/* ============================================================
 * 鬼灭の刃全息图鉴库 · components.css
 * 卡片 / 证据徽章 / 按钮 / 详情 / 关联 / 首页 / 搜索 /
 * 状态 / 之树 / 测验 / 帧播放 / 导出 / 404 / 提示条
 * 主题色唯一入口：var(--km-theme, var(--brand))，禁硬编码呼吸法色
 * ============================================================ */

/* ---------- 卡片（速览层） ---------- */

.km-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--ink-faint);
  border-top: 4px solid var(--km-theme, var(--brand));
  border-radius: var(--km-radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.km-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.55);
}

.km-card:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.km-card--sm .km-card__title {
  font-size: 14px;
}

.km-card--sm .km-card__summary {
  display: none;
}

.km-card__media {
  aspect-ratio: 3 / 4;
  background: var(--surface-alt);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.km-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.km-card__media .km-placeholder,
.km-card__media .km-frames {
  width: 100%;
  height: 100%;
}

.km-card__body {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.km-card__title {
  font-size: 16px;
  font-weight: 700;
}

.km-card__ja {
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

.km-card__summary {
  font-size: 13px;
  color: var(--ink-soft);
}

.km-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.km-tag {
  font-size: 11px;
  line-height: 1.6;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--ink-soft);
  border: 1px solid var(--ink-faint);
}

.km-card__evidence {
  margin-top: auto;
  padding-top: 4px;
}

/* ---------- 证据徽章 ---------- */

.km-evidence {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  line-height: 1.6;
  padding: 1px 8px;
  border-radius: 4px;
  border: 1px solid var(--ink-faint);
  color: var(--ink-soft);
  background: var(--surface-alt);
  white-space: nowrap;
}

.km-evidence--official {
  border-color: var(--deep-text);
  color: var(--deep-text);
}

.km-evidence--original {
  border-color: var(--accent);
  color: var(--accent);
}

.km-evidence--anime {
  border-color: var(--brand);
  color: var(--brand);
}

.km-evidence--interview {
  border-color: var(--accent-2);
  color: var(--ink-soft);
}

.km-evidence--community {
  border-color: var(--ink-faint);
  color: var(--ink-faint);
}

.km-evidence.is-unverified {
  border-style: dashed;
}

/* ---------- 占位卡 ---------- */

.km-placeholder {
  display: block;
  width: 100%;
  height: auto;
}

.km-placeholder__glyph {
  font-weight: 700;
  letter-spacing: 0.12em;
}

.km-placeholder__mark {
  letter-spacing: 0.08em;
}

/* ---------- 按钮 ---------- */

.km-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 8px 16px;
  border-radius: var(--km-radius);
  border: 1px solid var(--ink-faint);
  background: var(--surface);
  color: var(--ink);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
}

.km-btn--primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #0B1017;
  font-weight: 700;
}

.km-btn--ghost {
  background: transparent;
  border-color: var(--ink-faint);
  color: var(--ink-soft);
}

.km-btn:hover {
  filter: brightness(0.96);
}

.km-btn:disabled {
  opacity: 0.6;
  cursor: default;
}

/* ---------- 详情页（详解层） ---------- */

.km-detail {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.km-detail__hero {
  display: grid;
  gap: 16px;
}

.km-detail__media {
  border: 1px solid var(--ink-faint);
  border-radius: var(--km-radius);
  overflow: hidden;
  background: var(--surface);
}

.km-detail__media > img,
.km-detail__media > .km-placeholder,
.km-detail__media > .km-frames {
  width: 100%;
  height: auto;
  display: block;
}

.km-detail__head {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.km-detail__name {
  font-size: 26px;
  font-weight: 700;
}

.km-detail__names {
  font-size: 14px;
  color: var(--ink-faint);
  letter-spacing: 0.03em;
}

.km-detail__summary {
  font-size: 15px;
  color: var(--ink-soft);
}

.km-detail__evidence {
  font-size: 12px;
  color: var(--ink-faint);
}

.km-detail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
  align-items: center;
}

.km-detail__actions select {
  min-height: 44px;
  padding: 8px 10px;
  border: 1px solid var(--ink-faint);
  border-radius: var(--km-radius);
  background: var(--surface);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
}

.km-detail__actions select:focus {
  border-color: var(--brand);
  outline: none;
}

.km-detail__section {
  border-top: 2px solid var(--ink);
  padding-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.km-detail__fields {
  display: grid;
  gap: 8px;
}

.km-field {
  display: flex;
  gap: 10px;
  border-bottom: 1px dotted var(--ink-faint);
  padding-bottom: 6px;
}

.km-field__label {
  flex: 0 0 76px;
  color: var(--ink-faint);
  font-size: 13px;
}

.km-field__value {
  font-size: 14px;
  color: var(--ink);
  word-break: break-word;
}

.km-detail__gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
}

.km-detail__gallery img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--ink-faint);
  border-radius: 6px;
}

/* ---------- 关联层 ---------- */

.km-detail__related {
  border-top: 2px solid var(--ink);
  padding-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.km-related-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.km-chip {
  display: inline-block;
  padding: 4px 12px;
  margin: 0 6px 6px 0;
  border-radius: 999px;
  border: 1px solid var(--km-theme, var(--brand));
  color: var(--ink);
  text-decoration: none;
  font-size: 13px;
  background: var(--surface);
}

.km-chip:hover {
  background: var(--surface-alt);
}

/* ---------- 首页 ---------- */

.km-home {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.km-home__domains {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--km-gap);
}

.km-domain-tile {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px;
  border: 1px solid var(--ink-faint);
  border-left: 4px solid var(--km-theme, var(--brand));
  border-radius: var(--km-radius);
  background: var(--surface);
  text-decoration: none;
  color: var(--ink);
}

.km-domain-tile:hover {
  background: var(--surface-alt);
}

.km-domain-tile > span:first-child {
  font-size: 15px;
  font-weight: 700;
}

.km-domain-tile > span:last-child {
  font-size: 12px;
  color: var(--ink-faint);
}

.km-home__featured {
  display: flex;
  flex-direction: column;
}

/* ---------- 搜索 ---------- */

.km-search {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.km-search__input {
  width: 100%;
  padding: 12px;
  font-size: 16px;
  font-family: inherit;
  border: 2px solid var(--ink-faint);
  border-radius: var(--km-radius);
  background: var(--surface);
  color: var(--ink);
}

.km-search__input:focus {
  border-color: var(--brand);
  outline: none;
}

.km-search__meta {
  font-size: 13px;
  color: var(--ink-faint);
}

.km-search__results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--km-gap);
}

mark.km-hit {
  background: var(--accent-2);
  color: #12161F;
  padding: 0 2px;
  border-radius: 2px;
}

/* ---------- 建库状态 ---------- */

.km-status {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.km-status__row {
  display: grid;
  grid-template-columns: 84px 1fr auto;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.km-status__row > span:first-child {
  color: var(--ink-soft);
}

.km-status__row > span:last-child {
  color: var(--ink-faint);
  font-size: 13px;
  white-space: nowrap;
}

.km-meter {
  height: 12px;
  background: var(--surface-alt);
  border: 1px solid var(--ink-faint);
  border-radius: 999px;
  overflow: hidden;
}

.km-meter__fill {
  height: 100%;
  background: var(--km-theme, var(--brand));
}

/* ---------- 呼吸法之树 ---------- */

.km-tree {
  position: relative;
  overflow-x: auto;
}

.km-tree__svg {
  width: 100%;
  height: auto;
  display: block;
  min-width: 640px;
}

.km-tree__node {
  cursor: pointer;
}

.km-tree__node rect {
  stroke-width: 2;
}

.km-tree__node text {
  font-size: 14px;
  fill: var(--ink);
}

.km-tree__node:hover rect {
  filter: brightness(0.95);
}

.km-tree__edge {
  stroke: var(--ink-faint);
  stroke-width: 2;
  fill: none;
  cursor: pointer;
}

.km-tree__edge:hover {
  stroke: var(--brand);
}

.km-tree__edge--unverified {
  stroke-dasharray: 6 5;
}

.km-tree__edge-hit {
  stroke: transparent;
  stroke-width: 14;
  fill: none;
  cursor: pointer;
}

.km-tree > p {
  font-size: 12px;
  color: var(--ink-faint);
  margin-top: 8px;
}

/* ---------- 每日一问 ---------- */

.km-quiz {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.km-quiz__progress {
  font-size: 13px;
  color: var(--ink-faint);
}

.km-quiz h2 {
  font-size: 18px;
  font-weight: 700;
}

.km-quiz__choices {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.km-choice {
  min-height: 44px;
  padding: 12px 14px;
  text-align: left;
  border: 1px solid var(--ink-faint);
  border-radius: var(--km-radius);
  background: var(--surface);
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  cursor: pointer;
}

.km-choice:hover:not(:disabled) {
  border-color: var(--brand);
  background: var(--surface-alt);
}

.km-choice.is-correct {
  border-color: var(--brand);
  border-width: 2px;
  background: rgba(79, 176, 224, 0.18);
  font-weight: 700;
}

.km-choice.is-wrong {
  border-color: var(--accent);
  background: rgba(255, 122, 51, 0.16);
}

.km-choice:disabled {
  cursor: default;
}

.km-quiz__hint {
  font-size: 13px;
  color: var(--accent-3);
  border-left: 3px solid var(--accent-3);
  padding-left: 10px;
}

.km-quiz__explain {
  font-size: 14px;
  color: var(--ink-soft);
  border-left: 3px solid var(--brand);
  padding-left: 10px;
}

/* ---------- 帧播放 / 对照卡 ---------- */

.km-frames {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.km-frames__pane {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--ink-faint);
  border-radius: var(--km-radius);
  overflow: hidden;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.km-frames__pane img {
  width: 100%;
  height: auto;
  display: block;
}

.km-frames__pane-label {
  position: absolute;
  left: 8px;
  top: 8px;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--deep);
  color: var(--ink);
  border: 1px solid var(--deep-2);
  z-index: 2;
}

.km-frames__divider {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  z-index: 3;
  cursor: ew-resize;
}

.km-frames__controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.km-frames__btn {
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--ink-faint);
  background: var(--surface);
  border-radius: var(--km-radius);
  cursor: pointer;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  padding: 6px 12px;
}

.km-frames__btn:hover {
  background: var(--surface-alt);
}

.km-frames__counter {
  font-size: 13px;
  color: var(--ink-faint);
  margin-left: auto;
}

/* ---------- 导出 ---------- */

.km-export {
  margin-top: 12px;
  border: 1px dashed var(--ink-faint);
  border-radius: var(--km-radius);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.km-export__preview {
  max-width: 300px;
}

.km-export__preview svg {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--ink-faint);
  border-radius: 6px;
}

.km-export__opts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.km-export__opts input[type="text"] {
  flex: 1 1 220px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--ink-faint);
  border-radius: var(--km-radius);
  font-family: inherit;
  font-size: 14px;
  background: var(--surface);
  color: var(--ink);
}

.km-export__opts input[type="text"]:focus {
  border-color: var(--brand);
  outline: none;
}

/* ---------- 404 与提示条 ---------- */

.km-notfound {
  text-align: center;
  padding: 48px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.km-notfound h2 {
  font-size: 22px;
}

.km-notfound p {
  color: var(--ink-faint);
  font-size: 14px;
}

.km-note {
  font-size: 13px;
  color: var(--ink-soft);
  background: var(--surface);
  border-radius: 6px;
  padding: 8px 12px;
  border-left: 3px solid var(--accent-2);
}

/* ---------- 平板/PC 微调 ---------- */

@media (min-width: 768px) {
  .km-detail__hero {
    grid-template-columns: 320px 1fr;
    align-items: start;
  }

  .km-detail__fields {
    grid-template-columns: 1fr 1fr;
  }

  .km-btn {
    min-height: 40px;
  }

  .km-nav__link {
    min-height: 40px;
  }
}