/* =========================================================================
   components.css — 组件：按钮 / chip / 卡片 / 笔记 / 表单 / toast / 命令面板
   ========================================================================= */

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border-radius: var(--r-full);
  font-size: 0.9375rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.btn svg {
  width: 16px;
  height: 16px;
  transition: transform var(--dur) var(--ease);
}

.btn--primary {
  background: var(--accent);
  color: var(--fg-on-accent);
}

.btn--ghost {
  border: 1px solid var(--bd-strong);
  color: var(--fg-secondary);
}

.btn--sm {
  min-height: 38px;
  padding: 0 14px;
  font-size: 0.8125rem;
  gap: 6px;
}

.btn--sm svg {
  width: 14px;
  height: 14px;
}

.btn[disabled],
.btn[aria-busy="true"] {
  opacity: 0.65;
  cursor: not-allowed;
}

@media (hover: hover) {
  .btn--primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-2);
  }

  .btn--ghost:hover {
    border-color: var(--fg-primary);
    color: var(--fg-primary);
  }

  .btn:hover svg {
    transform: translate(2px, -2px);
  }
}

/* ---------- 筛选按钮 ---------- */
.filter {
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-full);
  color: var(--fg-muted);
  font-size: 0.8125rem;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.filter:hover {
  color: var(--fg-primary);
  border-color: var(--bd-strong);
}

.filter[aria-pressed="true"] {
  background: var(--fg-primary);
  border-color: var(--fg-primary);
  color: var(--bg-page);
}

/* ---------- 技能 chip ---------- */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 5px 12px;
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-full);
  background: var(--bg-surface);
  color: var(--fg-secondary);
  font-size: 0.875rem;
  line-height: 1.2;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

@media (hover: hover) {
  .chip:hover {
    border-color: var(--bd-strong);
    transform: translateY(-1px);
  }
}

.chip__dots {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  height: 9px;
}

.chip__dots i {
  width: 3px;
  height: 4px;
  border-radius: 1px;
  background: var(--bd-strong);
}

.chip__dots i:nth-child(2) {
  height: 6px;
}

.chip__dots i:nth-child(3) {
  height: 8px;
}

.chip__dots i.on {
  background: var(--accent);
}

/* ---------- 作品卡片 ---------- */
.card {
  position: relative;
  display: flex;
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-lg);
  background: var(--bg-surface);
  background-image: var(--surface-sheen);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.card__inner {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-width: 0;
}

.card__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--bd-subtle);
  background: var(--bg-subtle);
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  min-width: 0;
}

.card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.card__cat {
  color: var(--accent);
}

.card__arrow {
  color: var(--fg-muted);
  opacity: 0;
  transform: translate(-4px, 4px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.card__arrow svg {
  width: 14px;
  height: 14px;
}

.card__title {
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.card__link::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

.card__link:focus-visible {
  outline: none;
}

.card__link:focus-visible::after {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
  border-radius: var(--r-lg);
}

.card__desc {
  flex: 1;
  color: var(--fg-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 2px;
}

.tags li {
  padding: 2px 6px;
  border: 1px solid var(--bd-subtle);
  border-radius: 4px;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.01em;
}

@media (hover: hover) {
  .card:hover {
    transform: translateY(-3px);
    border-color: var(--bd-strong);
    box-shadow: var(--shadow-2);
  }

  .card:hover .card__media img {
    transform: scale(1.03);
  }

  .card:hover .card__arrow {
    opacity: 1;
    transform: none;
  }
}

/* 筛选后错峰入场：先关掉过渡回到起点，再打开过渡淡入 */
.card.is-entering {
  opacity: 0;
  transform: translateY(8px);
  transition: none;
}

.card.is-entered {
  opacity: 1;
  transform: none;
  transition: opacity 0.45s var(--ease-out), transform 0.45s var(--ease-out),
    border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

/* 主题按钮三态图标 */
.mode-icon {
  display: none;
}

[data-mode="auto"] .mode-icon--auto,
[data-mode="light"] .mode-icon--light,
[data-mode="dark"] .mode-icon--dark {
  display: block;
}

.lang .tool {
  width: auto;
  min-width: 54px;
  grid-auto-flow: column;
  gap: 5px;
  padding: 0 8px;
}

.lang__label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.menu__text {
  display: block;
  min-width: 0;
}

/* 表单双列（平板及以上） */
@media (min-width: 768px) {
  .form__row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 笔记列表 ---------- */
.note__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px var(--space-5);
  align-items: center;
  padding-block: var(--space-5);
  transition: padding-left var(--dur) var(--ease);
}

.note__main {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.note__date {
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
}

.note__title {
  font-family: var(--font-serif);
  font-size: 1.1875rem;
  letter-spacing: -0.01em;
  transition: color var(--dur) var(--ease);
}

.note__desc {
  color: var(--fg-muted);
  font-size: 0.875rem;
  line-height: 1.65;
}

.note__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  align-self: center;
  color: var(--fg-muted);
  font-size: 0.75rem;
  white-space: nowrap;
}

.note__meta svg {
  width: 14px;
  height: 14px;
  transition: transform var(--dur) var(--ease);
}

@media (max-width: 599px) {
  .note__link {
    grid-template-columns: minmax(0, 1fr);
  }

  .note__meta {
    align-self: start;
    margin-top: 4px;
  }
}

@media (hover: hover) {
  .note__link:hover {
    padding-left: 6px;
  }

  .note__link:hover .note__title {
    color: var(--accent);
  }

  .note__link:hover .note__meta svg {
    transform: translate(2px, -2px);
  }
}

/* ---------- 表单 ---------- */
.form {
  display: grid;
  gap: var(--space-5);
  padding: clamp(20px, 4vw, 32px);
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-lg);
  background: var(--bg-surface);
  background-image: var(--surface-sheen);
}

.form__head {
  display: grid;
  gap: 6px;
}

.form__title {
  font-size: var(--fs-h3);
}

.form__lead {
  color: var(--fg-muted);
  font-size: 0.875rem;
  line-height: 1.65;
}

.form__row {
  display: grid;
  gap: var(--space-4);
}

.field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.field__label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--fg-secondary);
}

.field__hint {
  display: block;
  margin-top: 2px;
  color: var(--fg-muted);
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.5;
}

.input {
  width: 100%;
  min-height: 46px;
  padding: 11px 13px;
  border: 1px solid var(--bd-strong);
  border-radius: var(--r-md);
  background: var(--bg-page);
  color: var(--fg-primary);
  /* 16px 起步，避免 iOS 聚焦时自动放大 */
  font-size: max(16px, 0.9375rem);
  line-height: 1.55;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

textarea.input {
  min-height: 132px;
  resize: vertical;
}

.input::placeholder {
  color: var(--fg-muted);
  opacity: 0.7;
}

.input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-weak);
}

.input[aria-invalid="true"] {
  border-color: var(--danger);
}

.input[aria-invalid="true"]:focus {
  box-shadow: 0 0 0 3px var(--danger-weak);
}

.field__err {
  display: none;
  color: var(--danger);
  font-size: 0.75rem;
  line-height: 1.5;
}

.field__err:not(:empty) {
  display: block;
}

.field__foot {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--fg-muted);
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
}

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

.form__status {
  color: var(--fg-muted);
  font-size: 0.75rem;
}

.form__success {
  display: grid;
  justify-items: start;
  gap: var(--space-3);
  padding: clamp(24px, 5vw, 40px);
  border: 1px solid var(--accent);
  border-radius: var(--r-lg);
  background: var(--accent-weak);
}

.form__success-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--fg-on-accent);
}

.form__success-icon svg {
  width: 20px;
  height: 20px;
}

.form__success h3 {
  font-size: var(--fs-h3);
}

.form__success p {
  color: var(--fg-secondary);
  font-size: 0.9375rem;
  max-width: 46ch;
}

/* ---------- FAQ ---------- */
.faq__item {
  border-bottom: 1px solid var(--bd-subtle);
}

.faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 16px 0;
  cursor: pointer;
  font-size: 0.9375rem;
  color: var(--fg-secondary);
  list-style: none;
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__item summary:hover {
  color: var(--fg-primary);
}

.faq__icon {
  flex: none;
  width: 16px;
  height: 16px;
  color: var(--fg-muted);
  transition: transform var(--dur) var(--ease);
}

.faq__item[open] .faq__icon {
  transform: rotate(45deg);
}

.faq__item p {
  padding: 0 0 18px;
  max-width: 70ch;
  color: var(--fg-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ---------- Toast ---------- */
.toast-region {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom));
  z-index: var(--z-toast);
  display: grid;
  gap: 8px;
  width: min(92vw, 420px);
  transform: translateX(-50%);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--bd-subtle);
  border-radius: 12px;
  background: var(--bg-raised);
  box-shadow: var(--shadow-3);
  color: var(--fg-secondary);
  font-size: 0.875rem;
  animation: toast-in 0.28s var(--ease-out) both;
}

.toast svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

.toast.is-leaving {
  animation: toast-out 0.22s var(--ease) both;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes toast-out {
  to {
    opacity: 0;
    transform: translateY(6px);
  }
}

/* ---------- 命令面板 ---------- */
.cmdk {
  position: fixed;
  inset: 0;
  z-index: var(--z-cmdk);
  display: grid;
  place-items: start center;
  padding: clamp(56px, 12vh, 120px) var(--gutter) var(--gutter);
}

.cmdk__scrim {
  position: absolute;
  inset: 0;
  background: rgba(10, 12, 14, 0.44);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  border: 0;
  cursor: default;
}

.cmdk__panel {
  position: relative;
  width: min(100%, 560px);
  overflow: hidden;
  border: 1px solid var(--bd-subtle);
  border-radius: 18px;
  background: var(--bg-raised);
  box-shadow: var(--shadow-3);
  animation: cmdk-in 0.2s var(--ease-out) both;
}

@keyframes cmdk-in {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.99);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.cmdk__search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--bd-subtle);
}

.cmdk__search svg {
  width: 17px;
  height: 17px;
  color: var(--fg-muted);
}

.cmdk__input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: none;
  font-size: max(16px, 0.9375rem);
  outline: none;
}

.cmdk__input::placeholder {
  color: var(--fg-muted);
}

.cmdk__esc {
  padding: 2px 6px;
  border: 1px solid var(--bd-subtle);
  border-radius: 5px;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
}

.cmdk__list {
  max-height: min(52vh, 420px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 8px;
}

.cmdk__group {
  padding: 6px 0;
}

.cmdk__group-label {
  padding: 6px 10px;
  color: var(--fg-muted);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.cmdk__option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  color: var(--fg-secondary);
  font-size: 0.875rem;
  cursor: pointer;
}

.cmdk__option svg {
  width: 15px;
  height: 15px;
  color: var(--fg-muted);
}

.cmdk__option[aria-selected="true"] {
  background: var(--accent-weak);
  color: var(--fg-primary);
}

.cmdk__option[aria-selected="true"] svg {
  color: var(--accent);
}

.cmdk__option-key {
  margin-left: auto;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
}

.cmdk__empty {
  padding: 28px 12px;
  text-align: center;
  color: var(--fg-muted);
  font-size: 0.875rem;
}

.cmdk__hint {
  padding: 10px 16px;
  border-top: 1px solid var(--bd-subtle);
  color: var(--fg-muted);
  font-size: 0.6875rem;
}