decoration: none;
  margin-left: 0;
  margin-right: 1rem;
  font-size: 0.92rem;
  padding: 0.3rem 0;
}
.topbar nav a:hover { color: var(--primary); }

.topbar form { display: inline; margin-left: auto; }
.topbar button.link {
  background: none; border: none; padding: 0.3rem 0; font: inherit; color: var(--muted);
  cursor: pointer;
}
.topbar button.link:hover { color: var(--red); }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.75rem 1.5rem 4rem;
}

@media (max-width: 640px) {
  .topbar { padding: 0.6rem 0.85rem; }
  .topbar nav { font-size: 0.9rem; }
  .topbar nav a { margin-right: 0.85rem; }
  .container { padding: 1.1rem 0.85rem 3rem; }
}

h1 { font-size: 1.4rem; margin: 0 0 1.25rem; }
h2 { font-size: 1.1rem; margin: 1.5rem 0 0.75rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 640px) {
  .card { padding: 1rem; }
}

.stats { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.stat {
  flex: 1; min-width: 140px;
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 1rem 1.25rem;
}

@media (max-width: 480px) {
  .stat { min-width: calc(50% - 0.5rem); }
}
.stat .n { font-size: 1.6rem; font-weight: 700; }
.stat .label { color: var(--muted); font-size: 0.85rem; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
}
.badge.pendiente { background: var(--amber-bg); color: var(--amber); }
.badge.pagado { background: var(--green-bg); color: var(--green); }
.badge.revisar { background: var(--red-bg); color: var(--red); }

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.6rem 0.7rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:hover td { background: #fafbfc; }

.thumb {
  width: 46px; height: 46px; object-fit: cover; border-radius: 6px; border: 1px solid var(--border);
  cursor: pointer;
}

/* Below this width, tables stop scrolling sideways and become stacked cards. */
@media (max-width: 640px) {
  .table-wrap table, .table-wrap thead, .table-wrap tbody, .table-wrap th, .table-wrap td, .table-wrap tr {
    display: block;
  }
  .table-wrap thead { display: none; }
  .table-wrap tr {
    border: 1px solid var(--border);
    border-radius: 8px;
    margin: 0.7rem;
    padding: 0.4rem 0.2rem;
  }
  .table-wrap td {
    border-bottom: none;
    padding: 0.4rem 0.9rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    text-align: right;
  }
  .table-wrap td.empty-cell { display: block; text-align: center; }
  .table-wrap td[data-label]::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    text-align: left;
  }
  .thumb { width: 56px; height: 56px; }
}

a.button, button.button {
  display: inline-block;
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.65rem 1.1rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  min-height: 44px;
  line-height: 1.2;
}
a.button:hover, button.button:hover { background: var(--primary-dark); }
a.button.secondary, button.button.secondary { background: var(--card); color: var(--text); border: 1px solid var(--border); }
a.button.secondary:hover { border-color: var(--primary); color: var(--primary); }
a.button.block, button.button.block { width: 100%; }

form.filters { display: flex; gap: 0.75rem; margin-bottom: 1rem; flex-wrap: wrap; align-items: center; }
input[type=text], input[type=number], input[type=password], select {
  padding: 0.6rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  min-height: 44px;
}
input[type=file] {
  font-size: 0.92rem;
  max-width: 100%;
}

.upload-drop {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 2rem;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 640px) {
  form.filters { flex-direction: column; align-items: stretch; }
  form.filters input, form.filters select, form.filters button, form.filters a.button {
    width: 100%;
  }
  .upload-drop { padding: 1.25rem 1rem; }
}

.error-msg {
  background: var(--red-bg); color: var(--red); border-radius: 8px; padding: 0.75rem 1rem; margin-bottom: 1rem;
}
.success-msg {
  background: var(--green-bg); color: var(--green); border-radius: 8px; padding: 0.75rem 1rem; margin-bottom: 1rem;
}

.review-item {
  display: flex; gap: 1.5rem; align-items: flex-start;
  border: 1px solid var(--border); border-radius: 10px; padding: 1rem; margin-bottom: 1rem;
}
.review-item img.crop { max-width: 260px; border-radius: 6px; border: 1px solid var(--border); }
.review-item .meta { color: var(--muted); font-size: 0.85rem; margin-bottom: 0.5rem; }
.review-item form { display: flex; gap: 0.5rem; align-items: center; margin-top: 0.75rem; }

.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 1rem;
}
.login-card { width: 340px; max-width: 100%; }

.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.65);
  display: none; align-items: center; justify-content: center; z-index: 50;
  padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal-overlay img { max-width: 92vw; max-height: 90vh; border-radius: 8px; }

@media (max-width: 640px) {
  .review-item { flex-direction: column; gap: 0.75rem; }
  .review-item img.crop { max-width: 100%; width: 100%; }
  .review-item form { flex-wrap: wrap; }
  .review-item form input[type=text] { flex: 1 1 auto; min-width: 0; }
  .review-item form button.button { flex: 1 1 100%; }
}

.muted { color: var(--muted); }
.numero-cell { font-variant-numeric: tabular-nums; font-weight: 600; }