/* 求原图 · Product 用户前台样式（自包含，无第三方字体 / 框架） */

:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --border: #e4e7ec;
  --text: #1a1d23;
  --text-dim: #5c6470;
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --ok: #15803d;
  --warn: #b45309;
  --err: #b91c1c;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 4px 12px rgba(16, 24, 40, 0.06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

.wrap {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  font-size: 18px;
}
.brand-mark { color: var(--brand); }
.topnav { display: flex; gap: 4px; }
.navlink {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-dim);
  font: inherit;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  min-height: 36px;
}
.navlink:hover { background: #f1f3f7; color: var(--text); }
.navlink:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; }

/* ---------- 首页 ---------- */
.hero { padding: 40px 0 8px; }
.hero h1 {
  font-size: clamp(24px, 5vw, 34px);
  line-height: 1.25;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.lead { color: var(--text-dim); margin: 0 0 24px; }

.paste {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px;
}
.paste textarea {
  width: 100%;
  border: 0;
  resize: vertical;
  min-height: 88px;
  font: inherit;
  font-size: 15px;
  color: var(--text);
  background: transparent;
  padding: 8px;
}
.paste textarea:focus { outline: none; }
.paste:focus-within { border-color: var(--brand); }
.paste-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.btn {
  appearance: none;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  padding: 10px 18px;
  min-height: 44px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}
.btn.primary { background: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-dark); }
.btn.ghost { background: transparent; color: var(--text-dim); border-color: var(--border); }
.btn.ghost:hover { background: #f1f3f7; color: var(--text); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

.status {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 15px;
}
.status[data-kind="loading"] { border-color: #bfdbfe; background: #eff6ff; color: var(--brand-dark); }
.status[data-kind="error"] { border-color: #fecaca; background: #fef2f2; color: var(--err); }
.status[data-kind="ok"] { border-color: #bbf7d0; background: #f0fdf4; color: var(--ok); }
.status[data-kind="info"] { border-color: #fde68a; background: #fffbeb; color: var(--warn); }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  list-style: none;
  counter-reset: step;
  margin: 28px 0 0;
  padding: 0;
}
.steps li {
  counter-increment: step;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  font-size: 14px;
  color: var(--text-dim);
  position: relative;
}
.steps li::before {
  content: counter(step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 8px;
}
.steps li b { color: var(--text); }

/* ---------- 解析结果 ---------- */
.result { padding: 24px 0 48px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}
.card + .card { margin-top: 12px; }
.result-title { font-size: 18px; font-weight: 700; margin: 0 0 4px; word-break: break-word; }
.result-meta { color: var(--text-dim); font-size: 14px; margin: 0 0 16px; }
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: #f1f3f7;
  color: var(--text-dim);
  margin-left: 8px;
  vertical-align: middle;
}
.media-group { margin-top: 14px; }
.media-group h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
  margin: 0 0 8px;
  text-transform: none;
}
.media-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.media-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: #fcfcfd;
}
.media-name { font-size: 14px; word-break: break-all; }
.media-name .kind { color: var(--text-dim); font-size: 12px; margin-right: 6px; }
.btn.small { padding: 7px 14px; min-height: 36px; font-size: 14px; }
.result-note { color: var(--text-dim); font-size: 13px; margin: 14px 0 0; }

/* ---------- 弹窗 ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(16, 24, 40, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow-y: auto;
}
.modal-backdrop[hidden] { display: none; }
.modal {
  background: var(--surface);
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(16, 24, 40, 0.18);
  width: 100%;
  max-width: 460px;
  padding: 22px;
}
.modal h2 { font-size: 19px; margin: 0 0 6px; }
.modal-desc { color: var(--text-dim); font-size: 14px; margin: 0 0 16px; }
.modal-note { color: var(--text-dim); font-size: 12px; margin: 14px 0 0; }
.modal-error {
  color: var(--err);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
  margin: 12px 0 0;
}
.modal-error[hidden] { display: none; }
.modal-body { font-size: 14px; }
.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 18px;
  flex-wrap: wrap;
}

#license-input {
  width: 100%;
  font: inherit;
  font-size: 15px;
  letter-spacing: 0.06em;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  min-height: 44px;
}
#license-input:focus { outline: none; border-color: var(--brand); }

/* ---------- 我的卡密 ---------- */
.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; margin: 0; }
.kv dt { color: var(--text-dim); }
.kv dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; word-break: break-all; }
.kv dd.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: 0.08em; }
.kv dd.ok { color: var(--ok); font-weight: 600; }
.kv dd.err { color: var(--err); font-weight: 600; }
.kv dd.warn { color: var(--warn); font-weight: 600; }
.history { list-style: none; margin: 10px 0 0; padding: 0; }
.history li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
  padding: 7px 0;
}
.history li span:first-child { word-break: break-all; }
.plans-list { margin: 0; padding-left: 18px; }
.plans-list li { margin-bottom: 6px; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--border); padding: 22px 0 34px; margin-top: 24px; }
.footer-inner { color: var(--text-dim); font-size: 13px; }
.footer-inner p { margin: 0 0 6px; }
.footer-links { display: flex; gap: 8px; align-items: center; }
.linklike {
  appearance: none;
  background: none;
  border: 0;
  padding: 4px 2px;
  font: inherit;
  font-size: 13px;
  color: var(--brand);
  cursor: pointer;
  text-decoration: underline;
  min-height: 32px;
}
.linklike:hover { color: var(--brand-dark); }

/* ---------- 手机布局 ---------- */
@media (max-width: 600px) {
  .hero { padding: 24px 0 4px; }
  .steps { grid-template-columns: 1fr; }
  .media-row { flex-direction: column; align-items: stretch; }
  .media-row .btn { width: 100%; }
  .modal { padding: 18px; }
  .topbar-inner { height: 52px; }
  .navlink { padding: 6px 8px; font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}