/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  height: var(--topbar-height);
  padding: 0 var(--spacing-lg);
  background: var(--color-surface);
  border-bottom: 0.1rem solid var(--color-border);
  flex-shrink: 0;
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.topbar__logo {
  display: flex;
  color: var(--color-text);
}

.topbar__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.topbar__search {
  flex: 1;
  max-width: 56rem;
  margin: 0 auto;
}

.topbar__cta {
  flex-shrink: 0;
  white-space: nowrap;
}

/* Search */
.search {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-search-bg);
  border: 0.1rem solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0 1.6rem;
  height: 4.2rem;
}

.search__icon {
  display: flex;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.search__input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: var(--font-size-base);
  color: var(--color-text);
  min-width: 0;
}

.search__input::placeholder {
  color: var(--color-text-faint);
}

.search__input:focus {
  outline: none;
}

/* Sidebar */
.sidebar__profile {
  padding: 0 var(--spacing-md) var(--spacing-md);
}

.sidebar__avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.6rem;
  height: 3.6rem;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-primary-text);
  font-weight: 700;
  font-size: var(--font-size-md);
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0 var(--spacing-sm);
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  width: 100%;
  padding: 1rem 1.2rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: left;
  transition: background var(--transition), color var(--transition);
  position: relative;
}

.sidebar__link:hover:not(:disabled) {
  background: var(--color-sidebar-active);
  color: var(--color-text);
}

.sidebar__link--active {
  background: var(--color-sidebar-active);
  color: var(--color-text);
  font-weight: 600;
}

.sidebar__link--active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0.3rem;
  height: 60%;
  background: var(--color-sidebar-indicator);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.sidebar__link--disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.sidebar__icon {
  display: flex;
  flex-shrink: 0;
  width: 1.8rem;
  justify-content: center;
}

.sidebar__divider {
  height: 0.1rem;
  background: var(--color-border);
  margin: var(--spacing-sm) var(--spacing-md);
}

.sidebar__link--config {
  margin: 0 var(--spacing-sm);
}

.sidebar__tags {
  padding: var(--spacing-md) var(--spacing-sm) 0;
  flex: 1;
}

.sidebar__tags-heading {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1rem 1.2rem;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-muted);
}

.sidebar__tag-list {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0 var(--spacing-sm);
}

.sidebar__tag-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  padding: 0.8rem 1.2rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  text-align: left;
  transition: background var(--transition), color var(--transition);
}

.sidebar__tag-item:hover {
  background: var(--color-sidebar-active);
  color: var(--color-text);
}

.sidebar__tag-item--active {
  background: var(--color-sidebar-active);
  color: var(--color-text);
  font-weight: 600;
}

.sidebar__tag-dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.sidebar__tag-empty {
  padding: 0.8rem 1.2rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-faint);
  font-style: italic;
}

.sidebar__footer {
  margin-top: auto;
  padding: var(--spacing-md) var(--spacing-sm) 0;
}

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 1rem 1.8rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.button:active {
  transform: scale(0.98);
}

.button--primary {
  background: var(--color-primary);
  color: var(--color-primary-text);
}

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

.button__plus {
  font-size: 1.8rem;
  line-height: 1;
  font-weight: 400;
}

.button--secondary {
  background: var(--color-tag-bg);
  color: var(--color-text);
  border: 0.1rem solid var(--color-border);
}

.button--secondary:hover {
  background: var(--color-sidebar-active);
}

.button--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 0.1rem solid var(--color-border);
}

.button--ghost:hover {
  background: var(--color-sidebar-active);
  color: var(--color-text);
}

.button--danger {
  background: var(--color-danger);
  color: #ffffff;
}

.button--danger:hover {
  background: #b91c1c;
}

/* Tags */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.9rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
}

.tag--removable {
  padding-right: 0.4rem;
}

.tag__remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: var(--radius-full);
  font-size: 1.4rem;
  line-height: 1;
  opacity: 0.7;
  transition: opacity var(--transition), background var(--transition);
}

.tag__remove:hover {
  opacity: 1;
  background: rgba(0, 0, 0, 0.08);
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
  min-height: 2.4rem;
}

/* Note card */
.card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 0.1rem solid var(--color-border-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition), box-shadow var(--transition);
  min-height: 20rem;
}

.card:hover {
  border-color: var(--color-text-faint);
}

.card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-sm);
  margin-bottom: 0.6rem;
}

.card__title {
  font-size: var(--font-size-md);
  font-weight: 700;
  line-height: 1.35;
  word-break: break-word;
  flex: 1;
}

.card__favorite {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.8rem;
  height: 2.8rem;
  color: var(--color-star-empty);
  transition: color var(--transition), transform var(--transition);
}

.card__favorite:hover {
  color: var(--color-star);
  transform: scale(1.08);
}

.card__favorite--active {
  color: var(--color-star);
}

.card__favorite svg {
  width: 1.8rem;
  height: 1.8rem;
}

.card__date {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--spacing-sm);
}

.card__body {
  flex: 1;
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.55;
  word-break: break-word;
  white-space: pre-wrap;
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--spacing-sm);
  margin-top: auto;
  padding-top: var(--spacing-sm);
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  flex: 1;
}

.card__actions {
  display: flex;
  gap: 1.2rem;
  flex-shrink: 0;
}

.card__action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.card__action-btn:hover {
  color: var(--color-text);
}

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

.card__action-icon {
  display: flex;
}

/* Form */
.form__group {
  margin-bottom: var(--spacing-md);
}

.form__group--checkbox {
  margin-bottom: var(--spacing-md);
}

.form__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.form__checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-base);
  cursor: pointer;
}

.form__checkbox input {
  width: 1.6rem;
  height: 1.6rem;
  accent-color: var(--color-primary);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 1rem 1.2rem;
  border: 0.1rem solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-search-bg);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form__textarea {
  min-height: 14rem;
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-text-faint);
}

.form__input--error,
.form__textarea--error {
  border-color: var(--color-danger);
}

.form__error {
  display: block;
  min-height: 1.8rem;
  margin-top: 0.4rem;
  font-size: var(--font-size-sm);
  color: var(--color-danger);
}

.form__fieldset {
  margin-bottom: var(--spacing-md);
}

.form__legend {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.form__tag-row {
  display: flex;
  gap: var(--spacing-xs);
}

.form__input--tag {
  flex: 1;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.modal[hidden] {
  display: none;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(0.3rem);
}

[data-theme="dark"] .modal__backdrop {
  background: rgba(0, 0, 0, 0.65);
}

.modal__dialog {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 52rem;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--color-surface-elevated);
  border: 0.1rem solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  padding: var(--spacing-lg);
  animation: modal-in 0.25s ease;
}

.modal__dialog--small {
  max-width: 40rem;
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.modal__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.modal__close {
  width: 3.2rem;
  height: 3.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  line-height: 1;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

.modal__close:hover {
  background: var(--color-sidebar-active);
  color: var(--color-text);
}

.modal__message {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.modal__preview {
  font-weight: 600;
  padding: var(--spacing-sm);
  background: var(--color-danger-bg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  word-break: break-word;
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 0.1rem solid var(--color-border);
}

/* Toast */
.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%) translateY(2rem);
  z-index: 200;
  padding: 1.2rem 2rem;
  background: var(--color-primary);
  color: var(--color-primary-text);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  box-shadow: var(--shadow-modal);
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition);
  pointer-events: none;
  max-width: calc(100% - 3.2rem);
  text-align: center;
}

.toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast--success {
  background: var(--color-success);
  color: #ffffff;
}

.toast--error {
  background: var(--color-danger);
  color: #ffffff;
}

@media (max-width: 768px) {
  .topbar {
    flex-wrap: wrap;
    height: auto;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
  }

  .topbar__search {
    order: 3;
    width: 100%;
    max-width: none;
    margin: 0;
  }

  .topbar__cta {
    margin-left: auto;
  }
}