/* =============================================================================
   Pressione — foglio di stile unico.
   Tema chiaro di default, scuro automatico col telefono. Niente font esterni:
   si usa lo stack di sistema, che su iOS e Android è già quello delle app vere.
   ========================================================================== */

:root {
  --sfondo:      #f2f3f6;
  --carta:       #ffffff;
  --testo:       #14161c;
  --testo-soft:  #6b7280;
  --bordo:       #e4e6eb;
  --ombra:       0 1px 2px rgba(16,18,26,.06), 0 6px 18px rgba(16,18,26,.06);

  --sis:         #c02942;   /* massima */
  --dia:         #2563c9;   /* minima  */
  --bpm:         #7c4dbe;   /* battiti */
  --limite:      #e0475f;

  --ok:          #17835a;
  --ok-sf:       #e6f5ee;
  --attenzione:  #a86612;
  --attenzione-sf:#fdf0dc;
  --alta:        #c02942;
  --alta-sf:     #fceaed;
  --normale-sf:  #e9f2fb;
  --normale:     #1f5fa8;

  --marchio:     #b3243b;
  --marchio-2:   #d6465c;
  --su-accento:  #ffffff;   /* testo sopra il colore d'accento */

  --raggio:      16px;
  --tabbar:      calc(58px + env(safe-area-inset-bottom));
}

@media (prefers-color-scheme: dark) {
  :root {
    --sfondo:     #0f1116;
    --carta:      #191c23;
    --testo:      #e9eaee;
    --testo-soft: #969bA6;
    --bordo:      #2a2e38;
    --ombra:      0 1px 2px rgba(0,0,0,.4);

    --sis:        #ef6b81;
    --dia:        #6aa5f5;
    --bpm:        #b18ce6;
    --limite:     #f0637a;

    --ok:         #4cc38a;  --ok-sf:        #12271f;
    --attenzione: #e0a44a;  --attenzione-sf:#2a2013;
    --alta:       #f0637a;  --alta-sf:      #2d151b;
    --normale:    #7fb0f0;  --normale-sf:   #14202f;

    --marchio:    #14161c;
    --marchio-2:  #1d222c;
    /* al buio l'accento si schiarisce: sopra ci va testo scuro, non bianco */
    --su-accento: #14161c;
  }
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

body {
  margin: 0;
  background: var(--sfondo);
  color: var(--testo);
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  padding-bottom: var(--tabbar);
  overscroll-behavior-y: none;
}

h1, h2, h3 { margin: 0; font-weight: 650; letter-spacing: -.01em; }
a { color: inherit; text-decoration: none; }
.mut { color: var(--testo-soft); }
small { font-size: 12px; }

/* ---- barra superiore ----------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: linear-gradient(135deg, var(--marchio), var(--marchio-2));
  color: #fff;
  padding-top: env(safe-area-inset-top);
  box-shadow: 0 1px 0 rgba(0,0,0,.08);
}
.topbar-in {
  max-width: 720px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 11px 16px;
}
.chi { display: flex; align-items: center; gap: 11px; min-width: 0; }
.avatar {
  width: 38px; height: 38px; flex: none; border-radius: 50%;
  background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.28);
  display: grid; place-items: center; font-weight: 700; font-size: 14px; letter-spacing: .02em;
}
.chi-testo { display: flex; flex-direction: column; min-width: 0; }
.chi-testo strong { font-size: 16px; font-weight: 640; letter-spacing: -.01em; }
.chi-testo small { opacity: .78; font-size: 11.5px; }
.esci { opacity: .8; padding: 6px; display: grid; place-items: center; }
.esci:active { opacity: 1; }

.contenuto { max-width: 720px; margin: 0 auto; padding: 14px 14px 24px; }

/* ---- barra inferiore ----------------------------------------------------- */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  display: grid; grid-template-columns: repeat(3, 1fr);
  background: color-mix(in srgb, var(--carta) 96%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  border-top: 1px solid var(--bordo);
  padding-bottom: env(safe-area-inset-bottom);
}
.tab {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 8px 0 7px; color: var(--testo-soft); font-size: 11px; font-weight: 550;
}
.tab svg { width: 22px; height: 22px; }
.tab.attiva { color: var(--sis); }

/* ---- pezzi comuni -------------------------------------------------------- */
.card {
  background: var(--carta); border: 1px solid var(--bordo); border-radius: var(--raggio);
  box-shadow: var(--ombra); padding: 16px; margin-bottom: 14px;
}
.intestazione-card {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 10px;
}
.intestazione-card h2 { font-size: 15.5px; }
.link { color: var(--dia); font-size: 13px; font-weight: 550; }

.bottone {
  display: inline-block; background: var(--sis); color: var(--su-accento); border: 0;
  border-radius: 12px; padding: 12px 18px; font: inherit; font-weight: 600; cursor: pointer;
}
.bottone.grande { display: block; width: 100%; padding: 15px; font-size: 16.5px; margin-top: 4px; }
.bottone:active { filter: brightness(.94); }
.bottone-testo {
  display: block; width: 100%; margin-top: 12px; background: none; border: 0;
  font: inherit; font-size: 14px; padding: 8px; cursor: pointer; color: var(--testo-soft);
}
.bottone-testo.pericolo { color: var(--alta); }

.badge {
  display: inline-block; padding: 2.5px 9px; border-radius: 999px;
  font-size: 11.5px; font-weight: 640; white-space: nowrap;
}
.badge.ottimale   { background: var(--ok-sf);         color: var(--ok); }
.badge.normale    { background: var(--normale-sf);    color: var(--normale); }
.badge.attenzione { background: var(--attenzione-sf); color: var(--attenzione); }
.badge.alta       { background: var(--alta-sf);       color: var(--alta); }

.avviso { border-radius: 12px; padding: 11px 14px; margin-bottom: 13px; font-size: 14px; }
.avviso.ok     { background: var(--ok-sf);   color: var(--ok); }
.avviso.errore { background: var(--alta-sf); color: var(--alta); }
.avviso p { margin: 2px 0; }
.avviso a { text-decoration: underline; font-weight: 600; }

.vuoto { text-align: center; padding: 34px 20px; }
.vuoto h2 { margin-bottom: 6px; }
.errore-dett {
  background: var(--sfondo); border-radius: 10px; padding: 10px; text-align: left;
  font-size: 12px; white-space: pre-wrap; overflow-x: auto; color: var(--testo-soft);
}

/* ---- schermata Oggi ------------------------------------------------------ */
.card-ultima { padding: 18px 18px 16px; border-left: 4px solid var(--ok); }
.card-ultima.normale    { border-left-color: var(--normale); }
.card-ultima.attenzione { border-left-color: var(--attenzione); }
.card-ultima.alta       { border-left-color: var(--alta); }

.quando { color: var(--testo-soft); font-size: 13px; display: flex; align-items: center; gap: 7px; }
.oggi-tag {
  background: var(--sis); color: var(--su-accento); border-radius: 999px;
  padding: 1px 8px; font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em;
}
.lettura { display: flex; align-items: baseline; gap: 4px; margin: 6px 0 10px; }
.lettura .numero {
  font-size: 54px; font-weight: 700; letter-spacing: -.035em; line-height: 1;
  font-variant-numeric: tabular-nums;
}
.lettura .barra { font-size: 34px; font-weight: 300; color: var(--testo-soft); margin: 0 2px; }
.lettura .unita { font-size: 13px; color: var(--testo-soft); margin-left: 6px; }
.sotto-lettura { display: flex; align-items: center; gap: 12px; }
.bpm { display: inline-flex; align-items: center; gap: 5px; color: var(--bpm); font-size: 13.5px; font-weight: 600; }

.medie { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
.media {
  background: var(--carta); border: 1px solid var(--bordo); border-radius: 13px;
  padding: 11px 8px; text-align: center; box-shadow: var(--ombra);
}
.media .k { display: block; font-size: 11px; color: var(--testo-soft); font-weight: 550; }
.media .v { display: block; font-size: 19px; font-weight: 680; letter-spacing: -.02em; font-variant-numeric: tabular-nums; margin-top: 2px; }
.media .v i { font-style: normal; font-weight: 300; color: var(--testo-soft); margin: 0 1px; }
.media .u { display: block; font-size: 11px; color: var(--testo-soft); margin-top: 1px; }
.delta { font-weight: 650; }
.delta.giu { color: var(--ok); }
.delta.su  { color: var(--attenzione); }

.nota-archivio { text-align: center; color: var(--testo-soft); font-size: 12.5px; margin: 4px 0 0; }

/* ---- selettori di periodo ------------------------------------------------ */
.segmenti {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 3px;
  background: var(--carta); border: 1px solid var(--bordo); border-radius: 12px;
  padding: 3px; margin-bottom: 12px;
}
.segmenti a {
  text-align: center; padding: 8px 4px; border-radius: 9px;
  font-size: 13.5px; font-weight: 560; color: var(--testo-soft);
}
.segmenti a.attivo { background: var(--sis); color: var(--su-accento); }

.scelta-anni { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.pillola {
  background: var(--carta); border: 1px solid var(--bordo); border-radius: 999px;
  padding: 7px 15px; font-size: 14px; font-weight: 560;
}
.pillola small { color: var(--testo-soft); margin-left: 4px; }
.pillola.attiva { background: var(--sis); border-color: var(--sis); color: var(--su-accento); }
.pillola.attiva small { color: inherit; opacity: .7; }

.nav-mese { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.freccia {
  width: 40px; height: 40px; flex: none; display: grid; place-items: center;
  background: var(--carta); border: 1px solid var(--bordo); border-radius: 11px;
  font-size: 21px; line-height: 1; color: var(--testo);
}
.freccia.spenta { opacity: .32; }
.scelta-mese {
  flex: 1; -webkit-appearance: none; appearance: none; text-align: center;
  background: var(--carta); border: 1px solid var(--bordo); border-radius: 11px;
  padding: 10px 8px; font: inherit; font-weight: 600; color: var(--testo);
}

.form-periodo {
  display: flex; gap: 8px; align-items: flex-end; flex-wrap: wrap;
  background: var(--carta); border: 1px solid var(--bordo); border-radius: 12px;
  padding: 11px; margin-bottom: 12px;
}
.form-periodo label { flex: 1 1 130px; font-size: 12px; color: var(--testo-soft); }
.form-periodo input {
  display: block; width: 100%; margin-top: 3px; font: inherit;
  background: var(--sfondo); color: var(--testo);
  border: 1px solid var(--bordo); border-radius: 9px; padding: 8px 9px;
}
.form-periodo button {
  background: var(--sis); color: var(--su-accento); border: 0; border-radius: 9px;
  padding: 10px 16px; font: inherit; font-weight: 600; cursor: pointer;
}

/* ---- riquadri statistiche ------------------------------------------------ */
.riquadri { display: grid; grid-template-columns: repeat(auto-fit, minmax(104px, 1fr)); gap: 10px; margin-bottom: 14px; }
.riquadro {
  background: var(--carta); border: 1px solid var(--bordo); border-radius: 13px;
  padding: 11px 12px; box-shadow: var(--ombra);
}
.riquadro .k { display: block; font-size: 11px; color: var(--testo-soft); font-weight: 550; }
.riquadro .v { display: block; font-size: 20px; font-weight: 680; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.riquadro .v i { font-style: normal; font-weight: 300; color: var(--testo-soft); }
.riquadro .u { display: block; font-size: 10.5px; color: var(--testo-soft); }
.riquadro.ok .v      { color: var(--ok); }
.riquadro.allarme .v { color: var(--alta); }

/* ---- elenco per mese ----------------------------------------------------- */
.elenco details {
  background: var(--carta); border: 1px solid var(--bordo); border-radius: var(--raggio);
  margin-bottom: 10px; overflow: hidden; box-shadow: var(--ombra);
}
.elenco summary {
  display: flex; justify-content: space-between; align-items: center;
  padding: 13px 16px; cursor: pointer; font-weight: 620; list-style: none;
}
.elenco summary::-webkit-details-marker { display: none; }
.elenco summary::after { content: '⌄'; color: var(--testo-soft); margin-left: auto; padding-left: 10px; }
.elenco details[open] summary { border-bottom: 1px solid var(--bordo); }
.elenco details[open] summary::after { content: '⌃'; }

.titolo-elenco {
  display: flex; justify-content: space-between; align-items: baseline; gap: 8px;
  padding: 2px 4px 8px; font-size: 13px; font-weight: 620;
}
.titolo-elenco .mut { font-size: 11.5px; font-weight: 400; }
.tabella-mesi {
  background: var(--carta); border: 1px solid var(--bordo); border-radius: var(--raggio);
  overflow: hidden; box-shadow: var(--ombra);
}
.pallino { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.pallino.ottimale   { background: var(--ok); }
.pallino.normale    { background: var(--normale); }
.pallino.attenzione { background: var(--attenzione); }
.pallino.alta       { background: var(--alta); }

.tabella { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.tabella th {
  font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em;
  color: var(--testo-soft); text-align: right; padding: 7px 10px; border-bottom: 1px solid var(--bordo);
}
.tabella th:first-child, .tabella td.g { text-align: left; }
.tabella td { padding: 9px 10px; border-bottom: 1px solid var(--bordo); text-align: right; }
.tabella tr:last-child td { border-bottom: 0; }
.tabella tbody tr:active { background: var(--sfondo); }
.tabella td.g strong { display: inline-block; min-width: 20px; font-size: 15px; }
.tabella td.g small { color: var(--testo-soft); margin-left: 4px; }
.tabella td.n { font-size: 15px; font-weight: 600; }
.tabella td:last-child { padding-right: 12px; }

/* ---- grafici ------------------------------------------------------------- */
.card-grafico { padding: 14px 8px 10px; }
.card-grafico .intestazione-card { padding: 0 8px; }
.grafico { display: block; width: 100%; height: auto; touch-action: pan-y; }
.grafico-vuoto { text-align: center; padding: 26px 10px; }

.g-fascia    { fill: color-mix(in srgb, var(--ok) 8%, transparent); }
.g-griglia   { stroke: var(--bordo); stroke-width: 1; }
.g-griglia-v { stroke-dasharray: 2 4; opacity: .7; }
.g-etichetta-y { fill: var(--testo-soft); font-size: 8.5px; text-anchor: end; }
.g-etichetta-x { fill: var(--testo-soft); font-size: 8.5px; text-anchor: middle; }
.g-soglia { stroke: var(--limite); stroke-width: 1.1; stroke-dasharray: 5 3; opacity: .85; }
.g-soglia-testo { fill: var(--limite); font-size: 8px; font-weight: 600; text-anchor: end; stroke: none; }

.g-linea { fill: none; stroke-width: 1.9; stroke-linejoin: round; stroke-linecap: round; }
.g-linea.g-grezza { stroke-width: .8; opacity: .3; }
path.g-sis { stroke: var(--sis); }
path.g-dia { stroke: var(--dia); }
path.g-bpm { stroke: var(--bpm); stroke-width: 1.5; }
circle.g-sis { fill: var(--sis); }
circle.g-dia { fill: var(--dia); }

.g-titolo-bpm { fill: var(--testo-soft); font-size: 8.5px; }
.grafico-bpm { margin-top: 2px; }

/* In SVG l'attributo hidden non nasconde niente da solo: la regola del browser
   vale per gli elementi HTML. Senza questa riga il fumetto resta disegnato. */
.g-hover[hidden] { display: none; }
.g-hover-linea { stroke: var(--testo-soft); stroke-width: 1; stroke-dasharray: 3 3; }
.g-hover-punto { stroke: var(--carta); stroke-width: 1.4; }
.g-hover-fumetto rect { fill: var(--testo); opacity: .93; }
.g-hover-fumetto text { fill: var(--carta); font-size: 8.5px; }
.g-hover-fumetto .g-hover-val { font-weight: 700; font-size: 9.5px; }

.legenda { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; padding: 8px 8px 2px; }
.legenda .voce { display: inline-flex; align-items: center; gap: 5px; font-size: 11.5px; color: var(--testo-soft); }
.pastiglia { width: 12px; height: 3px; border-radius: 2px; display: inline-block; }
.pastiglia.g-sis { background: var(--sis); }
.pastiglia.g-dia { background: var(--dia); }
.pastiglia.g-limite { background: repeating-linear-gradient(90deg, var(--limite) 0 4px, transparent 4px 7px); }

.spark { width: 100%; height: 26px; }

/* ---- form di inserimento ------------------------------------------------- */
.form-rilevazione h2 { font-size: 17px; margin-bottom: 14px; }
.riga-campi { display: flex; gap: 10px; margin-bottom: 12px; }
.campo { flex: 1; display: block; min-width: 0; }
.campo > span { display: block; font-size: 12px; color: var(--testo-soft); font-weight: 560; margin-bottom: 4px; }
.campo > span small { font-weight: 400; opacity: .8; }
.campo input {
  width: 100%; font: inherit; color: var(--testo);
  background: var(--sfondo); border: 1px solid var(--bordo); border-radius: 11px;
  padding: 11px 12px;
}
.campo input:focus { outline: 2px solid color-mix(in srgb, var(--sis) 45%, transparent); outline-offset: 1px; }
.riga-campi.grandi .campo input {
  font-size: 26px; font-weight: 680; text-align: center; padding: 12px 4px;
  letter-spacing: -.02em; font-variant-numeric: tabular-nums;
}
.riga-campi.grandi .campo > span { text-align: center; }
.nota-form { font-size: 12.5px; text-align: center; margin: 12px 0 0; }

/* ---- schermata di accesso ------------------------------------------------ */
.schermo-login { background: linear-gradient(160deg, var(--marchio), var(--marchio-2) 55%, #7d1729); }
.schermo-login .contenuto { display: grid; place-items: center; min-height: 100svh; padding-bottom: 40px; }
.login { width: 100%; max-width: 330px; color: #fff; }
.login-marchio { text-align: center; margin-bottom: 26px; }
.login-marchio h1 { font-size: 27px; margin-top: 6px; letter-spacing: -.02em; }
.login-marchio p { opacity: .8; margin: 4px 0 0; font-size: 14px; }
.login-form { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2); border-radius: 16px; padding: 18px; }
.login-form label { display: block; font-size: 12.5px; opacity: .85; margin-bottom: 6px; }
.login-form input {
  width: 100%; font: inherit; font-size: 19px; font-weight: 600; text-align: center; letter-spacing: .08em;
  background: rgba(255,255,255,.94); color: #14161c; border: 0; border-radius: 11px; padding: 13px;
}
.login-form input:focus { outline: 3px solid rgba(255,255,255,.55); outline-offset: 1px; }
.login-form button {
  width: 100%; margin-top: 12px; font: inherit; font-weight: 650; font-size: 16px;
  background: #fff; color: var(--marchio); border: 0; border-radius: 11px; padding: 13px; cursor: pointer;
}
.login-errore { margin: 10px 0 0; font-size: 13px; background: rgba(0,0,0,.22); border-radius: 9px; padding: 8px 10px; }
@media (prefers-color-scheme: dark) {
  .schermo-login { background: linear-gradient(160deg, #1a1d25, #0f1116 60%, #241016); }
  .login-form button { color: #b3243b; }
}

/* ---- schermi larghi: resta un'app, non diventa un gestionale -------------- */
@media (min-width: 700px) {
  .lettura .numero { font-size: 62px; }
  .contenuto { padding: 20px 16px 30px; }
}