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

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-family: var(--font-family-ui);
  font-size: 16px;
  line-height: 1.45;
}

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

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--header-height);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  box-shadow: var(--shadow);
}

.app-header__brand {
  display: flex;
  align-items: center;
  min-height: var(--touch);
}

.app-header__logo {
  display: block;
  height: 36px;
  width: auto;
  max-width: 220px;
}

.app-header__menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--touch);
  height: var(--touch);
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius);
  background: var(--color-primary-hover);
  color: var(--color-text-on-primary);
  cursor: pointer;
}

.app-header__menu-btn:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.app-header__menu-btn .burger,
.app-header__menu-btn .burger::before,
.app-header__menu-btn .burger::after {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  position: relative;
}

.app-header__menu-btn .burger::before,
.app-header__menu-btn .burger::after {
  content: '';
  position: absolute;
  left: 0;
}

.app-header__menu-btn .burger::before {
  top: -6px;
}

.app-header__menu-btn .burger::after {
  top: 6px;
}

.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(26, 26, 26, 0.45);
  border: 0;
  padding: 0;
  cursor: pointer;
}

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

.nav-panel {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 60;
  display: flex;
  flex-direction: column;
  width: min(100%, var(--panel-width));
  height: 100%;
  background: var(--color-background);
  color: var(--color-text-primary);
  box-shadow: -4px 0 16px rgba(26, 26, 26, 0.12);
}

.nav-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.nav-panel__title {
  margin: 0;
  font-size: 1.05rem;
}

.nav-panel__close {
  min-width: var(--touch);
  min-height: var(--touch);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 1.25rem;
}

.nav-panel__body {
  flex: 1;
  overflow: auto;
  padding: var(--space-4);
}

.nav-panel__group {
  margin: 0 0 var(--space-5);
  padding: 0;
  border: 0;
}

.nav-panel__group legend {
  padding: 0;
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-panel__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-panel__list a {
  display: flex;
  align-items: center;
  min-height: var(--touch);
  padding: 0 var(--space-3);
  border-radius: var(--radius);
  color: var(--color-text-primary);
  text-decoration: none;
}

.nav-panel__list a:hover {
  background: var(--color-surface);
}

.nav-panel__list a.is-active {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
}

.nav-panel__foot {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.app-main {
  padding: var(--space-5);
  max-width: 1100px;
  margin: 0 auto;
}

.page-title {
  margin: 0 0 var(--space-4);
  font-size: 1.5rem;
  font-weight: 700;
}

.panel {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
}

.panel h2,
.panel h3 {
  margin-top: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--touch);
  padding: 0 var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  font-family: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
}

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

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

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

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

.btn--ghost {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

label,
.field-label {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

input,
select,
textarea {
  width: 100%;
  min-height: var(--touch);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-background);
  font-family: inherit;
  font-size: 1rem;
}

textarea {
  min-height: 88px;
  resize: vertical;
}

fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin: 0 0 var(--space-4);
  padding: var(--space-4);
}

legend {
  padding: 0 var(--space-2);
  font-weight: 700;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-background);
}

th,
td {
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--color-surface);
  font-weight: 700;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-secondary-2);
  color: var(--color-text-primary);
  font-size: 0.8rem;
}

.badge--draft {
  background: var(--color-secondary-1);
}

.badge--error {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.muted {
  color: var(--color-text-muted);
}

.hidden {
  display: none !important;
}

.fallback-banner {
  position: sticky;
  top: var(--header-height);
  z-index: 30;
  padding: var(--space-3) var(--space-4);
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border-bottom: 1px solid var(--color-danger);
}

.field-error {
  color: var(--color-danger);
  font-size: 0.85rem;
  margin-top: var(--space-1);
}

.hint {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

@media (min-width: 768px) {
  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }

  .form-grid .span-2 {
    grid-column: span 2;
  }
}