/* Keto Assistente — mobile-first, tema chiaro/scuro, contrasto WCAG AA. */

:root {
  --bg: #f6f8f6;
  --surface: #ffffff;
  --surface-2: #edf2ee;
  --text: #17231c;
  --text-muted: #4a5a50;
  --border: #c9d4cc;
  --primary: #1f6f4a;
  --primary-text: #ffffff;
  --focus: #0b57d0;
  --ok: #1f6f4a;
  --warn-bg: #fff4d6;
  --warn-text: #5c4300;
  --danger-bg: #fde3e1;
  --danger-text: #8a1c14;
  --info-bg: #e3eefc;
  --info-text: #123d73;
  --radius: 14px;
  --gap: 16px;
  --tabbar-h: 64px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1713;
    --surface: #17221c;
    --surface-2: #1f2d25;
    --text: #e6efe9;
    --text-muted: #a9bbb0;
    --border: #34463b;
    --primary: #6fcf9d;
    --primary-text: #0b1a12;
    --focus: #8ab4f8;
    --ok: #6fcf9d;
    --warn-bg: #3a2f0e;
    --warn-text: #ffe08a;
    --danger-bg: #3d1714;
    --danger-text: #ffb4ab;
    --info-bg: #142a45;
    --info-text: #b3d1ff;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0f1713;
  --surface: #17221c;
  --surface-2: #1f2d25;
  --text: #e6efe9;
  --text-muted: #a9bbb0;
  --border: #34463b;
  --primary: #6fcf9d;
  --primary-text: #0b1a12;
  --focus: #8ab4f8;
  --ok: #6fcf9d;
  --warn-bg: #3a2f0e;
  --warn-text: #ffe08a;
  --danger-bg: #3d1714;
  --danger-text: #ffb4ab;
  --info-bg: #142a45;
  --info-text: #b3d1ff;
  color-scheme: dark;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.5;
  padding-bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
}

h1, h2, h3 { line-height: 1.25; margin: 0 0 0.5em; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 0.75em; }
a { color: var(--primary); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -48px;
  padding: 8px 12px;
  background: var(--surface);
  color: var(--text);
  border-radius: 8px;
  z-index: 100;
}
.skip-link:focus { top: 8px; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: calc(10px + env(safe-area-inset-top)) var(--gap) 10px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.app-title { font-size: 1.15rem; margin: 0; }
.status { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}
.chip[data-state="offline"] { background: var(--warn-bg); color: var(--warn-text); border-color: transparent; }

/* Layout */
main {
  display: block;
  max-width: 720px;
  margin: 0 auto;
  padding: var(--gap);
}
main:focus { outline: none; }

.stack > * + * { margin-top: var(--gap); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--gap);
}

.notice { border-radius: var(--radius); padding: 12px var(--gap); }
.notice-info { background: var(--info-bg); color: var(--info-text); }
.notice-warn { background: var(--warn-bg); color: var(--warn-text); }
.notice-danger { background: var(--danger-bg); color: var(--danger-text); }

.kv { display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; margin: 0; }
.kv dt { color: var(--text-muted); }
.kv dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.kv + p, .kv-stack + p { margin-top: var(--gap); }

/* Elenco descrittivo con testi lunghi: etichetta sopra, valore sotto. */
.kv-stack { margin: 0; }
.kv-stack dt { font-weight: 600; }
.kv-stack dd { margin: 0 0 12px; color: var(--text-muted); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 48px;
  min-width: 48px;
  padding: 10px 18px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.btn-primary { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }

.action-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

/* Update banner */
.banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin: 0;
  padding: 10px var(--gap);
  background: var(--info-bg);
  color: var(--info-text);
}
.banner[hidden] { display: none; }
.banner p { margin: 0; }

/* Tab bar: uso con una mano */
.tabbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  min-height: var(--tabbar-h);
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.tabbar a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 48px;
  padding: 6px 2px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.75rem;
}
.tabbar a[aria-current="page"] { color: var(--primary); font-weight: 700; }
.tab-icon { font-size: 1.3rem; line-height: 1; }

.offline-page { padding-top: 15vh; text-align: center; }

/* Onboarding: niente barra di navigazione finché non è completo */
body.is-onboarding .tabbar { display: none; }
body.is-onboarding { padding-bottom: env(safe-area-inset-bottom); }
.step-count { color: var(--text-muted); font-size: 0.9rem; margin: 0 0 4px; }

/* Form */
.field { display: flex; flex-direction: column; gap: 4px; margin: 0 0 14px; }
.field label { font-weight: 600; }
input[type="text"], input[type="number"], input[type="search"], input:not([type]), select, textarea {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}
textarea { min-height: 72px; }
.hint { color: var(--text-muted); font-size: 0.9rem; margin: 0; }
.choices { border: 0; padding: 0; margin: 0 0 16px; min-width: 0; }
.choices legend { font-weight: 600; padding: 0; margin-bottom: 6px; }
.choice { display: flex; align-items: flex-start; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--surface-2); }
.choice input { width: 22px; height: 22px; margin: 2px 0 0; flex: none; accent-color: var(--primary); }
.choice label { flex: 1; }
.choice label .hint { display: inline; }
.form-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; margin-top: 8px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
details { margin: 0 0 14px; }
details summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; font-weight: 600; }
.btn-small { min-height: 40px; min-width: 40px; padding: 6px 12px; font-size: 0.9rem; }

/* Triage */
.triage { border-radius: var(--radius); padding: 12px var(--gap); margin: 0 0 12px; border: 1px solid var(--border); }
.triage-red { background: var(--danger-bg); color: var(--danger-text); border-color: transparent; }
.triage-yellow { background: var(--warn-bg); color: var(--warn-text); border-color: transparent; }
.triage-info, .triage-green { background: var(--info-bg); color: var(--info-text); border-color: transparent; }
.triage ul { margin: 6px 0 0; padding-left: 20px; }

/* Oggi */
.day-line { color: var(--text-muted); margin: 0; }
.summary { margin: 0 0 12px; }
.summary-row { display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; padding: 10px 0; border-bottom: 1px solid var(--surface-2); }
.summary-row dt { font-weight: 600; }
.summary-row dd { margin: 0; text-align: right; display: flex; flex-direction: column; }
.summary-value { font-size: 1.1rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.summary-row.is-over .summary-value { color: var(--danger-text); }
.row-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.meal + .meal { margin-top: 12px; }
.meal h3 { margin-bottom: 4px; }
.entries { list-style: none; margin: 0; padding: 0; }
.entry { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--surface-2); }
.entry-main { display: flex; flex-direction: column; min-width: 0; flex: 1 1 200px; }
.entry-name { font-weight: 600; overflow-wrap: anywhere; }
.entry-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 8px 6px; border-bottom: 1px solid var(--surface-2); text-align: right; }
th[scope="row"], thead th:first-child { text-align: left; }
tfoot th, tfoot td { font-weight: 700; }

/* Aggiungi */
.segmented { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; padding: 4px; background: var(--surface-2); border-radius: 12px; }
.seg { min-height: 44px; border: 0; border-radius: 9px; background: transparent; color: var(--text); font: inherit; font-weight: 600; cursor: pointer; }
.seg[aria-selected="true"] { background: var(--surface); color: var(--primary); box-shadow: 0 1px 2px rgb(0 0 0 / 0.12); }
.search-row { display: flex; gap: 8px; align-items: flex-end; }
.search-row .field { flex: 1; margin: 0; }
.results { list-style: none; margin: 12px 0 0; padding: 0; }
.result { display: flex; flex-direction: column; align-items: flex-start; width: 100%; min-height: 56px; padding: 10px 12px; text-align: left; background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 8px; font: inherit; cursor: pointer; }

/* Open Food Facts e scanner */
.off-block { border-top: 1px solid var(--surface-2); padding-top: 12px; }
.off-photo { max-width: 100%; max-height: 220px; border-radius: 10px; border: 1px solid var(--border); object-fit: contain; background: var(--surface-2); }
.quality { margin: 0; padding: 8px 12px; border-radius: 10px; }
.quality-3, .quality-2 { background: var(--info-bg); color: var(--info-text); }
.quality-1, .quality-0 { background: var(--warn-bg); color: var(--warn-text); }
.scanner-video { width: 100%; max-height: 50vh; border-radius: 12px; background: #000; object-fit: cover; }
.scanner-video[hidden] { display: none; }

/* Dialoghi e avvisi */
.dialog { width: min(560px, calc(100vw - 32px)); max-height: calc(100dvh - 32px); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--gap); background: var(--surface); color: var(--text); }
.dialog::backdrop { background: rgb(0 0 0 / 0.45); }
.dialog-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 8px; }
.dialog-head h2 { margin: 0; }
.toast-region { position: fixed; left: 16px; right: 16px; top: calc(64px + env(safe-area-inset-top)); z-index: 50; display: flex; justify-content: center; pointer-events: none; }
.toast { pointer-events: auto; display: flex; align-items: center; gap: 12px; max-width: 560px; padding: 10px 14px; border-radius: 12px; background: var(--text); color: var(--bg); box-shadow: 0 4px 16px rgb(0 0 0 / 0.25); }
.toast .btn { background: transparent; color: var(--bg); border-color: var(--bg); }

@media (max-width: 360px) {
  .grid-2 { grid-template-columns: 1fr; }
  .search-row { flex-direction: column; align-items: stretch; }
}

@media (min-width: 720px) {
  .tabbar { max-width: 720px; margin: 0 auto; border-left: 1px solid var(--border); border-right: 1px solid var(--border); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* Avvisi, terapia, regole (Milestone 4) */
.alert { border-left: 6px solid var(--border); padding: 10px 12px; margin: 0 0 12px; border-radius: 10px; background: var(--surface-2); }
.alert-urgent { border-color: var(--danger-text); background: var(--danger-bg); color: var(--danger-text); }
.alert-contact { border-color: var(--warn-text); background: var(--warn-bg); color: var(--warn-text); }
.alert-attention { border-color: var(--info-text); background: var(--info-bg); color: var(--info-text); }
.alert .hint { color: inherit; opacity: 0.9; }
.alert h3 { margin-bottom: 4px; }
.compact-list { margin: 0 0 12px; padding-left: 18px; }
.schedule-row { border: 1px solid var(--surface-2); border-radius: 10px; padding: 8px 10px; }
.schedule-row input[type="time"] { min-height: 44px; font: inherit; padding: 6px 10px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--text); }
.days { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.day { display: inline-flex; align-items: center; gap: 4px; min-height: 40px; padding: 0 8px; border: 1px solid var(--border); border-radius: 8px; }
.rule summary { display: block; cursor: pointer; min-height: 44px; }
.rule-note summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; }
.btn-danger { background: var(--danger-bg); color: var(--danger-text); border-color: var(--danger-text); }
input[type="password"], input[type="date"], input[type="datetime-local"], input[type="file"] {
  width: 100%; min-height: 48px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--text); font: inherit;
}