* { box-sizing: border-box; }
body { font-family: system-ui, sans-serif; margin: 0; background: #f4f6f8; color: #1c2733; }
nav { display: flex; gap: 1.5rem; align-items: center; padding: .8rem 1.2rem; background: #fff; box-shadow: 0 1px 4px rgba(0,0,0,.08); }
.logo { font-weight: 700; text-decoration: none; color: #1c2733; }
nav a { text-decoration: none; color: #1660a8; }
nav a.muted { color: #888; margin-left: auto; }
main { max-width: 760px; margin: 1.5rem auto; padding: 0 1rem; }
h1, h2 { margin-top: 0; }
form { display: flex; flex-direction: column; gap: .8rem; max-width: 380px; }
label { display: flex; flex-direction: column; gap: .3rem; font-size: .9rem; }
input { padding: .55rem .7rem; border: 1px solid #c8d2dc; border-radius: 8px; font-size: 1rem; }
.btn { background: #1660a8; color: #fff; border: 0; border-radius: 8px; padding: .6rem 1.2rem; font-size: 1rem; cursor: pointer; text-decoration: none; text-align: center; }
.btn:hover { background: #0f4d8a; }
.error { color: #b3261e; background: #fdecea; padding: .6rem 1rem; border-radius: 8px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: .8rem; margin: 1rem 0; }
.card { background: #fff; border-radius: 12px; padding: .8rem 1rem; box-shadow: 0 1px 3px rgba(0,0,0,.06); display: flex; flex-direction: column; gap: .3rem; }
.card span { color: #6b7683; font-size: .85rem; }
.card b { font-size: 1.25rem; }
.chart-wrap { background: #fff; border-radius: 12px; padding: 1rem; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.entry-form { flex-direction: row; flex-wrap: wrap; align-items: end; max-width: none; }
.entry-form input { flex: 1 1 130px; }
table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 12px; overflow: hidden; }
th, td { padding: .55rem .8rem; text-align: left; border-bottom: 1px solid #eef1f4; }
td form { display: inline; }
.del { background: none; border: 0; color: #b3261e; cursor: pointer; font-size: 1rem; }
.search-form { display: flex; flex-direction: row; align-items: center; gap: 8px; margin: 12px 0; max-width: 560px; }
.search-form input { flex: 1; }
.calc { display: flex; flex-direction: row; align-items: center; flex-wrap: wrap; gap: 8px; margin: 10px 0; max-width: 560px; }
.calc-out { width: 100%; color: #0a7d33; font-weight: 600; min-height: 1.2em; }
.chk { display: flex; flex-direction: row; align-items: center; gap: 8px; align-self: flex-start; }
.hint { color: #777; font-size: 0.9em; }
.ac-wrap { position: relative; flex: 1 1 auto; min-width: 220px; }
.ac-list { position: absolute; top: 100%; left: 0; right: 0; z-index: 10;
           background: #fff; border: 1px solid #c8d2dc; border-radius: 8px;
           box-shadow: 0 4px 12px rgba(0,0,0,.12); max-height: 240px; overflow-y: auto; }
.ac-list:empty { display: none; }
.ac-item { display: block; width: 100%; text-align: left; padding: .55rem .7rem;
           background: none; border: 0; border-bottom: 1px solid #eef1f4;
           font-size: 1rem; cursor: pointer; }
.ac-item:last-child { border-bottom: 0; }
.ac-item:active { background: #eef4fa; }
input:not([type="checkbox"]) { font-size: 16px; }  /* iOS не будет зумить страницу при фокусе */
@media (max-width: 560px) {
  nav { gap: .9rem; padding: .7rem .8rem; font-size: .95rem; }
  main { margin: 1rem auto; }
  .entry-form, .search-form, .calc { flex-direction: column; align-items: stretch; }
  .entry-form input:not([type="checkbox"]),
  .calc input:not([type="checkbox"]) { flex: none; width: 100%; }
  .ac-wrap { min-width: 0; }
  .search-form .btn, .entry-form .btn { width: 100%; }
  th, td { padding: .5rem .5rem; font-size: .92rem; }
}
input[type="checkbox"] {
  width: 18px;
  height: 18px;
  padding: 0;
  border: 0;
  margin: 0;
  accent-color: #1660a8;
}
.day-nav { display: flex; align-items: center; gap: 10px; margin: 10px 0; }
.btn.small, .small { padding: .35rem .8rem; font-size: .9rem; }
.meal { background: #fff; border-radius: 12px; padding: 1rem; margin: .8rem 0;
        box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.meal-head { display: flex; align-items: center; gap: 12px; }
.meal-head h2 { margin: 0; }
.meal-head form { max-width: none; }
.meal-kcal { color: #0a7d33; font-weight: 600; margin-left: auto; }
select { padding: .55rem .7rem; border: 1px solid #c8d2dc; border-radius: 8px; font-size: 16px; }
.muted-btn { background: #eef1f4; color: #1c2733; }
.muted-btn:hover { background: #dde3e9; }