:root {
  --green: #16a34a;
  --green-dark: #15803d;
  --green-light: #dcfce7;
  --green-lighter: #f0fdf4;
  --amber: #d97706;
  --amber-light: #fef3c7;
  --red: #dc2626;
  --red-light: #fee2e2;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #f6f8f7;
  --card: #ffffff;
  --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.5;
}
.hidden { display: none !important; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 15px; color: var(--text); }

/* 顶栏 */
.topbar { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; }
.brand { font-size: 17px; font-weight: 700; padding: 12px 16px 4px; }
.tabs { display: flex; overflow-x: auto; padding: 4px 8px 0; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tabs button {
  border: none; background: none; padding: 8px 12px; font-size: 14px; color: var(--muted);
  border-bottom: 2px solid transparent; white-space: nowrap; flex-shrink: 0;
}
.tabs button.active { color: var(--green); border-bottom-color: var(--green); font-weight: 600; }

main { max-width: 760px; margin: 0 auto; padding: 14px 12px 80px; }
.card { background: var(--card); border-radius: var(--radius); padding: 14px; margin-bottom: 12px; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.card h3 { font-size: 15px; margin-bottom: 10px; display: flex; align-items: center; justify-content: space-between; }
.card h3 .tag { font-size: 12px; font-weight: 400; color: var(--muted); }
.muted { color: var(--muted); font-size: 13px; }
.row { display: flex; gap: 8px; align-items: center; }
.row > * { flex: 1; min-width: 0; }
.btn {
  border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 8px 14px;
  font-size: 14px; color: var(--text); flex: none;
}
.btn-primary { background: var(--green); border-color: var(--green); color: #fff; font-weight: 600; }
.btn-primary:active { background: var(--green-dark); }
.btn-danger { color: var(--red); border-color: #fecaca; background: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.input, select.input, textarea.input {
  border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; width: 100%;
  background: #fff; outline: none;
}
.input:focus { border-color: var(--green); }
textarea.input { resize: vertical; min-height: 60px; }

/* 登录门 */
.gate { position: fixed; inset: 0; background: var(--bg); display: flex; align-items: center; justify-content: center; z-index: 100; }
.gate-card { background: var(--card); border-radius: 18px; padding: 32px 24px; text-align: center; max-width: 320px; box-shadow: 0 4px 24px rgba(0,0,0,.08); }
.gate-icon { font-size: 44px; margin-bottom: 8px; }
.gate-card h2 { font-size: 18px; margin-bottom: 8px; }
.gate-card p { color: var(--muted); font-size: 14px; }

/* 今日页 */
.summary { display: flex; align-items: center; justify-content: space-between; padding: 4px 2px 10px; }
.summary .big { font-size: 26px; font-weight: 800; }
.summary .big small { font-size: 13px; font-weight: 400; color: var(--muted); }
.bar { height: 8px; background: var(--green-light); border-radius: 99px; overflow: hidden; margin-bottom: 4px; }
.bar > div { height: 100%; background: var(--green); border-radius: 99px; transition: width .3s; }
.bar.over > div { background: var(--amber); }
.meal-head { display: flex; align-items: center; justify-content: space-between; }
.meal-head .icon { font-size: 18px; }
.meal-sub { font-weight: 700; color: var(--green); font-size: 14px; }
.add-row { display: flex; gap: 6px; align-items: center; }
.add-row .food-cell { flex: 2; position: relative; }
.add-row .amt-cell { flex: 1; }
.add-row .kcal-cell { flex: 0 0 74px; text-align: center; }
.add-row .kcal-cell b { color: var(--green); font-size: 15px; }
.add-row .kcal-cell small { display: block; color: var(--muted); font-size: 11px; }
.add-row select.unit { padding: 8px 4px; }
.entry-list { margin-top: 10px; display: flex; flex-direction: column; gap: 6px; }
.entry {
  display: flex; align-items: center; gap: 8px; background: var(--green-lighter);
  border-radius: 10px; padding: 8px 10px; font-size: 14px;
}
.entry .name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.entry .amt { color: var(--muted); font-size: 12px; flex: none; }
.entry .kcal { font-weight: 700; color: var(--green); flex: none; }
.entry .del { border: none; background: none; color: #9ca3af; font-size: 16px; padding: 2px 6px; flex: none; }
.entry .del:active { color: var(--red); }
.suggest { position: absolute; top: 100%; left: 0; right: 0; background: #fff; border: 1px solid var(--line);
  border-radius: 10px; max-height: 220px; overflow-y: auto; z-index: 30; box-shadow: 0 6px 20px rgba(0,0,0,.1); }
.suggest div { padding: 8px 10px; cursor: pointer; font-size: 14px; display: flex; justify-content: space-between; }
.suggest div:active, .suggest div.hover { background: var(--green-light); }
.suggest div small { color: var(--muted); }
.ai-box textarea { min-height: 56px; }
.ai-box .hint { color: var(--muted); font-size: 12px; margin-top: 6px; }

/* 表格 */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 7px 6px; text-align: center; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; background: var(--green-lighter); }
td.hit { color: var(--green); font-weight: 600; }
td.over { color: var(--amber); font-weight: 600; }
.table-wrap { overflow-x: auto; margin: 0 -4px; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 12px; }
.stat { background: var(--card); border-radius: 12px; padding: 10px 8px; text-align: center; }
.stat b { display: block; font-size: 18px; color: var(--green); }
.stat span { font-size: 12px; color: var(--muted); }

/* 表单 */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form-item label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.form-item input, .form-item select { width: 100%; }

/* 备忘 */
.note { display: flex; gap: 8px; align-items: flex-start; background: #fff; border: 1px solid var(--line);
  border-radius: 10px; padding: 10px; margin-bottom: 8px; }
.note .body { flex: 1; min-width: 0; }
.note .meta { font-size: 12px; color: var(--muted); margin-bottom: 2px; }
.note .meta b { color: var(--green); font-weight: 600; margin-right: 6px; }
.note .content { font-size: 14px; white-space: pre-wrap; word-break: break-word; }
.note .ops { display: flex; flex-direction: column; gap: 4px; }
.note .ops button { border: 1px solid var(--line); background: #fff; border-radius: 8px; font-size: 12px; padding: 3px 8px; }

/* 设置 */
.setting-item { margin-bottom: 12px; }
.setting-item label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.link-box { background: var(--green-lighter); border: 1px dashed var(--green); border-radius: 10px;
  padding: 10px; font-size: 13px; word-break: break-all; color: var(--green-dark); }
.file-row { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); padding: 9px 2px; }
.file-row:last-child { border-bottom: none; }
.file-row b { font-size: 14px; }
.file-row .ops { display: flex; gap: 8px; }

/* 弹窗与提示 */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: flex; align-items: center; justify-content: center; z-index: 60; padding: 20px; }
.modal-box { background: #fff; border-radius: 16px; max-width: 560px; width: 100%; max-height: 80vh; overflow-y: auto; padding: 18px; }
.modal-box h3 { font-size: 16px; margin-bottom: 10px; }
.modal-box pre { background: #f8fafc; border-radius: 10px; padding: 12px; font-size: 12.5px; white-space: pre-wrap; word-break: break-word; max-height: 60vh; overflow-y: auto; }
.toast { position: fixed; left: 50%; bottom: 40px; transform: translateX(-50%); background: rgba(17,24,39,.92);
  color: #fff; padding: 10px 18px; border-radius: 99px; font-size: 14px; z-index: 80; max-width: 90vw; }

/* AI 确认列表 */
.ai-confirm { display: flex; flex-direction: column; gap: 6px; margin: 10px 0; }
.ai-confirm label { display: flex; gap: 8px; align-items: center; background: var(--green-lighter); border-radius: 10px; padding: 8px 10px; font-size: 14px; }
.ai-confirm .n { flex: 1; }
.ai-confirm .k { color: var(--green); font-weight: 700; }

@media (max-width: 420px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
}