:root {
  --bg: #f4f7f8;
  --card: #ffffff;
  --text: #1d2a33;
  --muted: #5b6b75;
  --accent: #0d8c7a;
  --accent-dark: #0a6f61;
  --border: #d8e1e6;
  --danger: #b3261e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background: linear-gradient(160deg, #e7eff2 0%, #f8fbfc 70%);
  color: var(--text);
}

.container {
  max-width: 1180px;
  margin: 24px auto;
  padding: 0 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.tab-btn {
  width: auto;
  margin: 0;
  background: #dce5ea;
  color: #23343f;
}

.tab-btn.active {
  background: var(--accent);
  color: #fff;
}

label {
  display: block;
  margin: 8px 0 4px;
  font-size: 14px;
  color: var(--muted);
}

input, button, select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
}

button {
  margin-top: 10px;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
}

button:hover {
  background: var(--accent-dark);
}

button.secondary {
  width: auto;
  background: #dce5ea;
  color: #23343f;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 8px;
}

.albaran-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}

.albaran-head button {
  width: auto;
  margin-top: 0;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  border-bottom: 1px solid var(--border);
  padding: 8px;
  font-size: 13px;
  white-space: nowrap;
}

.pager {
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.pager span,
.muted {
  color: var(--muted);
  font-size: 13px;
}

.hidden {
  display: none;
}

.error {
  color: var(--danger);
  min-height: 20px;
}

@media (max-width: 860px) {
  .grid {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }

  .albaran-head {
    grid-template-columns: 1fr;
  }

  .pager {
    justify-content: center;
    flex-wrap: wrap;
  }
}

.albaran-actions {
  margin-top: 12px;
  display: flex;
  justify-content: flex-end;
}