:root {
  --primary: #16a34a;
  --primary-dark: #15803d;
  --bg: #f3f4f6;
  --card-bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --danger: #dc2626;
  --border: #e5e7eb;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

.app-header {
  background: var(--primary);
  color: #fff;
  padding: env(safe-area-inset-top, 0) 1rem 1rem;
  padding-top: calc(env(safe-area-inset-top, 0) + 1rem);
  position: sticky;
  top: 0;
  z-index: 10;
}

.app-header h1 {
  margin: 0;
  font-size: 1.4rem;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.85rem;
}

.header-nav a,
.link-btn {
  color: #fff;
  text-decoration: none;
  opacity: 0.9;
}

.link-btn {
  background: none;
  border: none;
  width: auto;
  margin: 0;
  padding: 0;
  font-size: 0.85rem;
  font-weight: 400;
  cursor: pointer;
}

.header-nav a:active,
.link-btn:active {
  opacity: 0.7;
  background: none;
}

#username-label {
  opacity: 0.85;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 1rem 1rem calc(env(safe-area-inset-bottom, 0) + 2rem);
}

.card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  margin-bottom: 1rem;
}

.field-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.field {
  flex: 1 1 200px;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

label {
  font-size: 0.85rem;
  color: var(--muted);
}

input,
select {
  font-size: 1rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  width: 100%;
}

input:focus,
select:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

button {
  margin-top: 0.9rem;
  width: 100%;
  padding: 0.8rem;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:active {
  background: var(--primary-dark);
}

.field-checkbox {
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
}

.field-checkbox label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
  font-size: 0.95rem;
}

.field-checkbox input[type="checkbox"] {
  width: auto;
}

.search-row {
  margin-bottom: 1rem;
}

.filter-row {
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.filter-row select {
  width: auto;
  padding: 0.5rem 0.7rem;
  font-size: 0.85rem;
}

.filter-row label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: inherit;
}

.btn-row {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.btn-row button {
  margin-top: 0;
}

.btn-secondary {
  background: var(--card-bg);
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-secondary:active {
  background: var(--bg);
}

.search-row input {
  border-radius: 999px;
  padding: 0.7rem 1.1rem;
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.item {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.item-text {
  min-width: 0;
}

.item-short {
  font-weight: 700;
  color: var(--primary);
  text-transform: lowercase;
}

.item-long {
  color: var(--text);
  word-break: break-word;
}

.item-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.4rem;
}

.badge {
  display: inline-block;
  background: var(--bg);
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  text-transform: none;
}

.badge-private {
  background: #fee2e2;
  color: var(--danger);
}

.badge-owner {
  background: #dcfce7;
  color: var(--primary-dark);
}

.badge-pending {
  background: #fef3c7;
  color: #92400e;
}

.badge-conflict {
  background: #fee2e2;
  color: var(--danger);
  cursor: help;
}

.badge-offline {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.item-actions {
  display: flex;
  gap: 0.4rem;
  flex-shrink: 0;
}

.icon-btn {
  width: 2.4rem;
  height: 2.4rem;
  margin: 0;
  padding: 0;
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 1.1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.icon-btn:active {
  background: var(--border);
}

.hint {
  text-align: center;
  color: var(--muted);
  margin-top: 2rem;
}

.error-text {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 0.7rem 0 0;
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}

.admin-list {
  margin-top: 0.75rem;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 0) + 1.2rem);
  transform: translateX(-50%);
  background: #111827;
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  z-index: 20;
}

@media (min-width: 640px) {
  .app-header h1 { font-size: 1.6rem; }
}