.page-shell {
  display: grid;
  gap: var(--space-5);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--space-3);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.12);
}

.card.static:hover {
  transform: none;
  border-color: var(--border-subtle);
}

.stack {
  display: grid;
  gap: var(--space-2);
}

.row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.row.spread {
  justify-content: space-between;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

button,
.button,
input,
select,
textarea {
  font: inherit;
}

button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  border-radius: var(--radius-input);
  padding: 14px 18px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
  transition: filter var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

button:disabled,
.button:disabled,
.button[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
  cursor: not-allowed;
}

.primary-btn {
  background: var(--accent-primary);
  color: #ffffff;
  border: none;
}

.primary-btn:hover {
  filter: brightness(1.05);
}

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

.secondary-btn:hover {
  border-color: #5ec5c0;
  color: #5ec5c0;
}

.ghost-btn,
.ghost-link {
  background: transparent;
  border-color: var(--border-subtle);
  color: var(--text-secondary);
}

.ghost-btn:hover,
.ghost-link:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.12);
}

.ghost-link {
  text-decoration: none;
}

@media (max-width: 639px) {
  .page-shell {
    gap: var(--space-3);
  }

  .card {
    padding: var(--space-2);
  }

  button,
  .button {
    padding: 12px 16px;
  }
}

.pill,
.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.mode-controls {
  gap: 10px;
}

.mode-label {
  color: var(--text-secondary);
  font-size: var(--font-size-small);
}

.mode-controls select {
  width: auto;
  min-width: 96px;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
}

.tag.muted {
  background: rgba(75, 107, 133, 0.25);
  color: #a7b5c1;
}

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

.error {
  color: #d7b7a0;
  font-size: var(--font-size-small);
}

.success {
  color: #9ed0c0;
  font-size: var(--font-size-small);
}

.label {
  display: grid;
  gap: var(--space-1);
  color: var(--text-secondary);
  font-size: var(--font-size-small);
}

input,
select,
textarea {
  width: 100%;
  border-radius: var(--radius-input);
  border: 1px solid var(--border-subtle);
  padding: 12px 14px;
  background: rgba(14, 20, 27, 0.65);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

input::placeholder,
select::placeholder,
textarea::placeholder {
  color: var(--text-secondary);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent-primary);
}

.list {
  display: grid;
  gap: var(--space-2);
}

.list-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: var(--space-3);
}

.tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  width: 100%;
}

.tab-btn {
  display: flex;
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  padding: 10px 14px;
  width: 100%;
  min-width: 0;
  justify-content: center;
}

.tab-btn.active {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.tab-btn:not(.active):hover {
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.back-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-small);
}

.back-link:hover {
  color: var(--text-primary);
}

.auth-form {
  display: none;
  width: 100%;
  justify-items: stretch;
  align-content: start;
}

.auth-form.is-active {
  display: grid;
}

.auth-form[hidden] {
  display: none !important;
}

.auth-form-frame {
  min-height: 420px;
  width: 100%;
  display: grid;
  align-items: start;
}

.auth-form > * {
  width: 100%;
}

.auth-inline-link {
  width: auto;
  justify-self: start;
}

@media (max-width: 639px) {
  .split {
    grid-template-columns: 1fr;
  }

  button,
  .button {
    width: 100%;
  }

  .row {
    flex-wrap: wrap;
  }
}