:root {
  --color-primary: #7ca500;
  --color-accent: #f26623;
  --color-accent-hover: #c2521c;
  --color-link: #52a2c2;
  --color-bg: #ffffff;
  --color-bg-page: #e5e5e5;
  --color-text: #333333;
  --color-text-strong: #000000;
  --color-muted: #888888;
  --color-border: #bbbbbb;
  --color-border-light: #dddddd;
  --color-error: #cc0000;
  --color-success: #7ca500;
  --color-nav-dark: #555555;
  --radius: 6px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg-page);
  line-height: 1.5;
  display: flex;
  flex-direction: column;
}

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

img {
  max-width: 100%;
  height: auto;
}

.site-header {
  background: var(--color-bg);
  border-bottom: 3px solid var(--color-primary);
  box-shadow: var(--shadow);
}

.site-header__inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-header__logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__club {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0 0 0.15rem;
}

.site-header__title {
  margin: 0;
  font-size: 1.5rem;
  color: var(--color-text-strong);
  line-height: 1.2;
}

.site-header__subtitle {
  margin: 0.2rem 0 0;
  font-size: 0.95rem;
  color: var(--color-primary);
}

.site-main {
  flex: 1;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2rem;
}

.site-footer {
  background: var(--color-nav-dark);
  color: #fff;
  text-align: center;
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
}

.site-footer a {
  color: #fff;
  text-decoration: underline;
}

.card {
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.card h2 {
  margin: 0 0 1.25rem;
  font-size: 1.25rem;
  color: var(--color-text-strong);
}

.form-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .form-grid--2 {
    grid-template-columns: 1fr 1fr;
  }
}

.field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 44px;
  padding: 0.55rem 0.75rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
  border-color: var(--color-primary);
}

.field textarea {
  min-height: 100px;
  resize: vertical;
}

.field__error {
  color: var(--color-error);
  font-size: 0.85rem;
  margin-top: 0.35rem;
  min-height: 1.2em;
}

.field--invalid input,
.field--invalid select,
.field--invalid textarea {
  border-color: var(--color-error);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.6rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
}

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

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

.btn--secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background: rgba(124, 165, 0, 0.1);
}

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

.btn--small {
  min-height: 36px;
  padding: 0.35rem 0.75rem;
  font-size: 0.875rem;
}

.btn__icon {
  display: inline-flex;
  width: 1.125rem;
  height: 1.125rem;
  flex-shrink: 0;
}

.btn__icon svg {
  width: 100%;
  height: 100%;
}

.btn--icon-desktop {
  gap: 0.35rem;
}

@media (min-width: 640px) {
  td.data-table__actions {
    white-space: nowrap;
  }

  td.data-table__actions .btn--icon-desktop {
    padding: 0.4rem 0.5rem;
    min-width: 2.25rem;
    vertical-align: middle;
    margin-right: 0.25rem;
  }

  td.data-table__actions .btn--icon-desktop:last-child {
    margin-right: 0;
  }

  td.data-table__actions .btn--icon-desktop .btn__label {
    display: none;
  }
}

.btn-group--devices-row {
  flex-wrap: wrap;
}

.btn-group--devices-row .btn {
  flex: 1 1 auto;
  min-width: 0;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
}

.alert--success {
  background: rgba(124, 165, 0, 0.15);
  border: 1px solid var(--color-success);
  color: #3c781e;
}

.alert--error {
  background: rgba(204, 0, 0, 0.08);
  border: 1px solid var(--color-error);
  color: var(--color-error);
}

.form-hint {
  margin: -0.5rem 0 1.25rem;
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.5;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
  flex: 1;
  min-width: 0;
}

.site-header__admin-link {
  margin-left: auto;
}

.admin-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  background: var(--color-bg);
  cursor: pointer;
  flex-shrink: 0;
}

.admin-nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-primary);
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}

.admin-nav-toggle[aria-expanded="true"] .admin-nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.admin-nav-toggle[aria-expanded="true"] .admin-nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.admin-nav-toggle[aria-expanded="true"] .admin-nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.admin-nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(0, 0, 0, 0.45);
}

.admin-nav-backdrop[hidden] {
  display: none;
}

.admin-nav-panel {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 160;
  width: min(280px, 88vw);
  height: 100%;
  background: var(--color-bg);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.admin-nav-panel[hidden] {
  display: none;
}

.admin-nav-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 3px solid var(--color-primary);
  background: var(--color-bg);
}

.admin-nav-panel__title {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text-strong);
}

.admin-nav-panel__close {
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
  font-size: 1.75rem;
  line-height: 1;
  color: var(--color-muted);
  cursor: pointer;
  border-radius: var(--radius);
}

.admin-nav-panel__close:hover {
  color: var(--color-text-strong);
  background: var(--color-bg-page);
}

.admin-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 1.25rem 1.5rem;
}

.admin-nav__link {
  color: var(--color-text);
  font-weight: 600;
  text-decoration: none;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  min-height: 44px;
  display: flex;
  align-items: center;
}

.admin-nav__link:hover {
  background: rgba(124, 165, 0, 0.12);
  color: var(--color-primary);
}

.admin-nav__link--active {
  background: rgba(124, 165, 0, 0.18);
  color: var(--color-primary);
}

.admin-nav__logout {
  margin-top: 0.75rem;
  width: 100%;
}

body.admin-nav-open {
  overflow: hidden;
}

.filter-toolbar {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border-light);
}

.card__intro {
  margin: -0.5rem 0 1rem;
  font-size: 0.95rem;
  color: var(--color-muted);
  line-height: 1.5;
}

.btn-group--loans-nav {
  margin-bottom: 0.25rem;
}

.filter-toolbar--devices {
  margin-top: 1.75rem;
}

.filter-toolbar--loans {
  margin-top: 1rem;
}

@media (min-width: 640px) {
  .filter-toolbar--devices {
    grid-template-columns: 1fr auto auto;
    align-items: end;
  }

  .filter-toolbar--loans {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
}

.install-homescreen {
  max-width: 400px;
  margin: 1.75rem auto 0;
  padding: 1.25rem 1.5rem;
  text-align: center;
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border-top: 3px solid var(--color-primary);
}

.install-homescreen__text {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: var(--color-muted);
  line-height: 1.5;
}

.install-homescreen .btn {
  width: 100%;
}

.filter-toolbar__meta {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
  grid-column: 1 / -1;
  order: 10;
}

.filter-toolbar__reset {
  align-self: end;
}

@media (min-width: 640px) {
  .admin-nav-toggle,
  .admin-nav-panel__head {
    display: none;
  }

  .admin-nav-backdrop {
    display: none !important;
  }

  .admin-nav-panel {
    position: static;
    display: flex !important;
    width: auto;
    height: auto;
    margin-left: auto;
    box-shadow: none;
    overflow: visible;
    flex-direction: row;
    align-items: center;
    flex-shrink: 0;
  }

  .admin-nav-panel[hidden] {
    display: flex !important;
  }

  .admin-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 0;
    justify-content: flex-end;
  }

  .admin-nav__link {
    padding: 0.35rem 0.5rem;
    min-height: auto;
  }

  .admin-nav__logout {
    margin-top: 0;
    width: auto;
  }
}

.table-wrap {
  overflow-x: auto;
  margin-top: 1rem;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table.data-table th,
table.data-table td {
  padding: 0.65rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

table.data-table th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  white-space: nowrap;
}

table.data-table tr:hover td {
  background: rgba(124, 165, 0, 0.06);
}

.data-table__note {
  max-width: 14rem;
  white-space: normal;
  word-break: break-word;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge--open {
  background: rgba(242, 102, 35, 0.15);
  color: var(--color-accent-hover);
  border: 1px solid var(--color-accent);
}

.badge--done {
  background: rgba(124, 165, 0, 0.2);
  color: #3c781e;
  border: 1px solid var(--color-success);
}

.badge--device-verfuegbar {
  background: rgba(124, 165, 0, 0.2);
  color: #3c781e;
  border: 1px solid var(--color-success);
}

.badge--device-ausgeliehen {
  background: rgba(242, 102, 35, 0.15);
  color: var(--color-accent-hover);
  border: 1px solid var(--color-accent);
}

.badge--device-defekt {
  background: rgba(204, 0, 0, 0.1);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.badge--device-nicht-verfuegbar {
  background: rgba(85, 85, 85, 0.12);
  color: var(--color-nav-dark);
  border: 1px solid var(--color-muted);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 100;
}

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

.modal {
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  max-width: 480px;
  width: 100%;
  padding: 1.5rem;
  max-height: 90vh;
  overflow-y: auto;
}

.modal h3 {
  margin: 0 0 1rem;
}

.empty-state {
  color: var(--color-muted);
  padding: 2rem 1rem;
  text-align: center;
}

body.dialog-open {
  overflow: hidden;
}

.dialog-root {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.dialog-root[hidden] {
  display: none;
}

.dialog-root__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.dialog-root .dialog {
  position: relative;
  z-index: 1;
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
  max-width: 420px;
  width: 100%;
  padding: 1.5rem;
  border-top: 4px solid var(--color-primary);
}

.dialog--confirm {
  border-top-color: var(--color-accent);
}

.dialog--error {
  border-top-color: var(--color-error);
}

.dialog__title {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
  color: var(--color-text-strong);
}

.dialog__message {
  margin: 0 0 1.25rem;
  line-height: 1.5;
  color: var(--color-text);
  white-space: pre-line;
}

.dialog__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: flex-end;
}

@media (min-width: 640px) {
  .hide-mobile {
    display: none;
  }
}

@media (max-width: 639px) {
  .site-header__logo {
    width: 48px;
    height: 48px;
  }

  .site-header__title {
    font-size: 1.2rem;
  }

  .site-header__inner {
    flex-wrap: nowrap;
    align-items: center;
  }

  .admin-nav-toggle {
    display: inline-flex;
  }

  .btn-group .btn {
    flex: 1 1 100%;
  }

  .btn-group--devices-row .btn {
    flex: 1 1 calc(50% - 0.375rem);
    font-size: 0.875rem;
    padding-left: 0.65rem;
    padding-right: 0.65rem;
  }

  .card {
    padding: 1rem;
  }

  .table-wrap {
    overflow-x: visible;
    margin-top: 0.75rem;
  }

  table.data-table--responsive {
    display: block;
  }

  table.data-table--responsive thead {
    display: none;
  }

  table.data-table--responsive tbody {
    display: block;
  }

  table.data-table--responsive tbody tr {
    display: block;
    margin-bottom: 1rem;
    padding: 0.25rem 0;
    background: var(--color-bg-page);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  table.data-table--responsive tbody tr:hover td {
    background: transparent;
  }

  table.data-table--responsive td {
    display: block;
    padding: 0.65rem 1rem;
    border-bottom: 1px solid var(--color-border-light);
    text-align: left;
    white-space: normal;
  }

  table.data-table--responsive td::before {
    content: attr(data-label);
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin-bottom: 0.25rem;
  }

  table.data-table--responsive td.hide-mobile {
    display: block;
  }

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

  table.data-table--responsive td.data-table__actions {
    padding-top: 0.85rem;
    background: rgba(124, 165, 0, 0.06);
    border-radius: 0 0 var(--radius) var(--radius);
  }

  table.data-table--responsive td.data-table__actions .btn {
    display: block;
    width: 100%;
    margin-bottom: 0.5rem;
    min-height: 44px;
    font-size: 1rem;
  }

  table.data-table--responsive td.data-table__actions .btn:last-child {
    margin-bottom: 0;
  }

  td.data-table__actions .btn--icon-desktop .btn__icon {
    display: none;
  }
}