/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-radius: var(--radius-md);
  font-size: .875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, box-shadow .15s;
  min-height: 40px;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.btn-primary:hover:not(:disabled) { background: var(--color-primary-dark); }

.btn-secondary {
  background: var(--color-surface-container);
  color: var(--color-on-surface);
}
.btn-secondary:hover:not(:disabled) { background: var(--color-surface-dim); }

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

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-full);
  background: none;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-on-surface-muted);
}
.btn-icon:hover { background: var(--color-surface-container); }

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-surface-container);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}

/* Chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: .8125rem;
  border: 1px solid var(--color-surface-container);
  background: var(--color-surface);
  cursor: pointer;
  transition: background .15s;
}
.chip.active {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}
.chip:hover { background: var(--color-surface-dim); }
.chip.active:hover { background: var(--color-primary-light); }

/* FAB */
.fab {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .15s;
}
.fab:hover { background: var(--color-primary-dark); }

/* List items */
.list-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-surface-container);
  cursor: pointer;
  transition: background .1s;
}
.list-item:hover { background: var(--color-surface-dim); }

.avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .875rem;
  font-weight: 600;
  flex-shrink: 0;
}

/* Form group */
.form-group {
  margin-bottom: var(--space-md);
}

/* Page container */
.page {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: var(--space-md);
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

/* Search */
.search-input {
  background: var(--color-surface-dim);
  border: none;
  border-radius: var(--radius-full);
  padding: var(--space-sm) var(--space-md);
}

/* Switch / toggle */
.switch {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}
.switch input[type="checkbox"] {
  width: 44px;
  height: 24px;
  appearance: none;
  background: var(--color-surface-container);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  transition: background .2s;
}
.switch input[type="checkbox"]::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: #fff;
  transition: transform .2s;
  box-shadow: var(--shadow-sm);
}
.switch input[type="checkbox"]:checked {
  background: var(--color-primary);
}
.switch input[type="checkbox"]:checked::after {
  transform: translateX(20px);
}

/* Segmented button group */
.seg-group {
  display: inline-flex;
  border: 1px solid var(--color-surface-container);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.seg-btn {
  padding: var(--space-xs) var(--space-md);
  border: none;
  background: var(--color-surface);
  cursor: pointer;
  font-size: .8125rem;
  border-right: 1px solid var(--color-surface-container);
  transition: background .15s;
}
.seg-btn:last-child { border-right: none; }
.seg-btn:hover { background: var(--color-surface-dim); }
.seg-btn.active { background: var(--color-primary-light); color: var(--color-primary-dark); font-weight: 600; }