:root {
  --color-primary: #0C447C;
  --color-vacation-bg: #E6F1FB;
  --color-sick: #791F1F;
  --color-sick-bg: #FCEBEB;
  --color-surface: #ffffff;
  --color-surface-1: #f8f8f7;
  --color-border: rgba(0,0,0,0.1);
  --color-text: #0b0b0b;
  --color-text-secondary: #52514e;
  --color-text-muted: #898781;
  --radius: 8px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-surface-1);
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* --- Login --- */

.login-body {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-1);
}

.login-card {
  width: 340px;
  max-width: calc(100vw - 40px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.login-logo {
  font-size: 22px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 24px;
  color: var(--color-text);
}

.login-logo span {
  color: var(--color-primary);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.login-form label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 8px;
}

.login-form input {
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 14px;
}

.login-form input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.login-form button {
  margin-top: 20px;
  padding: 10px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
}

.login-form button:hover {
  opacity: 0.92;
}

.login-error {
  background: var(--color-sick-bg);
  color: var(--color-sick);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 13px;
  margin-bottom: 12px;
}

/* --- App Layout --- */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 12px;
}

.app-header-left, .app-header-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.app-logo {
  font-size: 18px;
  font-weight: 700;
}

.app-logo span {
  color: var(--color-primary);
}

.tabs {
  display: flex;
  gap: 4px;
}

.tab-btn {
  padding: 8px 14px;
  border: none;
  background: transparent;
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--color-text-secondary);
}

.tab-btn:hover {
  background: var(--color-surface-1);
}

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

.user-info {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
}

.btn-primary:hover {
  opacity: 0.92;
}

.btn-secondary {
  background: var(--color-surface-1);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 14px;
}

.btn-secondary:hover {
  background: #efefee;
}

.btn-danger {
  background: var(--color-sick-bg);
  color: var(--color-sick);
  border: none;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  margin-right: auto;
}

.btn-danger:hover {
  opacity: 0.85;
}

.btn-logout {
  font-size: 13px;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: var(--radius);
}

.btn-logout:hover {
  background: var(--color-surface-1);
}

.status-banner {
  background: var(--color-vacation-bg);
  color: var(--color-primary);
  padding: 10px 24px;
  font-size: 14px;
  border-bottom: 1px solid var(--color-border);
}

.app-main {
  padding: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

/* --- Month View --- */

.month-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.month-nav h2 {
  margin: 0;
  min-width: 200px;
  text-align: center;
  font-size: 18px;
}

.month-nav button {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 6px 12px;
  font-size: 14px;
}

.month-nav button:hover {
  background: var(--color-surface-1);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.calendar-weekday {
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 4px;
}

.calendar-cell {
  min-height: 90px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 6px;
  position: relative;
}

.calendar-cell.empty {
  background: transparent;
  border: none;
}

.calendar-cell.today {
  border-color: var(--color-primary);
  border-width: 2px;
}

.calendar-day-num {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.calendar-entry {
  font-size: 11px;
  border-radius: 4px;
  padding: 2px 5px;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
}

.calendar-entry.urlaub {
  background: var(--color-vacation-bg);
  color: var(--color-primary);
}

.calendar-entry.krank {
  background: var(--color-sick-bg);
  color: var(--color-sick);
}

/* --- Week View --- */

.week-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
}

.week-table th, .week-table td {
  border: 1px solid var(--color-border);
  padding: 8px;
  font-size: 13px;
  text-align: center;
}

.week-table th {
  background: var(--color-surface-1);
  font-weight: 600;
}

.week-table td.employee-name {
  text-align: left;
  font-weight: 600;
}

.week-badge {
  display: inline-block;
  width: 22px;
  height: 22px;
  line-height: 22px;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}

.week-badge.urlaub {
  background: var(--color-vacation-bg);
  color: var(--color-primary);
}

.week-badge.krank {
  background: var(--color-sick-bg);
  color: var(--color-sick);
}

/* --- Year (Gantt) View --- */

.year-summary {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.summary-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 20px;
  min-width: 140px;
}

.summary-card .value {
  font-size: 22px;
  font-weight: 700;
}

.summary-card .label {
  font-size: 12px;
  color: var(--color-text-muted);
}

.gantt-wrapper {
  overflow-x: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
}

.gantt-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  align-items: center;
  min-height: 36px;
  border-bottom: 1px solid var(--color-border);
}

.gantt-row:last-child {
  border-bottom: none;
}

.gantt-name {
  font-size: 13px;
  font-weight: 600;
  padding-right: 12px;
}

.gantt-track {
  position: relative;
  height: 20px;
  background: var(--color-surface-1);
  border-radius: 4px;
  min-width: 720px;
}

.gantt-month-labels {
  display: grid;
  grid-template-columns: 140px 1fr;
  margin-bottom: 8px;
}

.gantt-month-labels .month-labels-track {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  min-width: 720px;
}

.gantt-month-labels .month-labels-track span {
  font-size: 11px;
  color: var(--color-text-muted);
  text-align: center;
}

.gantt-bar {
  position: absolute;
  top: 2px;
  height: 16px;
  border-radius: 3px;
  cursor: pointer;
}

.gantt-bar.urlaub {
  background: var(--color-primary);
}

.gantt-bar.krank {
  background: var(--color-sick);
}

/* --- Employees View --- */

.employee-actions {
  margin-bottom: 16px;
}

.employee-card-actions {
  margin-top: 10px;
  display: flex;
  gap: 14px;
}

.remove-link {
  font-size: 13px;
  color: var(--color-sick);
  cursor: pointer;
}

.employee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.employee-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
}

.employee-card h3 {
  margin: 0 0 8px 0;
  font-size: 16px;
}

.employee-card .row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 3px 0;
}

.employee-card .row strong {
  color: var(--color-text);
}

.employee-card .edit-link {
  margin-top: 10px;
  display: inline-block;
  font-size: 13px;
  color: var(--color-primary);
  cursor: pointer;
}

/* --- Modal --- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal-overlay[hidden] {
  display: none;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius);
  width: 420px;
  max-width: calc(100vw - 32px);
  max-height: calc(100vh - 64px);
  overflow-y: auto;
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
  margin: 0;
  font-size: 16px;
}

.modal-close {
  border: none;
  background: none;
  font-size: 22px;
  line-height: 1;
  color: var(--color-text-muted);
}

.modal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.modal-body label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 10px;
}

.modal-body select, .modal-body input {
  padding: 9px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 14px;
}

.type-toggle {
  display: flex;
  gap: 8px;
}

.type-btn {
  flex: 1;
  padding: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius);
  font-size: 14px;
}

.type-btn.active[data-type="urlaub"] {
  background: var(--color-vacation-bg);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.type-btn.active[data-type="krank"] {
  background: var(--color-sick-bg);
  color: var(--color-sick);
  border-color: var(--color-sick);
}

.date-row {
  display: flex;
  gap: 12px;
}

.date-row > div {
  flex: 1;
}

.form-error {
  background: var(--color-sick-bg);
  color: var(--color-sick);
  border-radius: var(--radius);
  padding: 8px 10px;
  font-size: 13px;
  margin-top: 10px;
}

.modal-actions {
  display: flex;
  align-items: center;
  margin-top: 18px;
  gap: 10px;
}

.changelog-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 400px;
}

.changelog-list li {
  font-size: 13px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 8px;
}

.changelog-list .changelog-time {
  display: block;
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

@media (min-width: 768px) {
  .app-main {
    padding: 32px 24px;
  }
}