/* ============ Theme variables ============ */
:root, [data-theme="dark"] {
  --bg: #18181b;
  --bg2: #121215;
  --panel: #232329;
  --panel2: #2c2c33;
  --border: rgba(255,255,255,.08);
  --text: #f4f4f5;
  --dim: #9898a0;
  --accent: #3b82f6;
  --accent-h: #609bfa;
  --red: #f87171;
  --orange: #fbb450;
  --green: #6ed68c;
  --pink: #f472b6;
  --shadow: 0 4px 16px rgba(0,0,0,.35);
}
[data-theme="light"] {
  --bg: #f4f4f5;
  --bg2: #e8e8ea;
  --panel: #ffffff;
  --panel2: #f0f0f2;
  --border: rgba(0,0,0,.09);
  --text: #18181b;
  --dim: #6b6b74;
  --accent: #2563eb;
  --accent-h: #3b82f6;
  --red: #dc2626;
  --orange: #d97706;
  --green: #16a34a;
  --pink: #db2777;
  --shadow: 0 4px 16px rgba(0,0,0,.08);
}

* { box-sizing: border-box; margin: 0; }
[hidden] { display: none !important; }
:root, [data-theme="dark"] { color-scheme: dark; }
[data-theme="light"] { color-scheme: light; }
html, body { height: 100%; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg); color: var(--text);
  font-size: 15px; -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; }

/* ============ Auth ============ */
.auth-wrap { min-height: 100dvh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.auth-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  box-shadow: var(--shadow); padding: 36px 32px; width: 100%; max-width: 400px; text-align: center;
}
.auth-logo { font-size: 42px; }
.auth-card h1 { font-size: 24px; margin: 6px 0 2px; }
.auth-sub { color: var(--dim); font-size: 13px; margin-bottom: 24px; }
.auth-card form { text-align: left; }
.auth-card label { display: block; font-size: 13px; color: var(--dim); margin-bottom: 14px; }
.auth-card input {
  width: 100%; margin-top: 5px; padding: 11px 12px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--panel2); color: var(--text); font-size: 15px;
}
.auth-switch { text-align: center; margin-top: 16px; font-size: 13px; color: var(--dim); }
.auth-switch a { color: var(--accent); text-decoration: none; }
.form-error { color: var(--red); font-size: 13px; min-height: 18px; margin-bottom: 8px; }
.hint { color: var(--dim); font-weight: normal; font-size: 12px; }

/* ============ Layout ============ */
.app { display: flex; min-height: 100dvh; }
.sidebar {
  width: 210px; flex-shrink: 0; background: var(--bg2);
  padding: 20px 0; display: flex; flex-direction: column; gap: 2px;
  position: sticky; top: 0; height: 100dvh;
}
.brand { font-size: 17px; font-weight: 600; padding: 0 20px 18px; color: var(--accent); }
.brand span { color: var(--text); }
.nav-btn {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 12px 20px; border: 0; background: none; color: var(--dim);
  font-size: 14.5px; font-weight: 600; cursor: pointer; text-align: left;
  border-left: 3px solid transparent;
}
.nav-btn:hover { background: var(--panel); color: var(--text); }
.nav-btn.active { background: var(--panel); color: var(--text); border-left-color: var(--accent); }
.sidebar-foot { margin-top: auto; padding: 14px 20px 0; font-size: 12px; color: var(--dim); }

.main { flex: 1; padding: 0 26px 40px; max-width: 1100px; min-width: 0; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 0 16px; position: sticky; top: 0; background: var(--bg); z-index: 5;
}
.topbar h2 { font-size: 22px; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.save-state { font-size: 12px; color: var(--dim); }
.icon-btn {
  border: 1px solid var(--border); background: var(--panel); color: var(--text);
  border-radius: 10px; padding: 8px 11px; font-size: 16px; cursor: pointer;
}

/* ============ Cards / lists ============ */
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 18px; margin-bottom: 16px; box-shadow: var(--shadow);
}
.card h3 { font-size: 15px; margin-bottom: 10px; }
.card .dim, p.dim { color: var(--dim); font-size: 13px; margin-bottom: 12px; }
.summary { font-size: 15px; font-weight: 600; }
.summary .big { font-size: 22px; }
.summary .sub { color: var(--dim); font-weight: normal; font-size: 13px; margin-top: 4px; }

.card-link {
  display: block; width: 100%; text-align: left; background: none; border: 0;
  color: var(--accent); font-size: 13px; font-weight: 700; letter-spacing: .4px;
  cursor: pointer; padding: 0 0 10px;
}
.card-link:hover { color: var(--accent-h); }
.dash-line { padding: 5px 0; font-size: 14px; display: flex; gap: 8px; flex-wrap: wrap; }
.dash-line.big { font-size: 17px; font-weight: 600; }

.toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.list { display: flex; flex-direction: column; gap: 10px; }

.item {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 13px 16px; display: flex; align-items: center; gap: 14px; cursor: pointer;
}
.item:hover { border-color: var(--accent); }
.item-main { flex: 1; min-width: 0; }
.item-title { font-weight: 600; font-size: 15px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.item-sub { color: var(--dim); font-size: 12.5px; margin-top: 3px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item-mid { text-align: right; font-size: 13px; color: var(--dim); flex-shrink: 0; }
.item-mid .top { color: var(--text); font-weight: 600; font-size: 14px; }
.item-actions { display: flex; gap: 6px; flex-shrink: 0; }

.tag {
  font-size: 11px; font-weight: 600; color: var(--dim);
  background: var(--panel2); border-radius: 6px; padding: 2px 7px;
}
.chip {
  font-size: 11px; font-weight: 700; border-radius: 6px; padding: 3px 8px; flex-shrink: 0;
}
.chip.red    { background: color-mix(in srgb, var(--red) 18%, transparent); color: var(--red); }
.chip.orange { background: color-mix(in srgb, var(--orange) 18%, transparent); color: var(--orange); }
.chip.green  { background: color-mix(in srgb, var(--green) 18%, transparent); color: var(--green); }
.chip.pink   { background: color-mix(in srgb, var(--pink) 18%, transparent); color: var(--pink); }
.chip.dim    { background: var(--panel2); color: var(--dim); }

.c-red { color: var(--red); } .c-orange { color: var(--orange); }
.c-green { color: var(--green); } .c-pink { color: var(--pink); } .c-dim { color: var(--dim); }

/* ============ Buttons / inputs ============ */
.btn {
  border: 1px solid var(--border); background: var(--panel2); color: var(--text);
  border-radius: 10px; padding: 9px 16px; font-size: 14px; font-weight: 600; cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-h); }
.btn.danger { color: var(--red); }
.btn.small { padding: 5px 10px; font-size: 12.5px; border-radius: 8px; }
.btn.wide { width: 100%; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-row.right { justify-content: flex-end; margin-top: 14px; }

.input {
  border: 1px solid var(--border); background: var(--panel2); color: var(--text);
  border-radius: 10px; padding: 9px 12px; font-size: 14px;
}
.input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.grow { flex: 1; min-width: 120px; }
.check { display: flex; align-items: center; gap: 7px; font-size: 13.5px; color: var(--dim); cursor: pointer; }
.stack { display: flex; flex-direction: column; gap: 10px; max-width: 340px; }
.row { display: flex; gap: 8px; margin-top: 5px; }

.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.seg button {
  border: 0; background: none; color: var(--dim); padding: 9px 18px;
  font-size: 14px; font-weight: 600; cursor: pointer;
}
.seg button.active { background: var(--accent); color: #fff; }

.invite-list { margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.invite-row {
  display: flex; align-items: center; gap: 10px; font-size: 14px;
  background: var(--panel2); border-radius: 10px; padding: 9px 12px;
}
.invite-row code { font-size: 15px; font-weight: 700; letter-spacing: 1px; }
.invite-row .dim { margin: 0; margin-left: auto; }

/* ============ Modals ============ */
.modal {
  margin: auto; /* re-center dialogs (the * reset removes the browser default) */
  border: 1px solid var(--border); border-radius: 16px; background: var(--panel);
  color: var(--text); padding: 22px; width: min(440px, calc(100vw - 32px));
  max-height: calc(100dvh - 40px); overflow-y: auto;
  box-shadow: var(--shadow);
}
.modal.wide-modal { width: min(640px, calc(100vw - 32px)); }
.modal::backdrop { background: rgba(0,0,0,.55); }
.modal h3 { margin-bottom: 14px; }
.modal label { display: block; font-size: 13px; color: var(--dim); margin-bottom: 12px; }
.modal label > .input, .modal label > .row { margin-top: 5px; }
.modal .input { width: 100%; }
.modal .row .input { width: auto; }
.modal textarea { resize: vertical; font-family: inherit; }
.modal .check { margin-bottom: 12px; }

/* ============ Calories / Workouts ============ */
.thumb {
  width: 52px; height: 52px; object-fit: cover; border-radius: 10px;
  flex-shrink: 0; cursor: pointer;
}
.photo-preview { max-width: 150px; border-radius: 10px; margin-bottom: 12px; display: block; }
#photoImg { max-width: 100%; border-radius: 12px; }
.bar { height: 10px; background: var(--panel2); border-radius: 6px; overflow: hidden; margin-top: 10px; }
.bar > div { height: 100%; background: var(--green); transition: width .3s; }
.bar.over > div { background: var(--red); }
.week-row { display: flex; justify-content: space-between; gap: 10px; padding: 4px 0; font-size: 13.5px; color: var(--dim); }
.week-row b { color: var(--text); }
input[type="date"].input { min-width: 140px; }

.fav-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.fav-row:empty { display: none; }
.fav-chip {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 20px;
  padding: 7px 13px; font-size: 13px; cursor: pointer; color: var(--text);
}
.fav-chip:hover { border-color: var(--accent); }
.fav-chip .x { color: var(--dim); font-weight: 700; padding: 0 2px; }
.fav-chip .x:hover { color: var(--red); }

.shop-list { margin-top: 12px; display: flex; flex-direction: column; gap: 4px; }
.shop-item { display: flex; align-items: center; gap: 10px; font-size: 14.5px; padding: 3px 0; }
.shop-item input { width: 18px; height: 18px; accent-color: var(--accent); }
.shop-item span { flex: 1; }
.shop-item.done span { text-decoration: line-through; color: var(--dim); }
.shop-item .x { color: var(--dim); cursor: pointer; font-weight: 700; padding: 0 6px; }
.shop-item .x:hover { color: var(--red); }

#weightSpark { margin: 6px 0 10px; }
#weightSpark polyline { fill: none; stroke: var(--accent); stroke-width: 2; }
.weight-row { display: flex; justify-content: space-between; gap: 10px; padding: 4px 0; font-size: 13.5px; color: var(--dim); cursor: pointer; }
.weight-row b { color: var(--text); }
.weight-row .x { color: var(--dim); font-weight: 700; padding: 0 4px; }
.weight-row .x:hover { color: var(--red); }

/* ============ Bottom nav (mobile) ============ */
.bottomnav { display: none; }
@media (max-width: 820px) {
  .sidebar { display: none; }
  .main { padding: 0 14px 90px; }
  .bottomnav {
    display: flex; position: fixed; bottom: 0; left: 0; right: 0; z-index: 10;
    background: var(--bg2); border-top: 1px solid var(--border);
    padding-bottom: env(safe-area-inset-bottom);
  }
  .bottomnav .nav-btn {
    flex: 1; flex-direction: column; gap: 2px; align-items: center;
    padding: 8px 0 6px; font-size: 15px; border-left: 0; border-top: 3px solid transparent;
    min-width: 0;
  }
  .bottomnav .nav-btn span { font-size: 9.5px; }
  .bottomnav .nav-btn.active { border-top-color: var(--accent); background: none; }

  /* Stacked card layout on phones: title row, then date/amount row, then buttons */
  .item { display: grid; grid-template-columns: 1fr auto; row-gap: 10px; align-items: center; }
  .item-main { grid-column: 1 / -1; }
  .item-sub { white-space: normal; }
  .item-mid { text-align: left; display: flex; align-items: baseline; gap: 8px; }
  .item-mid + .item-mid { justify-self: end; text-align: right; }
  .item-actions { grid-column: 1 / -1; justify-self: end; }
}