:root {
  --bg: #f7f7f5;
  --card: #ffffff;
  --line: #e6e4df;
  --text: #1f1f1d;
  --muted: #7a7873;
  --accent: #1f6feb;
  --accent-soft: #eaf2fe;
  --danger: #c0392b;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 15px/1.6 -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.hd { margin-bottom: 24px; }
.logo { font-size: 15px; font-weight: 500; color: var(--muted); letter-spacing: .02em; }
.logo span { color: var(--accent); }
.hd h1 { font-size: 26px; font-weight: 500; margin: 8px 0 6px; }
.sub { margin: 0; color: var(--muted); font-size: 14px; }

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

#prompt {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  font: inherit;
  font-size: 15px;
  resize: vertical;
  outline: none;
  background: #fcfcfb;
}
#prompt:focus { border-color: var(--accent); background: #fff; }
#prompt.over-limit { border-color: var(--danger); background: #fffafa; }

/* 字数计数器 + 超限明示：把「已用 / 上限」摊在输入框下面。
   以前只有 maxlength，粘贴超过上限时浏览器静默截断，用户要等出图才发现内容少了一半。 */
.pm-meta {
  display: flex; align-items: center; gap: 10px;
  margin-top: 6px; font-size: 12px; color: var(--muted);
}
.pm-count { margin-left: auto; font-variant-numeric: tabular-nums; white-space: nowrap; }
.pm-count.near { color: #b45309; }
.pm-count.full { color: var(--danger); font-weight: 500; }
.pm-warn { color: var(--danger); }

.row { display: flex; align-items: center; gap: 12px; margin-top: 14px; flex-wrap: wrap; }
.spacer { flex: 1; }

.fld { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.fld select {
  font: inherit; font-size: 14px; color: var(--text);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 6px 8px; background: #fff; outline: none;
}
.credits {
  font-style: normal; font-size: 12px; color: var(--accent);
  background: rgba(0, 0, 0, 0.04);
  border-radius: 6px; padding: 2px 7px;
  cursor: help; white-space: nowrap;
}

.btn {
  font: inherit; font-size: 15px; font-weight: 500;
  background: var(--accent); color: #fff;
  border: none; border-radius: 10px;
  padding: 10px 22px; cursor: pointer;
}
.btn:hover { filter: brightness(1.06); }
.btn:disabled { background: #c9c7c2; cursor: not-allowed; }
.btn.ghost {
  background: transparent; color: var(--accent);
  border: 1px solid var(--line); text-decoration: none;
  display: inline-block; padding: 8px 16px; font-size: 14px;
}

.chips { margin-top: 14px; display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  font-size: 13px; color: var(--muted);
  background: #f4f3f0; border: 1px solid var(--line);
  border-radius: 999px; padding: 5px 12px; cursor: pointer;
}
.chip:hover { color: var(--accent); background: var(--accent-soft); border-color: #cfe0fb; }

.status {
  display: flex; align-items: center; gap: 10px;
  margin-top: 20px; color: var(--muted); font-size: 14px;
}
.spin {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid var(--line); border-top-color: var(--accent);
  animation: r .8s linear infinite;
}
@keyframes r { to { transform: rotate(360deg); } }

.err {
  margin-top: 20px; padding: 12px 14px;
  background: #fdecea; color: var(--danger);
  border-radius: 10px; font-size: 14px;
}

.result { margin-top: 28px; }
.result-hd { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
h2 { font-size: 17px; font-weight: 500; margin: 0; }

/* 图片有时效（后端 5 分钟后连对象带记录一起删）：结果区常驻一行保留期提示 + 倒计时 */
.retain-bar {
  font-size: 12px; color: var(--muted);
  background: #faf9f6; border: 1px solid var(--line);
  border-radius: 8px; padding: 7px 12px; margin-bottom: 12px;
}
.retain-bar b { color: var(--accent); font-weight: 600; }
.retain-bar.urgent { color: #9a5b00; background: #fff8e8; border-color: #f0dcae; }
.retain-bar.urgent b { color: #b45309; }
.expired-note {
  font-size: 13px; color: var(--muted); text-align: center;
  border: 1px dashed var(--line); border-radius: 10px; padding: 28px 16px;
}
.hint { font-size: 12px; font-weight: 400; color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.grid.small { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }

.grid figure { margin: 0; }
.grid img {
  width: 100%; display: block; border-radius: 10px;
  border: 1px solid var(--line); background: #eee;
}
.grid.small img { cursor: zoom-in; }
/* 多张任务：缩略图并排（1 张时占满，和以前一致） */
.grid.small .thumbs { display: flex; flex-wrap: wrap; gap: 4px; }
.grid.small .thumbs img { flex: 1 1 calc(50% - 2px); min-width: 0; }
.grid.small .thumbs img:only-child { flex: 1 1 100%; }
.grid figcaption {
  font-size: 12px; color: var(--muted); margin-top: 6px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.hist { margin-top: 36px; }
.hist h2 { margin-bottom: 12px; }
.empty { color: var(--muted); font-size: 14px; }

/* ---------- 用户栏 / 登录弹窗 ---------- */
.hd { position: relative; }
.userbox {
  position: absolute; top: 0; right: 0;
  display: flex; align-items: center; gap: 10px;
}
.userbox .uname { font-size: 14px; font-weight: 500; }
.userbox .balance {
  font-style: normal; font-size: 12px; color: var(--accent);
  background: var(--accent-soft); border-radius: 999px;
  padding: 3px 10px; cursor: help; white-space: nowrap;
}
.btn.small { font-size: 13px; padding: 6px 14px; border-radius: 8px; }
.btn.ghost.small { border: 1px solid var(--line); color: var(--muted); padding: 5px 12px; }
.btn.ghost.small:hover { color: var(--accent); border-color: #cfe0fb; }

.mask {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(31, 31, 29, 0.42);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
/* ---------- 积分中心（卡密兑换） ---------- */
.wallet {
  width: 380px; max-width: 100%;
  background: var(--card); border-radius: 16px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18); overflow: hidden;
}
.wallet-hd {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 16px 20px; border-bottom: 1px solid var(--line);
}
.wallet-hd h2 { font-size: 17px; }
.wallet-hd .icon-btn {
  width: 30px; height: 30px; font-size: 20px; line-height: 1;
  border: none; border-radius: 9px; background: #f4f3f0; color: var(--muted); cursor: pointer;
}
.wallet-body { padding: 18px 20px 22px; }
.wb-top { display: flex; align-items: baseline; justify-content: space-between; }
.wb-balance { display: flex; align-items: baseline; gap: 5px; }
.wb-balance b { font-size: 28px; font-weight: 600; letter-spacing: -0.02em; }
.wb-balance em { font-style: normal; font-size: 13px; color: var(--muted); }
.wb-cny { font-size: 13px; color: var(--muted); }
.wb-sum {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
  margin: 14px 0 18px; padding: 12px 14px;
  background: #f7f6f4; border-radius: 12px;
}
.wb-sum div { display: flex; flex-direction: column; gap: 3px; }
.wb-sum span { font-size: 12px; color: var(--muted); }
.wb-sum b { font-size: 15px; font-weight: 500; }
.wb-redeem label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 7px; }
.redeem-row { display: flex; gap: 8px; }
.redeem-row input {
  flex: 1; min-width: 0; font: inherit; font-size: 13.5px; letter-spacing: 0.02em;
  border: 1px solid var(--line); border-radius: 9px; padding: 8px 11px;
  color: var(--text); background: #fff; outline: none;
}
.redeem-row input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.redeem-msg { margin: 8px 0 0; font-size: 13px; }
.redeem-msg.ok { color: #15803d; }
.redeem-msg.err { color: var(--danger); }

.auth-card {
  width: 340px; max-width: 100%;
  background: var(--card); border-radius: 16px;
  padding: 22px; box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18);
  display: flex; flex-direction: column; gap: 12px;
}
.auth-card h2 { font-size: 18px; }
.auth-tip { margin: 0; font-size: 13px; color: var(--muted); }
.tabs { display: flex; gap: 6px; background: #f4f3f0; border-radius: 10px; padding: 4px; }
.tab {
  flex: 1; font: inherit; font-size: 14px;
  border: none; background: transparent; color: var(--muted);
  border-radius: 8px; padding: 7px 0; cursor: pointer;
}
.tab.on { background: #fff; color: var(--text); font-weight: 500; box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08); }
.fld.col { flex-direction: column; align-items: stretch; gap: 5px; }
.fld.col input {
  font: inherit; font-size: 14px;
  border: 1px solid var(--line); border-radius: 8px;
  padding: 9px 10px; outline: none; background: #fcfcfb;
}
.fld.col input:focus { border-color: var(--accent); background: #fff; }
.auth-err {
  margin: 0; font-size: 13px; color: var(--danger);
  background: #fdecea; border-radius: 8px; padding: 8px 10px;
}
.btn.wide { width: 100%; }
.auth-card .ghost { border: 1px solid var(--line); color: var(--muted); font-size: 13px; padding: 8px; }
.auth-card .ghost:hover { color: var(--accent); }

@media (max-width: 560px) {
  .userbox { position: static; margin-top: 10px; }
}

/* ---------- 参考图上传 ---------- */
.refbar { display: flex; align-items: center; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
.ref-btn {
  font: inherit; font-size: 13px; color: var(--muted);
  background: #f4f3f0; border: 1px dashed #d5d2cb;
  border-radius: 8px; padding: 6px 12px; cursor: pointer;
}
.ref-btn:hover { color: var(--accent); border-color: #9dc0f7; background: var(--accent-soft); }
.ref-btn:disabled { opacity: .5; cursor: default; color: var(--muted); border-color: #e2e0da; background: #f7f6f3; }
.ref-tip { font-size: 12px; color: var(--muted); }
.ref-tip.warn { color: var(--danger); }
/* 多张参考图：缩略图横排自动换行，每张各自带删除按钮 */
.ref-box { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ref-item { position: relative; display: inline-flex; }
.ref-item img {
  width: 54px; height: 54px; object-fit: cover;
  border-radius: 8px; border: 1px solid var(--line); background: #eee;
}
.ref-clear {
  position: absolute; top: -7px; right: -7px;
  width: 18px; height: 18px; border-radius: 50%;
  border: none; background: rgba(31, 31, 29, 0.72); color: #fff;
  font-size: 12px; line-height: 18px; padding: 0; cursor: pointer;
}
.ref-clear:hover { background: var(--danger); }
.panel.dragover { border-color: var(--accent); background: #fbfdff; }

.ft { margin-top: 48px; text-align: center; color: var(--muted); font-size: 13px; }
.hidden { display: none !important; }