:root {
  --bg: #F4F4F5;
  --card: #FFFFFF;
  --ink: #11181C;
  --muted: #71717A;
  --accent: #006FEE;
  --accent-soft: #E6F1FE;
  --line: #E4E4E7;
  --warn: #F31260;
  --shadow-sm: 0px 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0px 4px 14px rgba(0, 0, 0, 0.05);
}
* { box-sizing: border-box; margin: 0; }
body {
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 60px;
  -webkit-font-smoothing: antialiased;
}
header h1 { font-size: 2rem; letter-spacing: -0.5px; font-weight: 700; }
.sub { color: var(--muted); margin-top: 4px; }

nav#tabs {
  display: flex; gap: 4px; flex-wrap: wrap;
  margin: 20px 0; position: sticky; top: 0;
  background: var(--line); padding: 6px; z-index: 5;
  border-radius: 16px;
}
nav#tabs button {
  border: none; background: transparent;
  padding: 8px 16px; border-radius: 12px; cursor: pointer;
  font-size: 0.95rem; color: var(--muted); font-weight: 500;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.1s;
  flex: 1; min-width: max-content; text-align: center;
}
nav#tabs button:hover {
  color: var(--ink);
}
nav#tabs button:active {
  transform: scale(0.97);
}
nav#tabs button.active { 
  background: var(--card); color: var(--ink); 
  box-shadow: var(--shadow-sm); 
}

.tab { display: none; }
.tab.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

h2 { margin: 22px 0 10px; font-size: 1.3rem; font-weight: 600; }
h3 { margin: 16px 0 8px; font-size: 1.05rem; font-weight: 600; }
.muted { color: var(--muted); font-size: 0.92rem; }

.card {
  background: var(--card); border: 1px solid transparent;
  border-radius: 16px; padding: 16px; margin-bottom: 14px;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card.accent { background: var(--accent-soft); border: 1px solid var(--accent-soft); box-shadow: none; }
.card.prep { background: #FEF0F2; border: 1px solid transparent; box-shadow: none; }

table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-md); }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 0.93rem; }
th { background: var(--accent-soft); font-weight: 600; }
tr:last-child td { border-bottom: none; }
td.day, th.day { white-space: nowrap; font-weight: 600; }
.kcal { color: var(--muted); font-size: 0.85rem; white-space: nowrap; }
.note { color: var(--accent); font-size: 0.85rem; }
.free { color: var(--warn); font-weight: 600; }

.week-nav { display: flex; gap: 6px; margin: 10px 0 14px; flex-wrap: wrap; }
.week-nav button {
  border: none; background: var(--line); color: var(--muted); font-weight: 500;
  padding: 8px 16px; border-radius: 12px; cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.1s, box-shadow 0.2s;
}
.week-nav button:hover { background: #d4d4d8; color: var(--ink); }
.week-nav button:active { transform: scale(0.97); }
.week-nav button.active { background: var(--accent); color: #fff; box-shadow: var(--shadow-sm); }

ul { padding-left: 20px; margin: 6px 0; }
li { margin-bottom: 4px; }

.stat-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 12px 0; }
.stat {
  flex: 1; min-width: 130px; background: var(--card);
  border: 1px solid transparent; border-radius: 16px;
  padding: 14px; text-align: center;
  box-shadow: var(--shadow-md);
}
.stat .num { font-size: 1.5rem; font-weight: 700; color: var(--accent); }
.stat .lbl { font-size: 0.82rem; color: var(--muted); }

details { background: var(--card); border: 1px solid transparent; box-shadow: var(--shadow-md); border-radius: 16px; padding: 12px 16px; margin-bottom: 10px; transition: box-shadow 0.2s; }
summary { cursor: pointer; font-weight: 600; }
details p { margin-top: 8px; font-size: 0.92rem; }

/* рецепти всередині таблиці/карток меню */
td details.meal, .day-card details.meal, .today-meal details.meal {
  background: none; border: none; box-shadow: none; padding: 0; margin: 0;
}
details.meal summary { font-weight: 500; }
details.meal summary:hover { color: var(--accent); }
details.meal p { margin: 6px 0 0; color: var(--muted); font-size: 0.85rem; border-left: 3px solid var(--accent); padding-left: 8px; }

/* ===== Сьогодні ===== */
.today-date { color: var(--muted); margin: 4px 0 12px; text-transform: capitalize; }
.today-meal .meal-label, .day-card .meal-label {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--accent); font-weight: 700; margin: 10px 0 2px;
}
.today-meal .meal-label:first-child { margin-top: 0; }
.today-train { font-size: 1.05rem; }

/* ===== Меню: картки для мобільного ===== */
.menu-cards { display: none; }
.day-card-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; border-bottom: 1px solid var(--line); padding-bottom: 6px; margin-bottom: 4px; }

/* ===== Покупки ===== */
.shop-list { background: var(--card); border: 1px solid transparent; border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-md); }
.shop-item {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; border-bottom: 1px solid var(--line); cursor: pointer;
  transition: background 0.2s;
}
.shop-item:hover { background: var(--bg); }
.shop-item:last-child { border-bottom: none; }
.shop-item input { width: 20px; height: 20px; accent-color: var(--accent); flex-shrink: 0; border-radius: 6px; }
.shop-name { flex: 1; font-weight: 500; }
.shop-qty { color: var(--muted); font-size: 0.88rem; white-space: nowrap; }
.shop-item.done .shop-name { text-decoration: line-through; color: var(--muted); }
.btn-small {
  background: var(--line); border: none; border-radius: 10px;
  padding: 6px 12px; cursor: pointer; color: var(--ink); font-size: 0.85rem; font-weight: 500;
  transition: transform 0.1s, background 0.2s;
}
.btn-small:hover { background: #d4d4d8; }
.btn-small:active { transform: scale(0.97); }

.weight-form { display: flex; gap: 8px; margin: 14px 0; flex-wrap: wrap; }
.weight-form input { 
  padding: 10px 14px; border: 2px solid transparent; border-radius: 12px; font-size: 1rem;
  background: var(--line); color: var(--ink); transition: background 0.2s, border-color 0.2s; outline: none;
}
.weight-form input:focus {
  background: var(--card); border-color: var(--accent); box-shadow: var(--shadow-sm);
}
.weight-form button {
  background: var(--accent); color: #fff; border: none; font-weight: 500;
  padding: 10px 20px; border-radius: 12px; cursor: pointer; font-size: 1rem;
  transition: transform 0.1s, opacity 0.2s, box-shadow 0.2s;
}
.weight-form button:hover { opacity: 0.9; box-shadow: var(--shadow-sm); }
.weight-form button:active { transform: scale(0.97); }

canvas { width: 100%; height: auto; background: var(--card); border: 1px solid transparent; border-radius: 16px; margin: 10px 0; box-shadow: var(--shadow-md); }
#w-list table { margin-top: 10px; box-shadow: none; border: 1px solid var(--line); }
#w-list button { background: none; border: none; color: var(--warn); cursor: pointer; transition: transform 0.1s; }
#w-list button:active { transform: scale(0.9); }

footer { margin-top: 40px; color: var(--muted); font-size: 0.82rem; border-top: 1px solid var(--line); padding-top: 14px; }

@media (max-width: 700px) {
  header h1 { font-size: 1.4rem; }
  body { padding: 16px 12px 40px; }
  nav#tabs { gap: 4px; padding: 4px; border-radius: 14px; }
  nav#tabs button { padding: 8px 12px; font-size: 0.85rem; }
  /* меню: таблиця → картки */
  .menu-table { display: none; }
  .menu-cards { display: block; }
  th, td { padding: 8px 6px; font-size: 0.85rem; }
}

/* ===== Вхід ===== */
body.auth-locked > header,
body.auth-locked > nav,
body.auth-locked > main,
body.auth-locked > footer { display: none; }

#login-overlay {
  position: fixed; inset: 0; background: var(--bg);
  display: none; align-items: center; justify-content: center; z-index: 50;
}
#login-overlay.show, body.auth-locked #login-overlay { display: flex; animation: fadeIn 0.3s ease; }
.login-box {
  background: var(--card); border-radius: 20px; padding: 32px 24px;
  width: 90%; max-width: 360px; box-shadow: var(--shadow-md);
}
.login-box h2 { margin: 0 0 16px; font-size: 1.4rem; font-weight: 600; text-align: center; }
.login-box input {
  width: 100%; padding: 12px 14px; margin-bottom: 12px;
  border: 2px solid transparent; border-radius: 12px; font-size: 1rem;
  background: var(--line); color: var(--ink); transition: background 0.2s, border-color 0.2s; outline: none;
}
.login-box input:focus {
  background: var(--card); border-color: var(--accent); box-shadow: var(--shadow-sm);
}
.login-box button {
  width: 100%; background: var(--accent); color: #fff; border: none; font-weight: 500;
  padding: 12px; border-radius: 12px; font-size: 1rem; cursor: pointer;
  transition: transform 0.1s, opacity 0.2s, box-shadow 0.2s; margin-top: 8px;
}
.login-box button:hover { opacity: 0.9; box-shadow: var(--shadow-sm); }
.login-box button:active { transform: scale(0.97); }
.login-err { color: var(--warn); font-size: .85rem; min-height: 1.2em; margin-bottom: 6px; text-align: center; }
footer a { color: var(--muted); }

/* ===== Заміна страви ===== */
.ovr-badge { background: var(--warn); color: #fff; font-size: .72rem; padding: 2px 8px; border-radius: 10px; vertical-align: middle; }
.swap-btn { margin-top: 8px; }
.swap-form { margin-top: 10px; border-top: 1px dashed var(--line); padding-top: 10px; }
.swap-form select, .swap-form input {
  width: 100%; padding: 10px 12px; border: 2px solid transparent;
  border-radius: 12px; font-size: .95rem; margin-bottom: 8px; background: var(--line);
  color: var(--ink); transition: background 0.2s, border-color 0.2s; outline: none;
}
.swap-form select:focus, .swap-form input:focus {
  background: var(--card); border-color: var(--accent); box-shadow: var(--shadow-sm);
}
.swap-row { display: flex; gap: 8px; }
.swap-row input:first-child { flex: 1; }
.swap-row input[type=number] { max-width: 110px; }
.btn-save { background: var(--accent); color: #fff; border: none; border-radius: 12px; padding: 10px 16px; font-weight: 500; transition: transform 0.1s, opacity 0.2s; }
.btn-save:hover { opacity: 0.9; }
.btn-save:active { transform: scale(0.97); }

/* ===== Додаткова їжа ===== */
.extra-item { display: flex; align-items: center; gap: 8px; padding: 6px 0; border-bottom: 1px solid var(--line); }
.extra-item:last-child { border-bottom: none; }
.extra-item .kcal { margin-left: auto; }
.extra-del { background: none; border: none; color: var(--warn); cursor: pointer; font-size: 1.2rem; padding: 4px 8px; transition: transform 0.1s; border-radius: 8px; }
.extra-del:hover { background: #FEF0F2; }
.extra-del:active { transform: scale(0.9); }

/* ===== AI Assistant ===== */
.ai-card { background: var(--accent-soft); border-color: transparent; box-shadow: none; }
.ai-status { font-size: 0.85rem; margin-top: 8px; padding: 8px 12px; border-radius: 10px; }
.ai-status.loading { color: var(--ink); background: var(--line); }
.ai-status.success { color: var(--accent); background: var(--card); box-shadow: var(--shadow-sm); }
.ai-status.error { color: var(--warn); background: #FEF0F2; }

/* ===== Нові фічі UI ===== */
/* Прогрес бар калорій */
.calorie-progress { background: var(--line); border-radius: 10px; height: 10px; margin: 8px 0; overflow: hidden; position: relative; }
.calorie-fill { background: var(--accent); height: 100%; transition: width 0.3s ease; border-radius: 10px; }
.calorie-fill.over { background: var(--warn); }

/* Швидкі перекуси */
.quick-snacks { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.quick-snack-btn { background: var(--line); border: none; border-radius: 12px; padding: 6px 12px; font-size: 0.82rem; cursor: pointer; color: var(--ink); transition: transform 0.1s, background 0.2s; font-weight: 500; }
.quick-snack-btn:hover { background: #d4d4d8; }
.quick-snack-btn:active { transform: scale(0.97); }

/* Трекер води */
.water-tracker { display: flex; gap: 4px; align-items: center; margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--line); }
.water-glass { font-size: 1.3rem; cursor: pointer; filter: grayscale(1) opacity(0.3); transition: all 0.2s ease; user-select: none; }
.water-glass.filled { filter: none; opacity: 1; transform: scale(1.15); }
.water-label { font-size: 0.85rem; color: var(--muted); margin-left: auto; font-weight: 500; }

/* Фільтр покупок */
.hide-checked .shop-item.done { display: none !important; }

/* Швидка вага (Today tab) */
.quick-weight { display: flex; gap: 8px; margin-top: 8px; align-items: center; }
.quick-weight input { width: 90px; padding: 8px 12px; border: 2px solid transparent; border-radius: 12px; font-size: 0.95rem; background: var(--line); color: var(--ink); outline: none; transition: background 0.2s, border-color 0.2s; }
.quick-weight input:focus { background: var(--card); border-color: var(--accent); box-shadow: var(--shadow-sm); }

/* ===== Канбан-планер ===== */
.planner-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 14px; }
.planner-head h2 { margin-bottom: 4px; }
.planner-day-nav { display: none; }
.planner-board { display: grid; grid-template-columns: repeat(7, minmax(210px, 1fr)); gap: 12px; overflow-x: auto; padding-bottom: 12px; }
.planner-day { background: var(--bg); border: 1px solid var(--line); border-radius: 16px; padding: 12px; min-height: 420px; }
.planner-day h3 { font-size: 1rem; margin: 2px 2px 12px; color: var(--accent); font-weight: 600; }
.planner-section-title { margin: 10px 2px 6px; color: var(--muted); font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; }
.planner-list { min-height: 54px; display: flex; flex-direction: column; gap: 8px; }
.planner-card { position: relative; display: flex; flex-direction: column; gap: 4px; background: var(--card); border: 1px solid transparent; border-radius: 14px; padding: 12px 12px 12px 32px; box-shadow: var(--shadow-sm); transition: box-shadow 0.2s; }
.planner-card:hover { box-shadow: var(--shadow-md); }
.planner-card small { color: var(--muted); text-transform: uppercase; font-size: .66rem; letter-spacing: .4px; font-weight: 600; }
.planner-card strong { font-size: .88rem; line-height: 1.25; font-weight: 500; }
.planner-card .muted { font-size: .75rem; }
.planner-card.training-card { border-left: 4px solid var(--accent); border-radius: 14px; }
.planner-card.meal-card { border-left: 4px solid #F5A524; border-radius: 14px; } /* HeroUI warning color for meals */
.drag-handle { position: absolute; left: 8px; top: 12px; color: var(--muted); cursor: grab; font-size: 1.15rem; touch-action: none; transition: color 0.2s; }
.drag-handle:hover { color: var(--ink); }
.drag-handle:active { cursor: grabbing; color: var(--accent); }
.planner-ghost { opacity: .4; background: var(--accent-soft); border-radius: 14px; }

@media (max-width: 700px) {
  .planner-head { align-items: center; }
  .planner-head p { font-size: .82rem; }
  .planner-head #planner-reset { flex: 0 0 auto; padding: 8px 12px; }
  .planner-day-nav {
    position: sticky; top: 0; z-index: 5; display: flex; justify-content: space-between;
    gap: 6px; margin: 0 -4px 12px; padding: 8px 4px; background: var(--bg);
  }
  .planner-day-nav a {
    flex: 1; min-width: 0; padding: 8px 4px; border: none; border-radius: 12px;
    background: var(--card); color: var(--accent); text-align: center; text-decoration: none; font-size: .78rem; font-weight: 600; box-shadow: var(--shadow-sm);
  }
  .planner-board { display: block; overflow: visible; padding-bottom: 0; }
  .planner-day { min-height: 0; margin-bottom: 16px; scroll-margin-top: 62px; background: transparent; border: none; padding: 0; }
  .planner-list { min-height: 64px; }
  .planner-card { padding-top: 12px; padding-bottom: 12px; }
  .drag-handle { padding: 4px; margin: -4px; top: 16px; }
}