/* =========================================================
   潮汐共写 · 云端接诗（接诗 tab 内新增区块）
   ========================================================= */
.cloud-relay {
  margin-top: clamp(40px, 6vw, 72px);
  padding-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--line);
}
.cloud-relay__head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: var(--sp-6); flex-wrap: wrap; margin-bottom: var(--sp-7);
}
.cloud-relay__intro { display: flex; flex-direction: column; gap: var(--sp-3); max-width: 620px; }
.cloud-relay__sub { font-family: var(--font-serif); font-size: var(--fs-sm); line-height: 2; color: var(--ink-3); letter-spacing: .02em; }
.cloud-relay__meta { display: flex; align-items: center; gap: var(--sp-5); flex-wrap: wrap; }
.cloud-relay__stat { display: flex; flex-direction: column; gap: 2px; font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: .12em; }
.cloud-relay__stat b { font-size: 24px; line-height: 1; color: var(--ink); letter-spacing: .02em; }
.cloud-relay__meta .btn { gap: 6px; }
.cloud-relay__meta .btn svg { width: 14px; height: 14px; }

.cloud-relay__grid {
  display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, .9fr);
  gap: clamp(20px, 3vw, 40px); align-items: start;
}
.cloud-relay__label {
  display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-3);
  font-size: var(--fs-xs); letter-spacing: .16em; color: var(--ink-2);
  padding-bottom: var(--sp-3); border-bottom: 1px solid var(--line); margin-bottom: var(--sp-4);
}
.cloud-relay__label em { font-style: normal; color: var(--ink-3); letter-spacing: .06em; }
.cloud-relay__hint { color: var(--ink-3); letter-spacing: .06em; font-size: 11px; }

.cloud-relay__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-3); }
.cloud-upper {
  position: relative; display: flex; flex-direction: column; gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-4) var(--sp-3);
  border: 1px solid var(--line); border-radius: var(--r-md);
  background: color-mix(in srgb, var(--surface) 46%, transparent);
  transition: border-color var(--dur-mic), background var(--dur-mic), transform var(--dur-mid) var(--ease);
}
.cloud-upper:hover { border-color: var(--line-2); background: color-mix(in srgb, var(--surface-2) 55%, transparent); }
.cloud-upper.is-picked { border-color: var(--accent-2); background: color-mix(in srgb, var(--accent-2) 9%, transparent); }
.cloud-upper__no { font-size: 10px; letter-spacing: .18em; color: var(--ink-3); }
.cloud-upper__text { font-family: var(--font-serif); font-size: 15.5px; line-height: 1.85; letter-spacing: .05em; color: var(--ink); }
.cloud-upper__meta { font-size: 10.5px; color: var(--ink-3); letter-spacing: .06em; }
.cloud-upper__tips { display: flex; gap: 5px; flex-wrap: wrap; }
.cloud-upper__tips .tag { font-size: 10px; padding: 1px 6px; }
.cloud-upper__foot { margin-top: auto; display: flex; justify-content: flex-end; }
.cloud-upper__foot .btn { padding: 0 10px; min-height: 30px; font-size: 11px; }
.cloud-upper__mine { font-size: 10.5px; color: var(--accent-2); letter-spacing: .1em; }

.cloud-relay__side { display: flex; flex-direction: column; gap: var(--sp-5); }
.cloud-relay__form {
  display: flex; flex-direction: column; gap: var(--sp-3);
  padding: var(--sp-5); border: 1px solid var(--line); border-radius: var(--r-md);
  background: color-mix(in srgb, var(--surface) 40%, transparent);
}
.cloud-relay__form .cloud-relay__label { margin-bottom: var(--sp-1); }
.cloud-relay__upper {
  font-family: var(--font-serif); font-size: var(--fs-sm); line-height: 1.9;
  color: var(--ink-3); letter-spacing: .04em;
  padding: var(--sp-3); border-radius: var(--r-sm);
  border: 1px dashed var(--line); min-height: 46px;
}
.cloud-relay__upper.is-on { color: var(--ink); border-style: solid; border-color: color-mix(in srgb, var(--accent-2) 40%, transparent); background: color-mix(in srgb, var(--accent-2) 6%, transparent); }
.cloud-relay__row { display: flex; gap: var(--sp-3); align-items: flex-end; }
.cloud-relay__form .textarea { min-height: 64px; }
.cloud-relay__form .btn { margin-top: var(--sp-1); }

.cloud-relay__book { margin-top: clamp(32px, 4vw, 52px); }
.cloud-relay__book-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-3); }
.cloud-poem {
  display: flex; flex-direction: column; gap: var(--sp-2);
  padding: var(--sp-4); border: 1px solid var(--line); border-radius: var(--r-md);
  background: color-mix(in srgb, var(--surface) 38%, transparent);
}
.cloud-poem__upper { font-family: var(--font-serif); font-size: 15px; line-height: 1.9; color: var(--ink); letter-spacing: .04em; }
.cloud-poem__lower { font-family: var(--font-serif); font-size: 15px; line-height: 1.9; color: var(--ink-2); letter-spacing: .04em; padding-left: var(--sp-4); border-left: 1px solid var(--accent-2); }
.cloud-poem__sign { font-size: 10.5px; color: var(--ink-3); letter-spacing: .06em; }
.cloud-poem__actions { display: flex; gap: var(--sp-2); margin-top: auto; }
.cloud-poem__actions .btn { min-height: 30px; padding: 0 10px; font-size: 11px; color: var(--ink-3); }

.cloud-relay__empty {
  grid-column: 1 / -1; display: flex; flex-direction: column; gap: 4px; align-items: center;
  padding: var(--sp-8) var(--sp-4); text-align: center;
  border: 1px dashed var(--line); border-radius: var(--r-md); color: var(--ink-3);
}
.cloud-relay__empty p { font-family: var(--font-serif); font-size: var(--fs-h4); color: var(--ink-2); }
.cloud-relay__empty span { font-size: var(--fs-xs); }

.cloud-relay__result {
  margin-top: var(--sp-6); padding: clamp(20px, 3vw, 34px);
  border: 1px solid color-mix(in srgb, var(--accent-2) 34%, transparent);
  border-radius: var(--r-md);
  background:
    radial-gradient(80% 120% at 50% 0%, color-mix(in srgb, var(--accent-2) 12%, transparent), transparent 70%),
    color-mix(in srgb, var(--surface) 40%, transparent);
  text-align: center;
}
.cloud-result__upper, .cloud-result__lower {
  font-family: var(--font-serif); font-size: clamp(17px, 1.8vw, 21px);
  line-height: 2; letter-spacing: .08em; color: var(--ink);
}
.cloud-result__lower { color: var(--ink-2); }
.cloud-result__sign { font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: .08em; margin-top: var(--sp-2); }
.cloud-result__actions { display: flex; justify-content: center; gap: var(--sp-2); margin-top: var(--sp-4); flex-wrap: wrap; }

.cloud-relay__offline {
  margin-top: var(--sp-4); padding: var(--sp-3) var(--sp-4);
  border: 1px dashed var(--line); border-radius: var(--r-sm);
  font-size: var(--fs-xs); color: var(--ink-3); line-height: 1.8;
}

/* 云端可用时，隐藏本地离线版大厅/表单，避免两套「盲盒大厅」并存 */
.relay.cloud-online > .relay__hall,
.relay.cloud-online > .relay__side,
.relay.cloud-online > .relay__collabs { display: none; }
/* 云端连不上时，隐藏云端区块，本地共创照常可用 */
.relay.cloud-offline > .cloud-relay { display: none; }

@media (max-width: 980px) {
  .cloud-relay__grid { grid-template-columns: 1fr; }
  .cloud-relay__book-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .cloud-relay__list { grid-template-columns: 1fr; }
  .cloud-relay__book-list { grid-template-columns: 1fr; }
  .cloud-relay__head { align-items: flex-start; }
  .cloud-relay__meta { width: 100%; justify-content: space-between; }
}