/* ---------- Theme ---------- */
:root {
  --bg:        #0f1220;
  --bg-soft:   #171a2e;
  --card:      #1c2038;
  --card-2:    #232841;
  --line:      #2c3252;
  --text:      #e7e9f5;
  --muted:     #9aa0c3;
  --primary:   #6c7bff;
  --primary-2: #8a97ff;
  --good:      #34c98a;
  --normal:    #f0b542;
  --bad:       #f2596b;
  --radius:    14px;
  --shadow:    0 10px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #202544 0%, var(--bg) 55%);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { margin: 0; font-weight: 650; }
button { font-family: inherit; cursor: pointer; }

/* ---------- Brand ---------- */
.brand { display: flex; align-items: center; gap: 10px; }
.brand h1 { font-size: 1.15rem; letter-spacing: .2px; }
.brand-dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--good));
  box-shadow: 0 0 16px var(--primary);
}
.brand-sub { color: var(--muted); margin: .35rem 0 1.4rem; font-size: .9rem; }

/* ---------- Buttons ---------- */
.btn {
  border: 1px solid transparent; border-radius: 10px;
  padding: .6rem 1rem; font-size: .92rem; font-weight: 600;
  color: var(--text); background: var(--card-2); transition: .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn.small { padding: .45rem .7rem; font-size: .85rem; }
.btn.primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; }
.btn.ghost { background: transparent; border-color: var(--line); color: var(--muted); }
.btn.ghost:hover { color: var(--text); border-color: var(--primary); }

/* ---------- Auth page ---------- */
.auth-body { display: grid; place-items: center; min-height: 100vh; padding: 1.5rem; }
.auth-card {
  width: 100%; max-width: 380px; background: var(--card);
  border: 1px solid var(--line); border-radius: 18px;
  padding: 2rem; box-shadow: var(--shadow);
}
.tabs { display: flex; gap: .4rem; background: var(--bg-soft); padding: .3rem; border-radius: 12px; margin-bottom: 1.2rem; }
.tab {
  flex: 1; border: none; background: transparent; color: var(--muted);
  padding: .6rem; border-radius: 9px; font-weight: 600;
}
.tab.active { background: var(--card-2); color: var(--text); }
.auth-form { display: flex; flex-direction: column; gap: 1rem; }
.auth-form label { display: flex; flex-direction: column; gap: .4rem; font-size: .85rem; color: var(--muted); }
.auth-form input, input, select {
  background: var(--bg-soft); border: 1px solid var(--line); color: var(--text);
  padding: .65rem .75rem; border-radius: 10px; font-size: .95rem; outline: none;
}
input:focus, select:focus { border-color: var(--primary); }
.auth-form .btn { margin-top: .4rem; }
.msg { margin: 1rem 0 0; font-size: .88rem; min-height: 1.1rem; text-align: center; }
.msg.error { color: var(--bad); }
.hidden { display: none !important; }

/* ---------- Layout ---------- */
.layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--bg-soft); border-right: 1px solid var(--line);
  padding: 1.5rem 1.1rem; display: flex; flex-direction: column;
}
.side-nav { display: flex; flex-direction: column; gap: .35rem; margin-top: 1.8rem; }
.nav-item {
  text-align: left; border: none; background: transparent; color: var(--muted);
  padding: .75rem .8rem; border-radius: 11px; font-weight: 600; font-size: .95rem;
}
.nav-item:hover { background: var(--card); color: var(--text); }
.nav-item.active { background: var(--card-2); color: var(--text); box-shadow: inset 3px 0 0 var(--primary); }
.side-foot { margin-top: auto; display: flex; flex-direction: column; gap: .7rem; font-size: .85rem; color: var(--muted); }

.content { padding: 2rem 2.2rem; overflow: auto; }
.view-head { margin-bottom: 1.4rem; }
.view-head h2 { font-size: 1.5rem; }
.muted { color: var(--muted); font-size: .9rem; margin: .3rem 0 0; }

/* ---------- Cards ---------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.1rem 1.2rem; box-shadow: var(--shadow);
}
.card h3 { font-size: 1.05rem; margin-bottom: .8rem; }
.card h4 { font-size: .95rem; margin-bottom: .8rem; }

/* ---------- Diet tab ---------- */
.meal-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.2rem; }
.add-food { display: flex; gap: .5rem; margin-bottom: .9rem; }
.add-food input { flex: 1; }
.chip-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.chip {
  display: inline-flex; align-items: center; gap: .45rem;
  background: var(--card-2); border: 1px solid var(--line);
  padding: .4rem .7rem; border-radius: 999px; font-size: .85rem;
}
.chip.empty { color: var(--muted); background: transparent; border-style: dashed; }
.chip-x, .log-x {
  border: none; background: transparent; color: var(--muted);
  font-size: 1rem; line-height: 1; padding: 0; cursor: pointer;
}
.chip-x:hover, .log-x:hover { color: var(--bad); }

/* ---------- Calendar ---------- */
.calendar-layout { display: grid; grid-template-columns: minmax(320px, 420px) 1fr; gap: 1.4rem; align-items: start; }
.cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: .8rem; }
.cal-dow, .cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.cal-dow span { text-align: center; color: var(--muted); font-size: .72rem; padding-bottom: .3rem; }
.cal-cell {
  aspect-ratio: 1; border: 1px solid var(--line); background: var(--bg-soft);
  border-radius: 10px; color: var(--text); font-size: .85rem;
  display: grid; place-items: center; position: relative; transition: .12s;
}
.cal-cell.blank { border: none; background: transparent; }
.cal-cell:hover:not(.blank) { border-color: var(--primary); }
.cal-cell.today { outline: 2px solid var(--primary-2); outline-offset: -2px; }
.cal-cell.selected { background: var(--card-2); border-color: var(--primary); font-weight: 700; }
.cal-cell.good   { background: rgba(52,201,138,.20);  border-color: var(--good); }
.cal-cell.normal { background: rgba(240,181,66,.20);  border-color: var(--normal); }
.cal-cell.bad    { background: rgba(242,89,107,.20);  border-color: var(--bad); }
.legend { display: flex; gap: 1.1rem; margin-top: 1rem; font-size: .78rem; color: var(--muted); }
.legend .dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: .35rem; }
.dot.good { background: var(--good); } .dot.normal { background: var(--normal); } .dot.bad { background: var(--bad); }

/* ---------- Day panel ---------- */
.day-panel { display: flex; flex-direction: column; gap: 1.1rem; }
.day-title { font-size: 1.1rem; color: var(--primary-2); }
.rating-row { display: flex; gap: .6rem; flex-wrap: wrap; }
.rate-btn {
  flex: 1; min-width: 90px; border: 1px solid var(--line); background: var(--bg-soft);
  color: var(--text); padding: .6rem; border-radius: 11px; font-weight: 600;
}
.rate-btn[data-rating="good"].active   { background: rgba(52,201,138,.22);  border-color: var(--good); }
.rate-btn[data-rating="normal"].active { background: rgba(240,181,66,.22);  border-color: var(--normal); }
.rate-btn[data-rating="bad"].active    { background: rgba(242,89,107,.22);  border-color: var(--bad); }

.meal-log { padding: .7rem 0; border-top: 1px solid var(--line); }
.meal-log:first-child { border-top: none; padding-top: 0; }
.meal-label { font-weight: 600; margin-bottom: .5rem; font-size: .9rem; }
.log-form { display: flex; gap: .5rem; flex-wrap: wrap; }
.log-form .grow { flex: 1; min-width: 120px; }
.log-form input { flex: 1; min-width: 120px; }
.log-list { list-style: none; margin: .6rem 0 0; padding: 0; display: flex; flex-direction: column; gap: .4rem; }
.log-list li {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--card-2); padding: .45rem .7rem; border-radius: 9px; font-size: .88rem;
}
.log-list li.empty { background: transparent; color: var(--muted); font-style: italic; padding-left: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; align-items: center; flex-wrap: wrap; }
  .side-nav { flex-direction: row; margin: 0 0 0 auto; }
  .side-foot { flex-direction: row; align-items: center; margin: 0 0 0 1rem; }
  .calendar-layout { grid-template-columns: 1fr; }
}