:root {
  --color-primary: #1e40af;
  --color-primary-hover: #1d3a9e;
  --color-danger: #dc2626;
  --color-danger-hover: #b91c1c;
  --color-success-bg: #f0fdf4;
  --color-success-border: #bbf7d0;
  --color-success-text: #166534;
  --color-error-bg: #fef2f2;
  --color-error-border: #fecaca;
  --color-error-text: #991b1b;
  --color-text: #1f2937;
  --color-text-muted: #6b7280;
  --color-bg: #ffffff;
  --color-border: #e5e7eb;
  --color-surface: #f9fafb;
  --color-row-highlight: #eff6ff;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Naglowek */

header {
  padding: 2rem 1.5rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  flex-wrap: wrap;
}

header > *:not(.header-actions) {
  flex: none;
}

.header-left {
  flex: 1;
}

.header-actions {
  margin-left: auto;
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 1rem;
  flex: 0 0 auto;
  align-self: flex-start;
}

/* Trzy kreseczki nie sa czescia flexboxa naglowka - ukladamy blokujaco */
header {
  display: block;
  padding: 2rem 1.5rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

header .header-top {
  display: flex;
  align-items: center;
  gap: 1rem;
}

header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
}

.header-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-left: auto;
}

.bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 1rem;
}

.bars span {
  display: block;
  width: 40px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* Tresc glowna */

main {
  flex: 1;
  padding: 3rem 1.5rem;
  max-width: 640px;
  margin: 0 auto;
  width: 100%;
}

main.main-wide {
  max-width: 960px;
}

main h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

main h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-text);
}

main p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

.text-muted {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.section {
  margin-bottom: 2.5rem;
}

/* Stopka */

footer {
  padding: 1.5rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Alerty */

.alert {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
}

.alert-error {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error-text);
}

.alert-success {
  background: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  color: var(--color-success-text);
}

/* Formularze */

.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"] {
  width: 100%;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.15s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-group-inline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-group-inline label {
  margin-bottom: 0;
}

.form-group-inline input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  accent-color: var(--color-primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.hint {
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

/* Przyciski */

.btn {
  display: inline-block;
  padding: 0.625rem 1.25rem;
  border-radius: 6px;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: background 0.15s;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-border);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover {
  background: var(--color-surface);
}

.btn-danger {
  background: var(--color-danger);
  color: #ffffff;
}

.btn-danger:hover {
  background: var(--color-danger-hover);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

/* Tabela uzytkownikow */

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.table th {
  text-align: left;
  padding: 0.625rem 0.75rem;
  border-bottom: 2px solid var(--color-border);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.table td {
  padding: 0.625rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: middle;
}

.table tr:last-child td {
  border-bottom: none;
}

.table .row-current td {
  background: var(--color-row-highlight);
}

/* Responsywnosc */

@media (max-width: 640px) {
  header { padding: 1.5rem 1rem 1rem; }
  main { padding: 2rem 1rem; }
  main h2 { font-size: 1.5rem; }
  main p { font-size: 1rem; }
  .form-row { grid-template-columns: 1fr; }
  .table { font-size: 0.875rem; }
  .table th, .table td { padding: 0.5rem; }
}