:root {
  --inbox-bg: #f4f5f7;
  --inbox-surface: #ffffff;
  --inbox-ink: #202a36;
  --inbox-muted: #667180;
  --inbox-line: #dbe1e8;
  --inbox-accent: #cf506d;
  --inbox-accent-soft: #fff0f3;
  --inbox-sage: #238a47;
  --inbox-sage-soft: #eef9f1;
  --inbox-shadow: 0 18px 48px rgba(32, 42, 54, .09);
}

body:has(.couple-inbox) .header,
body:has(.couple-inbox) .middle,
body:has(.couple-inbox) .header-wrap,
body:has(.couple-inbox) .bg-wrap { display: none !important; }

.couple-inbox,
.couple-inbox * { box-sizing: border-box; }

.couple-inbox {
  width: min(980px, calc(100% - 32px));
  min-height: 70vh;
  margin: 42px auto 88px;
  color: var(--inbox-ink);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

.couple-inbox button,
.couple-inbox input,
.couple-inbox select,
.couple-inbox textarea { font: inherit; }

.couple-inbox button,
.couple-inbox a { -webkit-tap-highlight-color: transparent; }
.couple-inbox a { color: inherit; text-decoration: none !important; }
.couple-inbox svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.couple-inbox__header {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: start;
  padding: 8px 0 28px;
  border-bottom: 1px solid var(--inbox-line);
}

.couple-inbox__back {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--inbox-line);
  border-radius: 8px;
  background: var(--inbox-surface);
  transition: transform 180ms ease, border-color 180ms ease;
}

.couple-inbox__back:hover { border-color: var(--inbox-accent); transform: translateX(-2px); }
.couple-inbox__header span,
.couple-inbox__overview span,
.couple-inbox__gate-copy > span { display: block; color: var(--inbox-accent); font-size: .78rem; font-weight: 750; }
.couple-inbox__header h1,
.couple-inbox__header p,
.couple-inbox__overview h2,
.couple-inbox__overview p,
.couple-inbox__gate h2,
.couple-inbox__gate p { margin: 0; }
.couple-inbox__header h1 { margin-top: 5px; font-family: "Noto Serif SC", serif; font-size: clamp(1.75rem, 4vw, 2.45rem); line-height: 1.16; letter-spacing: 0; }
.couple-inbox__header p { margin-top: 8px; color: var(--inbox-muted); font-size: .95rem; line-height: 1.65; }
.couple-inbox__home { align-self: center; padding: 10px 0; color: var(--inbox-muted); font-size: .9rem; }
.couple-inbox__home:hover { color: var(--inbox-accent); }

.couple-inbox__notice,
.couple-inbox__gate {
  margin-top: 36px;
  padding: 30px 0;
  border-top: 2px solid var(--inbox-ink);
  border-bottom: 1px solid var(--inbox-line);
}

.couple-inbox__notice strong { display: block; font-family: "Noto Serif SC", serif; font-size: 1.4rem; }
.couple-inbox__notice p { max-width: 40rem; margin: 10px 0 18px; color: var(--inbox-muted); line-height: 1.75; }
.couple-inbox__notice a { color: var(--inbox-accent); font-weight: 700; }

.couple-inbox__gate { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .75fr); gap: 48px; align-items: end; }
.couple-inbox__gate h2 { margin-top: 8px; font-family: "Noto Serif SC", serif; font-size: clamp(1.45rem, 3vw, 2rem); line-height: 1.35; }
.couple-inbox__gate p { margin-top: 13px; color: var(--inbox-muted); font-size: .93rem; line-height: 1.7; }
.couple-inbox__gate form { display: grid; gap: 13px; }
.couple-inbox__gate label,
.couple-inbox-reply label { display: grid; gap: 7px; color: var(--inbox-muted); font-size: .82rem; font-weight: 700; }
.couple-inbox__gate input,
.couple-inbox__gate select,
.couple-inbox-reply textarea { width: 100%; min-height: 46px; padding: 11px 12px; border: 1px solid var(--inbox-line); border-radius: 6px; color: var(--inbox-ink); background: var(--inbox-surface); outline: 0; }
.couple-inbox-reply textarea { min-height: 132px; resize: vertical; line-height: 1.65; }
.couple-inbox__gate input:focus,
.couple-inbox__gate select:focus,
.couple-inbox-reply textarea:focus { border-color: var(--inbox-accent); box-shadow: 0 0 0 3px rgba(207,80,109,.12); }
.couple-inbox__gate button,
.couple-inbox-reply__actions button:last-child { min-height: 46px; border: 0; border-radius: 6px; color: #fff; background: var(--inbox-ink); cursor: pointer; font-weight: 750; }
.couple-inbox__gate button:hover,
.couple-inbox-reply__actions button:last-child:hover { background: var(--inbox-accent); }
.couple-inbox__gate [data-inbox-gate-status] { min-height: 1.3em; margin: 0; color: #b3394e; font-size: .85rem; }

.couple-inbox__workspace { padding-top: 30px; }
.couple-inbox__gate[hidden],
.couple-inbox__workspace[hidden] { display: none !important; }
.couple-inbox__overview { display: flex; justify-content: space-between; gap: 24px; align-items: end; padding-bottom: 22px; }
.couple-inbox__overview h2 { margin-top: 7px; font-family: "Noto Serif SC", serif; font-size: 1.65rem; }
.couple-inbox__overview p { max-width: 18rem; color: var(--inbox-muted); font-size: .9rem; line-height: 1.55; text-align: right; }

.couple-inbox__toolbar { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 14px 0; border-top: 1px solid var(--inbox-line); border-bottom: 1px solid var(--inbox-line); }
.couple-inbox__filters,
.couple-inbox__states { display: flex; flex-wrap: wrap; gap: 7px; }
.couple-inbox__filters button,
.couple-inbox__states button,
.couple-inbox__identity button { min-height: 36px; padding: 7px 10px; border: 1px solid transparent; border-radius: 6px; color: var(--inbox-muted); background: transparent; cursor: pointer; font-size: .85rem; font-weight: 700; }
.couple-inbox__filters button[aria-pressed="true"] { border-color: #edc4ce; color: #9e2d46; background: var(--inbox-accent-soft); }
.couple-inbox__states button[aria-pressed="true"] { border-color: #bfd9c7; color: #1f7340; background: var(--inbox-sage-soft); }
.couple-inbox__filters button:hover,
.couple-inbox__states button:hover,
.couple-inbox__identity button:hover { border-color: var(--inbox-line); color: var(--inbox-ink); }

.couple-inbox__identity { display: flex; gap: 9px; align-items: center; padding: 16px 0; color: var(--inbox-muted); font-size: .86rem; }
.couple-inbox__identity strong { color: var(--inbox-ink); }
.couple-inbox__identity button { min-height: auto; padding: 2px 0; color: var(--inbox-accent); }

.couple-inbox__list { display: grid; border-top: 1px solid var(--inbox-line); }
.couple-inbox-item { display: grid; grid-template-columns: 104px minmax(0, 1fr) auto; gap: 20px; align-items: start; padding: 24px 4px; border-bottom: 1px solid var(--inbox-line); }
.couple-inbox-item__type { display: grid; gap: 8px; padding-top: 3px; color: var(--inbox-muted); font-size: .78rem; font-weight: 750; }
.couple-inbox-item__type b { width: max-content; padding: 5px 7px; border-radius: 4px; color: #8f2d45; background: var(--inbox-accent-soft); font-size: .72rem; }
.couple-inbox-item.is-feedback .couple-inbox-item__type b { color: #946a18; background: #fff8df; }
.couple-inbox-item.is-anniversary .couple-inbox-item__type b { color: #41659b; background: #eef4ff; }
.couple-inbox-item.is-story .couple-inbox-item__type b { color: #5d4a9a; background: #f3f0ff; }
.couple-inbox-item.is-message .couple-inbox-item__type b { color: #276c65; background: #ecf8f5; }
.couple-inbox-item__content { min-width: 0; }
.couple-inbox-item__content h3,
.couple-inbox-item__content p { margin: 0; }
.couple-inbox-item__content h3 { font-family: "Noto Serif SC", serif; font-size: 1.13rem; line-height: 1.45; }
.couple-inbox-item__content > p { margin-top: 7px; color: var(--inbox-muted); font-size: .94rem; line-height: 1.68; overflow-wrap: anywhere; }
.couple-inbox-item__meta { display: block; margin-top: 11px; color: #87919e; font-size: .78rem; line-height: 1.5; }
.couple-inbox-item__replies { display: grid; gap: 5px; margin-top: 14px; padding-left: 12px; border-left: 2px solid #e7ebef; }
.couple-inbox-item__replies p { color: var(--inbox-muted); font-size: .83rem; line-height: 1.55; }
.couple-inbox-item__replies b { color: var(--inbox-ink); font-size: .78rem; }

.couple-inbox-item__actions { display: grid; min-width: 126px; gap: 7px; justify-items: end; }
.couple-inbox-item__state { display: inline-flex; align-items: center; min-height: 28px; padding: 5px 7px; border-radius: 4px; color: #53606f; background: #edf0f3; font-size: .75rem; font-weight: 750; }
.couple-inbox-item[data-state="done"] .couple-inbox-item__state { color: #217041; background: var(--inbox-sage-soft); }
.couple-inbox-item[data-state="later"] .couple-inbox-item__state { color: #896c21; background: #fff8df; }
.couple-inbox-item__buttons { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.couple-inbox-item__buttons button { min-height: 34px; padding: 6px 8px; border: 1px solid var(--inbox-line); border-radius: 5px; color: var(--inbox-ink); background: var(--inbox-surface); cursor: pointer; font-size: .78rem; font-weight: 700; white-space: nowrap; }
.couple-inbox-item__buttons button:hover { border-color: var(--inbox-accent); color: var(--inbox-accent); }
.couple-inbox-item__buttons button.is-complete { color: #237342; border-color: #b7d7c1; background: var(--inbox-sage-soft); }
.couple-inbox-item__buttons button.is-reply { color: #9c2f47; border-color: #edc4ce; background: var(--inbox-accent-soft); }

.couple-inbox__loading,
.couple-inbox__empty { display: grid; min-height: 180px; place-items: center; align-content: center; gap: 10px; color: var(--inbox-muted); text-align: center; }
.couple-inbox__loading i { width: 21px; height: 21px; border: 2px solid #d8dee6; border-top-color: var(--inbox-accent); border-radius: 50%; animation: inbox-spin 700ms linear infinite; }
.couple-inbox__empty strong { color: var(--inbox-ink); font-family: "Noto Serif SC", serif; font-size: 1.18rem; }
.couple-inbox__empty p { max-width: 20rem; margin: 0; font-size: .9rem; line-height: 1.65; }
@keyframes inbox-spin { to { transform: rotate(360deg); } }

.couple-inbox-reply { width: min(560px, calc(100% - 24px)); max-height: min(650px, calc(100% - 24px)); padding: 0; border: 0; border-radius: 8px; color: var(--inbox-ink); background: var(--inbox-surface); box-shadow: 0 28px 90px rgba(22,29,36,.28); }
.couple-inbox-reply::backdrop { background: rgba(27,35,44,.46); backdrop-filter: blur(3px); }
.couple-inbox-reply__close { position: absolute; top: 14px; right: 14px; }
.couple-inbox-reply__close button { border: 0; color: transparent; background: transparent; cursor: pointer; }
.couple-inbox-reply__close button::after { color: var(--inbox-muted); content: "×"; font-size: 1.6rem; }
.couple-inbox-reply__handle { width: 42px; height: 4px; margin: 13px auto 0; border-radius: 4px; background: #dde2e8; }
.couple-inbox-reply__head,
.couple-inbox-reply form[data-inbox-reply-form] { padding: 24px 26px; }
.couple-inbox-reply__head { padding-bottom: 0; }
.couple-inbox-reply__head span { color: var(--inbox-accent); font-size: .79rem; font-weight: 750; }
.couple-inbox-reply__head h2 { margin: 7px 36px 0 0; font-family: "Noto Serif SC", serif; font-size: 1.38rem; line-height: 1.38; }
.couple-inbox-reply__actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 16px; }
.couple-inbox-reply__actions button { min-height: 42px; padding: 9px 14px; border-radius: 6px; cursor: pointer; font-weight: 750; }
.couple-inbox-reply__actions button:first-child { border: 1px solid var(--inbox-line); color: var(--inbox-muted); background: #fff; }
.couple-inbox-reply [data-inbox-reply-status] { min-height: 1.2em; margin: 10px 0 0; color: #b3394e; font-size: .82rem; }

@media (max-width: 720px) {
  .couple-inbox { width: min(100% - 24px, 620px); margin: 20px auto 88px; }
  .couple-inbox__header { grid-template-columns: 44px minmax(0, 1fr); gap: 13px; padding-bottom: 22px; }
  .couple-inbox__home { display: none; }
  .couple-inbox__header h1 { font-size: 1.82rem; }
  .couple-inbox__gate { grid-template-columns: 1fr; gap: 24px; margin-top: 25px; }
  .couple-inbox__overview { display: grid; gap: 9px; align-items: start; }
  .couple-inbox__overview h2 { font-size: 1.42rem; }
  .couple-inbox__overview p { max-width: none; text-align: left; }
  .couple-inbox__toolbar { grid-template-columns: 1fr; align-items: start; }
  .couple-inbox__filters { flex-wrap: nowrap; padding-bottom: 3px; overflow-x: auto; scrollbar-width: none; }
  .couple-inbox__filters::-webkit-scrollbar { display: none; }
  .couple-inbox__filters button { flex: 0 0 auto; }
  .couple-inbox-item { grid-template-columns: 1fr; gap: 12px; padding: 20px 0; }
  .couple-inbox-item__type { display: flex; flex-direction: row; align-items: center; }
  .couple-inbox-item__actions { min-width: 0; justify-items: start; }
  .couple-inbox-item__buttons { justify-content: flex-start; }
  .couple-inbox-reply { width: min(100% - 16px, 560px); margin: auto 8px 8px; }
  .couple-inbox-reply__head,
  .couple-inbox-reply form[data-inbox-reply-form] { padding-right: 18px; padding-left: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .couple-inbox__loading i { animation: none; }
  .couple-inbox__back { transition: none; }
}