:root {
  --bg: #fbf7f4;
  --card: #ffffff;
  --ink: #2b2622;
  --muted: #8a8079;
  --line: #ece3dc;
  --brand: #c98a8a;      /* 暖玫瑰 */
  --brand2: #6c8ebf;     /* 科技蓝 */
  --brand-soft: #f6e9e9;
  --ok: #5b8a6b;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

.hero {
  text-align: center;
  padding: 38px 20px 26px;
  background: linear-gradient(135deg, #fbeeed 0%, #eef3f8 100%);
}
.hero h1 { margin: 0 0 8px; font-size: 30px; letter-spacing: 1px; }
.hero .sub { margin: 0; color: var(--muted); }
.badge {
  display: inline-block; margin-top: 14px; padding: 5px 14px;
  border-radius: 999px; font-size: 13px; background: var(--brand-soft); color: var(--brand);
  border: 1px solid var(--line);
}

.wrap { max-width: 880px; margin: 0 auto; padding: 20px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 22px; margin-bottom: 18px; box-shadow: 0 6px 20px rgba(0,0,0,.03);
}
.card h2 { margin: 0 0 16px; font-size: 18px; }

.upload-row { display: flex; gap: 16px; flex-wrap: wrap; }
.drop { flex: 1 1 240px; cursor: pointer; }
.preview {
  border: 2px dashed var(--line); border-radius: 14px; min-height: 220px;
  display: flex; align-items: center; justify-content: center; color: var(--muted);
  background: #fafafa; overflow: hidden; transition: .2s;
}
.preview:hover { border-color: var(--brand); }
.preview img { width: 100%; height: 100%; object-fit: cover; display: block; }
.preview span { font-size: 15px; }
.tip { color: var(--muted); font-size: 13px; margin: 12px 0 0; }

.styles { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 9px 16px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; cursor: pointer; font-size: 14px; transition: .15s; user-select: none;
}
.chip:hover { border-color: var(--brand2); }
.chip.active { background: var(--brand); color: #fff; border-color: var(--brand); }

/* 模型引擎切换（分段按钮） */
.provider-toggle { display: flex; gap: 12px; flex-wrap: wrap; }
.seg-btn {
  flex: 1 1 220px; text-align: left; cursor: pointer;
  border: 1px solid var(--line); border-radius: 14px; background: #fff;
  padding: 14px 16px; transition: .18s; font-family: inherit; color: var(--ink);
}
.seg-btn strong { display: block; font-size: 15px; font-weight: 600; }
.seg-btn span { display: block; font-size: 12px; color: var(--muted); margin-top: 2px; }
.seg-btn:hover:not(:disabled) { border-color: var(--brand2); }
.seg-btn.active {
  border-color: var(--brand); background: var(--brand-soft);
  box-shadow: 0 6px 16px rgba(201,138,138,.18);
}
.seg-btn.active span { color: var(--brand); }
.seg-btn:disabled { opacity: .5; cursor: not-allowed; background: #f7f5f3; }

/* 免费额度展示 */
.quota { margin-top: 14px; }
.quota[hidden] { display: none; }
.quota-bar {
  height: 8px; border-radius: 999px; background: #f0ece8; overflow: hidden;
}
.quota-bar i {
  display: block; height: 100%; width: 0; border-radius: 999px;
  background: linear-gradient(90deg, var(--brand), var(--brand2)); transition: width .3s;
}
.quota-text {
  display: block; margin-top: 6px; font-size: 12px; color: var(--muted); line-height: 1.5;
}

.extra { display: block; margin-top: 16px; }
.extra span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.extra textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 10px;
  resize: vertical; font-family: inherit; font-size: 14px;
}

.actions { display: flex; align-items: center; gap: 16px; }
#genBtn {
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  color: #fff; border: none; padding: 12px 26px; border-radius: 12px;
  font-size: 16px; cursor: pointer; transition: .2s; box-shadow: 0 8px 18px rgba(108,142,191,.25);
}
#genBtn:disabled { opacity: .45; cursor: not-allowed; box-shadow: none; }
#genBtn:not(:disabled):hover { transform: translateY(-1px); }
.status { color: var(--muted); font-size: 14px; }

.result-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.result-item { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #fff; }
.result-item img { width: 100%; display: block; }
.result-meta { padding: 10px 12px; }
.result-meta .tag {
  display: inline-block; font-size: 12px; padding: 2px 10px; border-radius: 999px;
  background: var(--brand-soft); color: var(--brand); margin-bottom: 6px;
}
.result-meta .tag.engine { background: #eaf0f8; color: var(--brand2); margin-left: 6px; }
.result-meta .mock { color: #b07a2a; font-size: 12px; }
.result-meta a { font-size: 13px; color: var(--brand2); text-decoration: none; }
.result-meta a:hover { text-decoration: underline; }

.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 24px; }