/* Snap2Excel Pro — mobile first, no build */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --danger: #dc2626;
  --ok: #16a34a;
  --radius: 14px;
  --maxw: 560px;
  --tap: 48px; /* minimum touch target */
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
}
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 56px; gap: 8px;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 17px; }
.brand-logo { color: var(--primary); }
.top-actions { display: flex; align-items: center; gap: 8px; }
.credits-pill {
  border: 1px solid var(--border); background: #eff6ff; color: var(--primary-dark);
  border-radius: 999px; padding: 8px 12px; font-size: 14px; font-weight: 600;
  min-height: 36px; cursor: pointer;
}

/* ---------- nav ---------- */
.mainnav { background: var(--card); border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; gap: 4px; overflow-x: auto; padding: 8px 16px; }
.nav-link {
  flex: 1 0 auto; text-align: center; text-decoration: none; color: var(--muted);
  font-size: 14px; font-weight: 600; padding: 10px 14px; border-radius: 10px; white-space: nowrap;
}
.nav-link.active { background: #eff6ff; color: var(--primary-dark); }

/* ---------- main ---------- */
.view { padding: 16px 16px 48px; min-height: 60vh; }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; margin-bottom: 16px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .04);
}
.card-flat { border: 1px solid var(--border); border-radius: 12px; padding: 14px; margin-bottom: 12px; }
h2 { margin: 0 0 8px; font-size: 20px; }
h3 { margin: 20px 0 10px; font-size: 16px; }
.center { text-align: center; }
.small { font-size: 13px; }
.muted { color: var(--muted); }
.err { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; border-radius: 10px; padding: 10px 12px; margin: 12px 0; font-size: 14px; }
.err-text { color: var(--danger); }
.big-emoji { font-size: 44px; margin-bottom: 8px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }

/* ---------- forms & buttons ---------- */
.field { display: block; margin: 12px 0; }
.field > span, .field-label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.field input, .field select {
  width: 100%; min-height: var(--tap); font-size: 16px;
  border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; background: #fff;
}
.field input:focus, .field select:focus { outline: 2px solid var(--primary); border-color: var(--primary); }
.btn {
  display: inline-block; border: 1px solid var(--border); background: #fff; color: var(--text);
  border-radius: 10px; padding: 10px 16px; font-size: 15px; font-weight: 600;
  min-height: var(--tap); cursor: pointer; text-decoration: none; text-align: center;
}
.btn:active { transform: scale(.98); }
.btn:disabled { opacity: .55; cursor: default; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:active { background: var(--primary-dark); }
.btn-block { display: block; width: 100%; }
.btn-lg { font-size: 17px; padding: 14px 16px; }
.btn-sm { min-height: 36px; padding: 6px 12px; font-size: 13px; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--primary-dark); }
.btn-ghost.danger { color: var(--danger); }
.row { display: flex; align-items: center; }
.gap { gap: 8px; }
.between { justify-content: space-between; }
.flex1 { flex: 1; }

/* segmented choice */
.seg { display: flex; gap: 6px; }
.seg-wrap { flex-wrap: wrap; }
.seg-btn {
  flex: 1; min-height: var(--tap); border: 1px solid var(--border); background: #fff;
  border-radius: 10px; font-size: 14px; font-weight: 600; color: var(--muted);
  padding: 10px 6px; cursor: pointer; min-width: 0;
}
.seg-wrap .seg-btn { flex: 1 1 30%; }
.seg-btn.active { border-color: var(--primary); color: var(--primary-dark); background: #eff6ff; }

/* file list */
.file-list { margin: 12px 0; }
.file-list-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.file-list ul { list-style: none; margin: 0; padding: 0; }
.file-list li {
  display: flex; justify-content: space-between; align-items: center;
  border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; margin-bottom: 6px;
  background: #f8fafc; font-size: 14px;
}
.fname { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 70%; }

/* result */
.result { border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-top: 16px; text-align: center; }
.result.ok { background: #f0fdf4; border-color: #bbf7d0; }
.result h3 { margin: 4px 0 8px; }

/* history */
.hist { list-style: none; margin: 0; padding: 0; }
.hist-item {
  display: flex; align-items: center; gap: 10px;
  border: 1px solid var(--border); border-radius: 12px; padding: 12px; margin-bottom: 10px;
}
.hist-main { flex: 1; min-width: 0; }
.badge { font-size: 12px; font-weight: 700; border-radius: 999px; padding: 4px 10px; white-space: nowrap; }
.badge.ok { background: #dcfce7; color: #166534; }
.badge.bad { background: #fee2e2; color: #991b1b; }
.empty { text-align: center; padding: 24px 8px; }

/* billing */
.balance-card {
  background: linear-gradient(135deg, #2563eb, #1e40af); color: #fff;
  border-radius: var(--radius); padding: 20px; margin: 12px 0 8px;
}
.balance-num { font-size: 32px; font-weight: 800; }
.plan { display: flex; align-items: center; gap: 12px; }
.plan-info { flex: 1; }
.plan-price { font-size: 20px; font-weight: 800; color: var(--primary-dark); margin-top: 4px; }

/* dev keys */
.keys { list-style: none; margin: 0; padding: 0; }
.key-item { display: flex; align-items: flex-start; gap: 10px; border: 1px solid var(--border); border-radius: 12px; padding: 12px; margin-bottom: 10px; }
.key-main { flex: 1; min-width: 0; }
.key-plain {
  display: block; word-break: break-all; background: #f8fafc;
  border: 1px dashed var(--border); border-radius: 10px; padding: 12px; margin: 12px 0;
}

/* admin */
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.stat { border: 1px solid var(--border); border-radius: 12px; padding: 14px; background: #f8fafc; }
.stat-num { font-size: 26px; font-weight: 800; color: var(--primary-dark); }
.stat-label { font-size: 13px; color: var(--muted); }

/* modal & toast */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(15, 23, 42, .5);
  display: flex; align-items: center; justify-content: center; padding: 20px; z-index: 50;
}
.modal { max-width: 420px; width: 100%; margin: 0; }
#toast-root { position: fixed; bottom: calc(24px + env(safe-area-inset-bottom)); left: 0; right: 0; display: flex; flex-direction: column; align-items: center; gap: 8px; z-index: 60; pointer-events: none; }
.toast {
  background: #0f172a; color: #fff; border-radius: 10px; padding: 12px 18px;
  font-size: 14px; max-width: 90vw; opacity: 0; transform: translateY(8px); transition: all .25s;
}
.toast.show { opacity: 1; transform: none; }
.toast-error { background: #991b1b; }

/* spinner */
.spinner {
  width: 36px; height: 36px; margin: 24px auto;
  border: 4px solid var(--border); border-top-color: var(--primary);
  border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* upload progress bar (async jobs) */
.progress { height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; margin: 12px 0 4px; }
.progress-bar { height: 100%; width: 0; background: var(--primary); border-radius: 4px; transition: width 0.3s ease; }

/* footer */
.footer { border-top: 1px solid var(--border); padding: 16px 0 calc(24px + env(safe-area-inset-bottom)); color: var(--muted); font-size: 12px; text-align: center; }

/* desktop: center the column */
@media (min-width: 640px) {
  body { display: flex; flex-direction: column; }
  .topbar-inner, .nav-inner, .view, .footer .container { max-width: var(--maxw); }
  .topbar .container, .footer .container { width: 100%; }
}

/* 商品管理 / 兑换交付 */
.prod { border: 1px solid var(--line, #e5e7eb); border-radius: 12px; padding: 12px; margin: 10px 0; }
.prod-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 8px; }
.num-sm { width: 64px; min-height: 36px; border: 1px solid var(--line, #e5e7eb); border-radius: 8px; padding: 4px 8px; font-size: 14px; }
.badge { background: #e0e7ff; color: #3730a3; }
.keys-out textarea { width: 100%; font-family: ui-monospace, monospace; font-size: 12px; margin: 8px 0; }
.deliver-text { white-space: pre-wrap; word-break: break-word; background: #f8fafc; border: 1px solid var(--line, #e5e7eb); border-radius: 12px; padding: 14px; font-size: 14px; max-height: 50vh; overflow: auto; margin: 12px 0; }