:root {
  --bg: #f4f5f7;
  --card-bg: #ffffff;
  --text: #1c1e21;
  --muted: #6b7280;
  --border: #e2e4e8;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --error: #b91c1c;
  --success: #15803d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.view { min-height: 100vh; }

.card {
  max-width: 420px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

#view-login .card {
  padding-top: 15vh;
}

h1 {
  font-size: 1.4rem;
  margin: 0 0 20px;
  text-align: center;
}

.tabs {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 20px;
}

.tab {
  flex: 1;
  padding: 10px;
  border: none;
  background: var(--card-bg);
  color: var(--muted);
  font-size: 0.95rem;
  cursor: pointer;
}

.tab.active {
  background: var(--accent);
  color: var(--accent-text);
}

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

label {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 10px;
}

input {
  padding: 12px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--text);
  width: 100%;
}

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

button[type="submit"] {
  margin-top: 20px;
  padding: 13px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}

button[type="submit"]:active {
  opacity: 0.85;
}

.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.95rem;
  cursor: pointer;
  padding: 4px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}

.topbar h1 {
  margin: 0;
  font-size: 1.1rem;
}

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

.info-list {
  margin: 0 0 16px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
}

.info-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 0;
  font-size: 0.88rem;
}

.info-row dt {
  color: var(--muted);
}

.info-row dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
}

.error {
  color: var(--error);
  font-size: 0.9rem;
  margin: 8px 0 0;
}

.status {
  font-size: 0.9rem;
  margin: 8px 0 0;
}

.status.success { color: var(--success); }
.status.error { color: var(--error); }

.admin-link {
  display: block;
  margin-top: 24px;
  text-align: center;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.95rem;
}

.advanced-section {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.advanced-toggle {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 4px 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
}

#advanced-devices {
  margin-top: 12px;
}

.secondary-btn {
  width: 100%;
  padding: 11px;
  margin-bottom: 16px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--accent);
  cursor: pointer;
}

.add-form {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 16px;
}

.add-form input {
  padding: 9px;
  font-size: 0.9rem;
}

.add-form label {
  margin-top: 8px;
  font-size: 0.8rem;
}

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

.item {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 10px;
  padding: 12px;
}

.item-summary {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.item-title {
  font-weight: 600;
}

.item-sub {
  font-size: 0.85rem;
  color: var(--muted);
}

.accordion-toggle {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
  width: 100%;
  border: none;
  background: none;
  padding: 0;
  margin: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

.accordion-arrow {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.8rem;
}

.item-summary-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.device-form {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.device-form input {
  padding: 9px;
  font-size: 0.9rem;
}

.device-form label {
  margin-top: 8px;
  font-size: 0.8rem;
}

.item-actions {
  display: flex;
  gap: 16px;
  margin-top: 6px;
}

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

.item-edit-form {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.item-edit-form input {
  padding: 9px;
  font-size: 0.9rem;
}

.item-edit-form label {
  margin-top: 8px;
  font-size: 0.8rem;
}

.item-edit-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 12px;
}

.item-edit-actions button[type="submit"] {
  margin-top: 0;
  padding: 9px 16px;
  flex: 0 0 auto;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text);
  margin-top: 10px;
}

.checkbox-label input {
  width: auto;
}

.option-list-wrap {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.option-list {
  list-style: none;
  margin: 6px 0 10px;
  padding: 0;
}

.option-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 0.88rem;
}

.option-add-form {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.option-add-form input {
  padding: 8px;
  font-size: 0.85rem;
  width: auto;
  flex: 1 1 100px;
}

.secondary-btn.small {
  width: auto;
  margin: 0;
  padding: 8px 12px;
  font-size: 0.85rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --card-bg: #1e2126;
    --text: #e8e9ec;
    --muted: #9aa0a8;
    --border: #33373d;
    --accent: #3b82f6;
  }
}