/* wan-image 纯色皮肤：深墨蓝 + 米白卡片，无渐变无毛玻璃 */
:root {
  --ink: #1f2a3c;        /* 主色：深墨蓝 */
  --ink-2: #34455e;      /* 次级 */
  --paper: #f7f4ee;      /* 米白背景 */
  --card: #ffffff;       /* 卡片 */
  --line: #e3ded4;       /* 描边 */
  --accent: #b5562a;     /* 砖红点缀（生成按钮/徽标） */
  --free: #2e7d4f;       /* 免费额度绿 */
  --warn: #a33a3a;
  --txt: #26221b;
  --txt-2: #7d766a;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--paper); color: var(--txt); font: 14px/1.65 "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; }
.hidden { display: none !important; }
button { cursor: pointer; font: inherit; }
input, textarea, select { font: inherit; color: inherit; }
textarea { resize: vertical; }

/* ── 登录屏 ── */
.login-mask { position: fixed; inset: 0; background: var(--ink); display: flex; align-items: center; justify-content: center; z-index: 50; }
.login-card { background: var(--card); border-radius: 14px; padding: 40px 44px; width: min(92vw, 380px); text-align: center; }
.login-card h2 { color: var(--ink); font-size: 19px; margin-bottom: 6px; }
.login-sub { color: var(--txt-2); margin-bottom: 22px; }
.login-card input { width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 12px; background: var(--paper); }
/* 登录验证码行：左图右输入框，口令错一次后才显示 */
.cap-row { display: flex; gap: 8px; align-items: stretch; margin-bottom: 12px; }
#capBox { flex-shrink: 0; cursor: pointer; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; line-height: 0; background: var(--paper); }
#capBox svg { display: block; }
.cap-row input { width: 0; flex: 1; margin-bottom: 0; }
.login-card .btn-primary { width: 100%; }
.pw-err { color: var(--warn); min-height: 20px; margin-top: 10px; }

/* ── 顶栏 ── */
.topbar { display: flex; align-items: center; gap: 18px; padding: 0 22px; height: 56px; background: var(--ink); color: #f0ede6; position: sticky; top: 0; z-index: 20; }
.brand { font-weight: 700; font-size: 16px; letter-spacing: .5px; }
.brand-sub { font-weight: 400; font-size: 12px; opacity: .75; margin-left: 4px; }
.tabs { display: flex; gap: 4px; }
.tab { background: transparent; border: 0; color: #cfd6e0; padding: 8px 16px; border-radius: 8px; font-size: 14px; white-space: nowrap; }
.tab:hover { background: var(--ink-2); }
.tab.active { background: #f0ede6; color: var(--ink); font-weight: 600; }
.top-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.top-right select { background: var(--ink-2); color: #f0ede6; border: 1px solid #4a5c78; border-radius: 8px; padding: 6px 8px; max-width: 360px; }
.guard-info { font-size: 12px; opacity: .8; }
.btn-ghost { background: transparent; border: 1px solid var(--line); color: var(--ink-2); border-radius: 8px; padding: 6px 12px; }
.topbar .btn-ghost { border-color: #4a5c78; color: #cfd6e0; white-space: nowrap; font-size: 12px; padding: 4px 10px; }
.btn-ghost.small { padding: 4px 10px; font-size: 12px; }
.btn-primary { background: var(--accent); border: 0; color: #fff; border-radius: 8px; padding: 9px 22px; font-weight: 600; white-space: nowrap; } /* 横排不换行：窄屏下「生成」不再被挤成竖排 */
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

/* ── 主体 ── */
main { max-width: 980px; margin: 0 auto; padding: 34px 20px 80px; }
.hero { font-size: 27px; color: var(--ink); margin: 8px 2px 18px; font-weight: 700; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; }
.input-card { padding: 16px; }
#promptInput { width: 100%; border: 0; outline: none; background: transparent; font-size: 15px; color: var(--txt); }
#promptInput::placeholder { color: #b3ab9d; }

/* 图片附件位 */
.imgbox { border: 1px dashed var(--line); border-radius: 10px; padding: 10px 12px; margin: 10px 0; background: var(--paper); }
.imgbox.dragover { border-color: var(--accent); }
.imgbox-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
#imgHint { font-size: 13px; color: var(--ink-2); font-weight: 600; }
.img-thumbs { display: flex; gap: 8px; flex-wrap: wrap; }
.thumb { position: relative; width: 72px; height: 72px; border-radius: 8px; overflow: hidden; border: 1px solid var(--line); background: var(--card); }
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb .rm { position: absolute; top: 2px; right: 2px; width: 18px; height: 18px; border-radius: 50%; border: 0; background: var(--ink); color: #fff; font-size: 11px; line-height: 18px; padding: 0; }
.img-tip { font-size: 11px; color: var(--txt-2); margin-top: 6px; }
.url-input { width: 100%; margin-top: 6px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); }

/* 规格 chips */
.chips { display: flex; flex-wrap: wrap; gap: 14px; margin: 12px 0 4px; align-items: center; }
.chip-group { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.chip-label { font-size: 12px; color: var(--txt-2); }
.chip { border: 1px solid var(--line); background: var(--card); color: var(--txt); border-radius: 999px; padding: 3px 12px; font-size: 12.5px; }
.chip.on { background: var(--ink); border-color: var(--ink); color: #fff; }
.chip .exp { color: var(--warn); font-size: 11px; margin-left: 2px; }
.chip.on .exp { color: #ffd9c2; }
.chip-switch { opacity: .9; }
.chip-switch.on { background: var(--free); border-color: var(--free); }
.chip-act { cursor: pointer; border-color: var(--ink); color: var(--ink); font-weight: 600; }
.chip-act:hover { background: var(--ink); color: #fff; }

/* 时长滑条（连续区间模型） */
.dur-slide input[type="range"] { width: 180px; accent-color: var(--ink); cursor: pointer; }
.dur-slide .dur-val { font-size: 12.5px; font-weight: 600; color: var(--ink); min-width: 34px; }

/* 运行行 */
.run-row { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
.est { font-size: 13px; color: var(--ink-2); background: var(--paper); border: 1px solid var(--line); border-radius: 999px; padding: 3px 12px; }
.est.free { color: var(--free); border-color: var(--free); }
.gen-status { font-size: 12.5px; color: var(--txt-2); flex: 1; }
.gen-status.err { color: var(--warn); }

/* 结果区 */
.result { margin-top: 22px; display: flex; flex-direction: column; gap: 14px; }
.res-card { padding: 14px; }
.res-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 10px; }
.res-grid figure { position: relative; border-radius: 10px; overflow: hidden; border: 1px solid var(--line); background: var(--paper); }
.res-grid img, .res-card video { width: 100%; display: block; border-radius: 10px; }
.res-meta { display: flex; align-items: center; gap: 10px; margin-top: 8px; font-size: 12px; color: var(--txt-2); flex-wrap: wrap; }
.res-meta .prompt { flex: 1; min-width: 200px; white-space: pre-wrap; word-break: break-all; }
.dl { text-decoration: none; color: var(--ink); border: 1px solid var(--line); border-radius: 6px; padding: 2px 10px; font-size: 12px; background: var(--card); }
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: rot 1s linear infinite; vertical-align: -2px; margin-right: 6px; }
@keyframes rot { to { transform: rotate(360deg); } }

/* 对话 */
.chat-wrap { display: flex; flex-direction: column; height: calc(100vh - 150px); min-height: 420px; }
.chat-head { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); font-size: 13px; color: var(--ink-2); }
.chat-head select { margin-left: auto; border: 1px solid var(--line); border-radius: 8px; padding: 5px 8px; background: var(--paper); max-width: 260px; }
.chat-msgs { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.bubble { max-width: 78%; padding: 10px 14px; border-radius: 12px; white-space: pre-wrap; word-break: break-word; }
.bubble.user { align-self: flex-end; background: var(--ink); color: #f0ede6; }
.bubble.ai { align-self: flex-start; background: var(--paper); border: 1px solid var(--line); }
.bubble.sys { align-self: center; font-size: 12px; color: var(--txt-2); background: none; }
.bubble .b-head { font-size: 11px; color: var(--txt-2); margin-bottom: 4px; }
.bubble.ai .apply { margin-top: 8px; }
.chat-input-row { display: flex; gap: 8px; align-items: flex-end; padding: 8px 16px 12px; }
#chatInput { flex: 1; border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; background: var(--paper); outline: none; line-height: 1.5; resize: none; overflow-y: auto; max-height: calc(6em + 18px); scrollbar-width: none; -ms-overflow-style: none; } /* 自动增高至 4 行（由 JS autoGrowChat 驱动）；无右下角手柄，滚动条默认隐身 */
#chatInput::-webkit-scrollbar { width: 0; height: 0; display: none; }
#chatInput.need-scroll { scrollbar-width: thin; }
#chatInput.need-scroll::-webkit-scrollbar { width: 5px; display: block; }
#chatInput.need-scroll::-webkit-scrollbar-thumb { background: rgba(120, 130, 160, .45); border-radius: 3px; }

/* 花销明细 */
.spend-card { padding: 18px 20px; }
.spend-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.spend-head h3 { color: var(--ink); font-size: 16px; }
.spend-tip { font-size: 12px; color: var(--txt-2); flex: 1; }
/* 免费额度余额：头行最右按钮 + 展开面板 */
#fqBtn { flex-shrink: 0; font-size: 12px; padding: 4px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--paper); color: var(--ink-2); cursor: pointer; white-space: nowrap; }
#fqBtn:hover { border-color: var(--ink); color: var(--ink); }
.fq-card { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px 8px; margin-bottom: 14px; background: var(--card); }
.fq-row { margin-bottom: 12px; }
.fq-row.dim { opacity: .45; }
.fq-top { display: flex; align-items: baseline; gap: 8px; font-size: 13px; color: var(--ink); }
.fq-num { margin-left: auto; font-size: 12px; color: var(--ink-2); white-space: nowrap; }
.fq-bar { height: 6px; border-radius: 3px; background: var(--paper); border: 1px solid var(--line); margin: 5px 0 3px; overflow: hidden; }
.fq-bar i { display: block; height: 100%; border-radius: 3px; background: var(--ink); }
.fq-meta { font-size: 11px; color: var(--txt-2); }
.fq-tag { font-size: 10px; padding: 1px 7px; border-radius: 999px; white-space: nowrap; }
.fq-tag.bad { background: #fdecec; color: var(--warn); }
.fq-tag.warn { background: #fff4e0; color: #b7791f; }
.fq-snap { font-size: 11px; color: var(--txt-2); border-top: 1px dashed var(--line); padding-top: 6px; margin-bottom: 6px; }
.spend-day { border: 1px solid var(--line); border-radius: 10px; margin-bottom: 12px; overflow: hidden; }
.spend-day-head { display: flex; justify-content: space-between; align-items: center; padding: 8px 14px; background: var(--paper); font-size: 13px; color: var(--ink-2); }
.spend-day-head .over { color: var(--warn); font-weight: 600; }
.spend-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.spend-table th, .spend-table td { text-align: left; padding: 6px 14px; border-top: 1px solid var(--line); }
.spend-table th { color: var(--txt-2); font-weight: 400; background: #fbfaf7; }
.spend-table td.free { color: var(--free); font-weight: 600; }

@media (max-width: 720px) {
  .topbar { flex-wrap: wrap; height: auto; padding: 8px 12px; }
  .top-right { width: 100%; flex-wrap: wrap; }
  /* 模型下拉长文本（英文名+单价+免费额度）随屏收缩省略，不再把「退出」挤出屏幕 */
  .top-right select { flex: 1 1 auto; min-width: 0; max-width: calc(100vw - 110px); }
  .guard-info { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  /* 运行行两行布局：预估徽标独占一行，状态+清空+生成第二行横排 */
  .run-row { flex-wrap: wrap; }
  .est { flex: 1 1 100%; }
  .gen-status { min-width: 0; }
  .run-row .btn-ghost, .run-row .btn-primary { flex-shrink: 0; }
  .hero { font-size: 22px; }
  main { padding: 20px 12px 60px; }
}