:root {
  --bg: #0f1720;
  --card: #18222e;
  --card2: #1f2c3a;
  --line: #2a3a4d;
  --text: #e6edf3;
  --muted: #8aa0b4;
  --accent: #4cc2ff;
  --accent2: #2b8fc4;
  --danger: #ff6b6b;
  --ok: #4cd07d;
  --radius: 14px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: env(safe-area-inset-bottom);
}
.hidden { display: none !important; }
h1 { font-size: 1.2rem; margin: 0; }
h2 { font-size: 1.05rem; margin: 0 0 .6rem; }
.hint { color: var(--muted); font-size: .9rem; margin: .4rem 0; }
.error { color: var(--danger); }

/* Login */
#login { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; }
.card { background: var(--card); padding: 1.5rem; border-radius: var(--radius); width: 100%; max-width: 360px; display: grid; gap: .8rem; }
.muted { color: var(--muted); font-size: .85rem; text-align: center; margin: 0; }
.muted a { color: var(--accent); text-decoration: none; }

/* App shell */
header { display: flex; align-items: center; justify-content: space-between; padding: 1rem; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--bg); z-index: 5; }
main { padding: 1rem 1rem 5.5rem; max-width: 640px; margin: 0 auto; }
.view { display: grid; gap: .6rem; }

/* Inputs & buttons */
input[type=text], input[type=email], input[type=password], input[type=datetime-local] {
  background: var(--card2); border: 1px solid var(--line); color: var(--text);
  padding: .8rem; border-radius: 10px; font-size: 1rem; width: 100%;
}
button { font: inherit; cursor: pointer; border: none; border-radius: 10px; padding: .8rem 1rem; color: var(--text); background: var(--card2); }
button.primary { background: var(--accent2); color: #fff; font-weight: 600; }
button.primary:disabled { opacity: .4; }
button.ghost { background: transparent; border: 1px solid var(--line); color: var(--muted); }
button.ghost.small, .small { padding: .4rem .7rem; font-size: .85rem; }
.row { display: flex; gap: .5rem; align-items: center; }
.row.gap { justify-content: flex-end; margin-top: 1rem; }
.row-between { display: flex; justify-content: space-between; align-items: center; }
hr { border: none; border-top: 1px solid var(--line); margin: 1rem 0; }

/* Home grid */
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; margin: .6rem 0; }
.tile { background: var(--card); padding: 1.4rem 1rem; border-radius: var(--radius); font-size: 2rem; display: grid; gap: .3rem; }
.tile span { font-size: .95rem; color: var(--text); }

/* Scales (energy / severity / quality) */
.scale { display: flex; gap: .5rem; }
.scale button { flex: 1; background: var(--card2); border: 1px solid var(--line); padding: .9rem 0; font-size: 1.1rem; }
.scale.big button { padding: 1.2rem 0; font-size: 1.3rem; }
.scale button.sel { background: var(--accent2); border-color: var(--accent); color: #fff; }

/* Chips */
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip { background: var(--card2); border: 1px solid var(--line); padding: .55rem .8rem; border-radius: 999px; font-size: .9rem; }
.chip .uses { color: var(--muted); font-size: .75rem; margin-left: .3rem; }
.chip.sel { background: var(--accent2); border-color: var(--accent); color: #fff; }
.chip .tags { display: block; color: var(--muted); font-size: .7rem; }

/* Meal builder */
.meal-items { display: grid; gap: .5rem; }
.meal-item { background: var(--card); border-radius: 10px; padding: .6rem .8rem; display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.meal-item .portions { display: flex; gap: .3rem; }
.meal-item .portions button { padding: .35rem .6rem; font-size: .8rem; }
.meal-item .portions button.sel { background: var(--accent2); color: #fff; }
.meal-item .rm { color: var(--danger); background: transparent; padding: .3rem .5rem; }
.when { display: block; color: var(--muted); font-size: .85rem; margin: .6rem 0; }
.when input { margin-top: .3rem; }

/* Stepper */
.stepper { display: flex; justify-content: space-between; align-items: center; background: var(--card); padding: .8rem; border-radius: 10px; }
.stepper span { display: flex; align-items: center; gap: 1rem; }
.stepper b { font-size: 1.3rem; min-width: 3ch; text-align: center; }

/* History */
.history { display: grid; gap: .5rem; }
.hentry { background: var(--card); border-radius: 10px; padding: .7rem .8rem; display: flex; justify-content: space-between; gap: .5rem; }
.hentry .meta { color: var(--muted); font-size: .78rem; }
.hentry .rm { color: var(--danger); background: transparent; }

/* Tabbar */
#tabbar { position: fixed; bottom: 0; left: 0; right: 0; display: flex; background: var(--card); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); }
#tabbar button { flex: 1; background: transparent; color: var(--muted); border-radius: 0; padding: .8rem .2rem; font-size: .8rem; }
#tabbar button.active { color: var(--accent); }

/* Modal */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: grid; place-items: end center; z-index: 20; }
.modal-card { background: var(--card); width: 100%; max-width: 640px; border-radius: var(--radius) var(--radius) 0 0; padding: 1.2rem; display: grid; gap: .6rem; }

/* Badge + toast */
.badge { background: var(--danger); color: #fff; border-radius: 999px; padding: .25rem .6rem; font-size: .75rem; }
.toast { position: fixed; bottom: 5rem; left: 50%; transform: translateX(-50%); background: var(--ok); color: #04210f; padding: .6rem 1rem; border-radius: 999px; font-size: .9rem; z-index: 30; }