/* ============================================================================
 * koi-oc.css — OC V2 Web 基础层样式（W0）。配 koi-oc-core.js / window.koiOC。
 * ----------------------------------------------------------------------------
 * 设计令牌：卡片圆角 12px、输入 8px、按钮 pill(999px)；间距/配色/hover 触感对齐
 *          动态(koi-space)体系。单一 accent = var(--koi-oc-accent)（applySkin 注入
 *          色板主色；未注入时兜底中性深灰 #3a3f45，与 space 主色一致）。
 * 暗色：html.koi-dark 下写变量覆盖（★禁 @media prefers-color-scheme，手动开关才不错位）。
 * 命名空间 .koi-oc-* 全隔离；渐变信息条一律压黑 rgba(0,0,0,.55)→0 保证 AA 对比。
 * B2 字体图标仅用已核实字形：b2-star-line / b2-image-fill / b2-close-line /
 *   b2-search-line / b2-check-line / b2-add-circle-line（见 fix-oc-w0 报告核实记录）。
 * ==========================================================================*/

/* ---------- 设计令牌（静态色/圆角/阴影随主题；accent 不在此声明，走 var 兜底以便 applySkin 级联） ---------- */
.koi-oc-chip,
.koi-oc-card,
.koi-oc-immersive,
.koi-oc-cast,
.koi-oc-picker,
.koi-oc-pmask {
  --koi-oc-fg: #3a3f45;
  --koi-oc-fg2: #5b6168;
  --koi-oc-muted: #9aa0a8;
  --koi-oc-line: #ebedf0;
  --koi-oc-soft: #f5f6f7;
  --koi-oc-bg: #ffffff;
  --koi-oc-card-rgb: 255, 255, 255;
  --koi-oc-radius: 12px;
  --koi-oc-radius-sm: 8px;
  --koi-oc-shadow: 0 4px 16px rgba(16, 24, 40, .10);
  --koi-oc-shadow-hover: 0 10px 28px rgba(16, 24, 40, .16);
  -webkit-font-smoothing: antialiased;
}
html.koi-dark .koi-oc-chip,
html.koi-dark .koi-oc-card,
html.koi-dark .koi-oc-immersive,
html.koi-dark .koi-oc-cast,
html.koi-dark .koi-oc-picker,
html.koi-dark .koi-oc-pmask {
  --koi-oc-fg: #d6d9dd;
  --koi-oc-fg2: #a8adb3;
  --koi-oc-muted: #777c82;
  --koi-oc-line: #2c2f33;
  --koi-oc-soft: #232629;
  --koi-oc-bg: #1e2124;
  --koi-oc-card-rgb: 30, 33, 36;
  --koi-oc-shadow: 0 4px 18px rgba(0, 0, 0, .4);
  --koi-oc-shadow-hover: 0 12px 30px rgba(0, 0, 0, .55);
}
.koi-oc-chip *,
.koi-oc-card *,
.koi-oc-immersive *,
.koi-oc-cast *,
.koi-oc-picker *,
.koi-oc-pmask * { box-sizing: border-box; }

/* 通用占位（缺图） */
.koi-oc-ph,
.koi-oc-card-cover-ph {
  display: flex; align-items: center; justify-content: center;
  color: var(--koi-oc-muted); background: var(--koi-oc-soft);
}
.koi-oc-card-cover-ph { position: absolute; inset: 0; font-size: 34px; }
.koi-oc-card-cover-ph i { opacity: .55; }

/* 关注数 pill（默认浅底，玻璃/实心变体见下） */
.koi-oc-follow {
  display: inline-flex; align-items: center; gap: 3px;
  font-size: 11.5px; font-weight: 600; line-height: 1.6;
  padding: 1px 8px; border-radius: 999px; white-space: nowrap;
  background: var(--koi-oc-soft); color: var(--koi-oc-muted);
}
.koi-oc-follow i { font-size: 12px; line-height: 1; }
.koi-oc-follow-on { background: color-mix(in srgb, var(--koi-oc-accent, #3a3f45) 12%, transparent); color: var(--koi-oc-accent, #3a3f45); }
.koi-oc-follow-glass { background: rgba(255, 255, 255, .22); color: #fff; -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.koi-oc-follow-sm { font-size: 10.5px; padding: 0 7px; }

/* ---------- chip：dense 内联 ---------- */
.koi-oc-chip {
  display: inline-flex; align-items: center; gap: 6px;
  max-width: 220px; height: 30px; padding: 0 12px 0 3px;
  border: 1px solid var(--koi-oc-line); border-radius: 999px;
  background: var(--koi-oc-bg); color: var(--koi-oc-fg);
  font-size: 13px; font-weight: 500; cursor: pointer; vertical-align: middle;
  transition: border-color .16s ease, box-shadow .16s ease, transform .08s ease;
  -webkit-appearance: none; appearance: none;
}
.koi-oc-chip:hover { border-color: var(--koi-oc-accent, #3a3f45); box-shadow: var(--koi-oc-shadow); }
.koi-oc-chip:active { transform: scale(.97); }
.koi-oc-chip:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(120, 124, 130, .4); box-shadow: 0 0 0 3px color-mix(in srgb, var(--koi-oc-accent, #3a3f45) 30%, transparent); }
.koi-oc-chip-av { width: 24px; height: 24px; border-radius: 50%; object-fit: cover; flex: 0 0 24px; background: var(--koi-oc-soft); font-size: 13px; }
.koi-oc-chip-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- card：竖卡（cover 3:4 + 底信息） ---------- */
.koi-oc-card {
  display: flex; flex-direction: column;
  border-radius: var(--koi-oc-radius); overflow: hidden;
  background: var(--koi-oc-bg); border: 1px solid var(--koi-oc-line);
  cursor: pointer; -webkit-appearance: none; appearance: none;
  transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}
.koi-oc-card:hover { box-shadow: var(--koi-oc-shadow-hover); transform: translateY(-2px); }
.koi-oc-card:active { transform: translateY(-2px) scale(.985); }
.koi-oc-card:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(120, 124, 130, .45); box-shadow: 0 0 0 3px color-mix(in srgb, var(--koi-oc-accent, #3a3f45) 40%, transparent); }
.koi-oc-card-cover {
  position: relative; aspect-ratio: 3 / 4; width: 100%;
  background: var(--koi-oc-soft) center / cover no-repeat;
}
.koi-oc-card-grad {
  position: absolute; left: 0; right: 0; bottom: 0; height: 62%;
  background: linear-gradient(to top, rgba(0, 0, 0, .72) 0%, rgba(0, 0, 0, .34) 42%, rgba(0, 0, 0, 0) 100%);
  pointer-events: none;
}
.koi-oc-card-foot {
  position: absolute; left: 0; right: 0; bottom: 0;
  display: flex; align-items: flex-end; gap: 9px; padding: 12px;
}
.koi-oc-card-av {
  width: 40px; height: 40px; border-radius: 50%; object-fit: cover; flex: 0 0 40px;
  border: 2px solid rgba(255, 255, 255, .9); background: var(--koi-oc-soft); font-size: 18px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .3);
}
.koi-oc-card-id { min-width: 0; flex: 1; padding-bottom: 2px; }
.koi-oc-card-name {
  display: block; color: #fff; font-size: 15px; font-weight: 700; line-height: 1.25;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  text-shadow: 0 1px 3px rgba(0, 0, 0, .5);
}
.koi-oc-card-id .koi-oc-follow { margin-top: 5px; }
.koi-oc-card-body { padding: 10px 13px 13px; display: flex; flex-direction: column; gap: 4px; }
.koi-oc-card-summary {
  margin: 0; font-size: 13px; line-height: 1.5; color: var(--koi-oc-fg2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.koi-oc-card-summary-empty { color: var(--koi-oc-muted); font-style: italic; }
.koi-oc-card-owner { font-size: 11.5px; color: var(--koi-oc-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- immersiveCard：满宽沉浸卡 ---------- */
.koi-oc-immersive {
  position: relative; display: block; width: 100%;
  border-radius: var(--koi-oc-radius); overflow: hidden;
  background: var(--koi-oc-soft); cursor: pointer;
  -webkit-appearance: none; appearance: none;
  transition: box-shadow .2s ease, transform .2s ease;
}
.koi-oc-immersive:hover { box-shadow: var(--koi-oc-shadow-hover); transform: translateY(-2px); }
.koi-oc-immersive:active { transform: translateY(-2px) scale(.992); }
.koi-oc-immersive:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(120, 124, 130, .45); box-shadow: 0 0 0 3px color-mix(in srgb, var(--koi-oc-accent, #3a3f45) 40%, transparent); }
.koi-oc-immersive-cover {
  position: relative; width: 100%; aspect-ratio: 5 / 4; max-height: 460px;
  background: var(--koi-oc-soft) center / cover no-repeat;
}
.koi-oc-immersive-grad {
  position: absolute; left: 0; right: 0; bottom: 0; height: 70%;
  background: linear-gradient(to top, rgba(0, 0, 0, .55) 0%, rgba(0, 0, 0, .28) 45%, rgba(0, 0, 0, 0) 100%);
  pointer-events: none;
}
.koi-oc-immersive-info {
  position: absolute; left: 0; right: 0; bottom: 0;
  display: flex; align-items: flex-end; gap: 12px; padding: 16px 18px;
}
.koi-oc-immersive-av {
  width: 54px; height: 54px; border-radius: 50%; object-fit: cover; flex: 0 0 54px;
  border: 2px solid rgba(255, 255, 255, .92); background: var(--koi-oc-soft); font-size: 22px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .35);
}
.koi-oc-immersive-meta { min-width: 0; flex: 1; padding-bottom: 2px; }
.koi-oc-immersive-namerow { display: flex; align-items: center; gap: 8px; }
.koi-oc-immersive-name {
  color: #fff; font-size: 18px; font-weight: 800; line-height: 1.2;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  text-shadow: 0 1px 4px rgba(0, 0, 0, .55);
}
.koi-oc-immersive-summary {
  margin: 6px 0 0; color: rgba(255, 255, 255, .92); font-size: 13px; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  text-shadow: 0 1px 3px rgba(0, 0, 0, .5);
}
.koi-oc-immersive-owner { display: block; margin-top: 5px; font-size: 11.5px; color: rgba(255, 255, 255, .78); text-shadow: 0 1px 3px rgba(0, 0, 0, .5); }

/* ---------- castRow：横滑角色行（卡宽 150） ---------- */
.koi-oc-cast { position: relative; }
.koi-oc-cast-track {
  display: flex; gap: 10px; padding: 2px 2px 8px;
  overflow-x: auto; overflow-y: hidden;
  scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch;
  scrollbar-width: none; -ms-overflow-style: none;
}
.koi-oc-cast-track::-webkit-scrollbar { width: 0; height: 0; display: none; }
.koi-oc-cast-card {
  scroll-snap-align: start; flex: 0 0 150px; width: 150px;
  position: relative; border-radius: var(--koi-oc-radius); overflow: hidden;
  background: var(--koi-oc-soft); cursor: pointer; border: 0; padding: 0;
  -webkit-appearance: none; appearance: none;
  transition: transform .16s ease, box-shadow .16s ease;
}
.koi-oc-cast-card:hover { transform: translateY(-2px); box-shadow: var(--koi-oc-shadow-hover); }
.koi-oc-cast-card:active { transform: scale(.97); }
.koi-oc-cast-card:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(120, 124, 130, .45); box-shadow: 0 0 0 3px color-mix(in srgb, var(--koi-oc-accent, #3a3f45) 40%, transparent); }
.koi-oc-cast-cover { position: relative; width: 100%; aspect-ratio: 3 / 4; background: var(--koi-oc-soft) center / cover no-repeat; }
.koi-oc-cast-grad {
  position: absolute; left: 0; right: 0; bottom: 0; height: 55%;
  background: linear-gradient(to top, rgba(0, 0, 0, .7) 0%, rgba(0, 0, 0, 0) 100%);
  pointer-events: none;
}
.koi-oc-cast-info { position: absolute; left: 0; right: 0; bottom: 0; padding: 9px 10px; text-align: left; }
.koi-oc-cast-name {
  display: block; color: #fff; font-size: 13px; font-weight: 700; line-height: 1.25;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-shadow: 0 1px 3px rgba(0, 0, 0, .55);
}
.koi-oc-cast-info .koi-oc-follow { margin-top: 4px; }

/* ---------- applySkin：沉浸皮肤 ---------- */
.koi-oc-skin { position: relative; isolation: isolate; }
.koi-oc-skin::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background-image: var(--koi-oc-cover, none);
  background-position: center; background-size: cover; background-repeat: no-repeat;
  filter: blur(40px) brightness(.45); transform: scale(1.18);
  pointer-events: none;
}
.koi-oc-skin > * { position: relative; z-index: 1; }
/* 皮肤内的内容卡半透明 + 背板模糊，让沉浸底透出（accent 由 root 级联） */
.koi-oc-skin .koi-oc-card,
.koi-oc-skin .koi-oc-immersive,
.koi-oc-skin .koi-oc-glass {
  background: rgba(var(--koi-oc-card-rgb), .82);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-color: rgba(var(--koi-oc-card-rgb), .28);
}

/* ---------- 按钮（pill；单一 accent；文案不换行） ---------- */
.koi-oc-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 40px; padding: 0 20px; border: 1px solid transparent; border-radius: 999px;
  font-size: 14px; font-weight: 600; line-height: 1; white-space: nowrap; cursor: pointer;
  -webkit-appearance: none; appearance: none;
  transition: transform .08s ease, opacity .15s ease, background .15s ease, border-color .15s ease;
}
.koi-oc-btn:active { transform: scale(.97); }
.koi-oc-btn-primary { background: var(--koi-oc-accent, #3a3f45); color: #fff; }
.koi-oc-btn-primary:hover { opacity: .92; }
.koi-oc-btn-primary:disabled { opacity: .5; cursor: default; }
.koi-oc-btn-ghost { background: transparent; border-color: var(--koi-oc-line); color: var(--koi-oc-fg2); }
.koi-oc-btn-ghost:hover { border-color: var(--koi-oc-muted); color: var(--koi-oc-fg); }

/* ---------- 骨架 shimmer ---------- */
.koi-oc-skel { position: relative; overflow: hidden; background: var(--koi-oc-soft); border-radius: var(--koi-oc-radius-sm); }
.koi-oc-skel::after {
  content: ""; position: absolute; inset: 0; transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .35), transparent);
  animation: koi-oc-shimmer 1.3s infinite;
}
html.koi-dark .koi-oc-skel::after { background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .08), transparent); }

/* ============================================================================
 * picker：移动贴底上拉 / 桌面居中弹层（骨架抄 koi-share-sheet）
 * ==========================================================================*/
.koi-oc-pmask {
  position: fixed; inset: 0; z-index: 100030;
  display: flex; align-items: flex-end; justify-content: center;
  background: rgba(17, 19, 22, .5);
  opacity: 0; transition: opacity .24s ease;
  -webkit-tap-highlight-color: transparent;
}
.koi-oc-pmask.koi-oc-in { opacity: 1; }
.koi-oc-picker {
  position: relative; width: 100%; max-width: 560px;
  display: flex; flex-direction: column;
  background: var(--koi-oc-bg); color: var(--koi-oc-fg);
  border-radius: 22px 22px 0 0;
  box-shadow: 0 -8px 40px rgba(0, 0, 0, .18);
  padding: 6px 20px calc(16px + env(safe-area-inset-bottom, 0px));
  transform: translateY(100%);
  transition: transform .28s cubic-bezier(.32, .72, 0, 1);
  will-change: transform; max-height: 88vh;
}
.koi-oc-pmask.koi-oc-in .koi-oc-picker { transform: translateY(0); }
.koi-oc-picker-grab { width: 38px; height: 4px; border-radius: 4px; background: var(--koi-oc-line); margin: 8px auto 4px; flex: none; }

.koi-oc-picker-head { display: flex; align-items: center; gap: 10px; padding: 6px 0 12px; flex: none; }
.koi-oc-picker-title { font-size: 15px; font-weight: 600; color: var(--koi-oc-fg); }
.koi-oc-picker-count { margin-left: auto; font-size: 12.5px; font-weight: 600; color: var(--koi-oc-accent, #3a3f45); }
.koi-oc-picker-x {
  width: 32px; height: 32px; flex: none; border: 0; padding: 0; margin: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; color: var(--koi-oc-muted); cursor: pointer; border-radius: 50%; font-size: 18px;
  -webkit-appearance: none; appearance: none; transition: background .15s, color .15s;
}
.koi-oc-picker-x:hover { background: var(--koi-oc-soft); color: var(--koi-oc-fg); }

.koi-oc-picker-search {
  display: flex; align-items: center; gap: 8px; flex: none;
  background: var(--koi-oc-soft); border-radius: var(--koi-oc-radius-sm);
  padding: 0 12px; height: 40px; margin-bottom: 12px;
}
.koi-oc-picker-search i { font-size: 17px; line-height: 1; color: var(--koi-oc-muted); }
.koi-oc-picker-input {
  flex: 1; min-width: 0; border: 0 !important; outline: 0 !important; box-shadow: none !important;
  background: transparent !important; color: var(--koi-oc-fg); font-size: 14px; font-family: inherit;
  -webkit-appearance: none; appearance: none;
}
.koi-oc-picker-input::placeholder { color: var(--koi-oc-muted); }

.koi-oc-picker-body { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; margin: 0 -4px; padding: 2px 4px; }
.koi-oc-picker-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 2px 0 4px; }

.koi-oc-pick-item {
  display: flex; flex-direction: column; gap: 6px;
  border: 0; background: transparent; padding: 0; cursor: pointer; text-align: center;
  -webkit-appearance: none; appearance: none;
}
.koi-oc-pick-cover {
  position: relative; width: 100%; aspect-ratio: 3 / 4; border-radius: 10px; overflow: hidden;
  background: var(--koi-oc-soft) center / cover no-repeat;
  border: 2px solid transparent; transition: border-color .16s ease, transform .1s ease;
}
.koi-oc-pick-item:active .koi-oc-pick-cover { transform: scale(.96); }
.koi-oc-pick-check {
  position: absolute; top: 6px; right: 6px; width: 22px; height: 22px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 14px;
  background: rgba(20, 22, 26, .5); color: #fff; opacity: 0; transform: scale(.7);
  transition: opacity .14s ease, transform .14s ease, background .14s ease;
}
.koi-oc-pick-item.is-on .koi-oc-pick-cover { border-color: var(--koi-oc-accent, #3a3f45); }
.koi-oc-pick-item.is-on .koi-oc-pick-check { opacity: 1; transform: scale(1); background: var(--koi-oc-accent, #3a3f45); }
.koi-oc-pick-item:focus-visible { outline: none; }
.koi-oc-pick-item:focus-visible .koi-oc-pick-cover { border-color: var(--koi-oc-accent, #3a3f45); box-shadow: 0 0 0 3px rgba(120, 124, 130, .4); box-shadow: 0 0 0 3px color-mix(in srgb, var(--koi-oc-accent, #3a3f45) 28%, transparent); }
.koi-oc-pick-name { font-size: 12.5px; color: var(--koi-oc-fg2); line-height: 1.3; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* picker 骨架 / 空态 */
.koi-oc-pick-skel { display: flex; flex-direction: column; gap: 6px; }
.koi-oc-pick-skel-cover { width: 100%; aspect-ratio: 3 / 4; border-radius: 10px; }
.koi-oc-pick-skel-name { height: 11px; width: 70%; margin: 2px auto 0; border-radius: 5px; }
.koi-oc-picker-empty { text-align: center; padding: 44px 20px; color: var(--koi-oc-muted); }
.koi-oc-picker-empty i { font-size: 40px; opacity: .5; }
.koi-oc-picker-empty-t { margin: 12px 0 0; font-size: 15px; font-weight: 600; color: var(--koi-oc-fg2); }
.koi-oc-picker-empty-d { margin: 6px 0 0; font-size: 13px; line-height: 1.5; }

.koi-oc-picker-foot { flex: none; padding-top: 12px; }
.koi-oc-picker-done { width: 100%; height: 44px; font-size: 15px; }

/* 桌面：居中浮层卡 */
@media (min-width: 768px) {
  .koi-oc-pmask { align-items: center; }
  .koi-oc-picker {
    max-width: 480px; border-radius: 18px;
    padding: 10px 22px 22px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, .24);
    transform: translateY(18px) scale(.98); max-height: 84vh;
  }
  .koi-oc-pmask.koi-oc-in .koi-oc-picker { transform: translateY(0) scale(1); }
  .koi-oc-picker-grab { display: none; }
  .koi-oc-picker-grid { grid-template-columns: repeat(4, 1fr); }
}

/* 小屏微调 */
@media (max-width: 400px) {
  .koi-oc-picker-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- 动画 / reduced-motion ---------- */
@keyframes koi-oc-shimmer { 100% { transform: translateX(100%); } }
@media (prefers-reduced-motion: reduce) {
  .koi-oc-pmask, .koi-oc-picker { transition: opacity .16s ease; }
  .koi-oc-picker { transform: none !important; }
  .koi-oc-card, .koi-oc-immersive, .koi-oc-cast-card, .koi-oc-chip, .koi-oc-btn { transition: none; }
  .koi-oc-skel::after { animation: none; }
}