/* Quotae — foglio di stile unico, scritto a mano.
 *
 * Due regole da tenere a mente leggendo:
 *
 * 1. Niente valori dinamici qui dentro. Il colore del tema, il gradiente,
 *    l'opacita' delle card e il font scelto arrivano come variabili CSS che
 *    theme.js imposta da JavaScript. Il CSS le usa e basta.
 * 2. Proprieta' logiche ovunque (margin-inline, inset-inline-start, text-align:
 *    start) invece di left/right. E' quello che fa funzionare l'arabo da destra
 *    a sinistra con il solo dir="rtl", cosa che la app Android non faceva.
 */

:root {
  /* Impostati da theme.js; questi sono i valori di partenza di
     app_constants.dart, utili prima che il JavaScript parta. */
  --theme: rgb(73 123 221);
  --gradient-start: rgb(73 123 221);
  --gradient-end: rgb(6 48 138);
  --card-opacity: 0.85;
  --quote-font: "Noto Sans";

  /* L'icona di condivisione nei preferiti e' di un verde acqua fisso, diverso
     dal colore del tema. E' un residuo di una vecchia tavolozza rimasto nel
     Dart: lo teniamo per fedelta', ma isolato qui invece che sparso nel codice. */
  --legacy-share: #2193b0;

  /* Superfici di contorno: impostazioni, categorie, donazioni, debug, fogli. */
  --surface: #ffffff;
  --surface-2: #f5f5f5;
  --text: #212121;
  --text-muted: #616161;
  --text-faint: #757575;
  --border: #e0e0e0;
  --danger: #b3261e;
  --danger-soft: #fdecea;

  --radius: 12px;
  --radius-lg: 16px;
  --chrome-font: "Noto Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Le ombre di Material 2, quelle che Flutter disegna per ogni elevation. */
  --elev-1: 0 2px 1px -1px rgb(0 0 0 / .2), 0 1px 1px 0 rgb(0 0 0 / .14), 0 1px 3px 0 rgb(0 0 0 / .12);
  --elev-2: 0 3px 1px -2px rgb(0 0 0 / .2), 0 2px 2px 0 rgb(0 0 0 / .14), 0 1px 5px 0 rgb(0 0 0 / .12);
  --elev-4: 0 2px 4px -1px rgb(0 0 0 / .2), 0 4px 5px 0 rgb(0 0 0 / .14), 0 1px 10px 0 rgb(0 0 0 / .12);
  --elev-5: 0 3px 5px -1px rgb(0 0 0 / .2), 0 5px 8px 0 rgb(0 0 0 / .14), 0 1px 14px 0 rgb(0 0 0 / .12);
  --elev-6: 0 3px 5px -1px rgb(0 0 0 / .2), 0 6px 10px 0 rgb(0 0 0 / .14), 0 1px 18px 0 rgb(0 0 0 / .12);
  --elev-7: 0 4px 5px -2px rgb(0 0 0 / .2), 0 7px 10px 1px rgb(0 0 0 / .14), 0 2px 16px 1px rgb(0 0 0 / .12);
  --elev-8: 0 5px 5px -3px rgb(0 0 0 / .2), 0 8px 10px 1px rgb(0 0 0 / .14), 0 3px 14px 2px rgb(0 0 0 / .12);
  --elev-10: 0 6px 6px -3px rgb(0 0 0 / .2), 0 10px 14px 1px rgb(0 0 0 / .14), 0 4px 18px 3px rgb(0 0 0 / .12);

  color-scheme: light dark;
}

/* Il tema scuro tocca solo le schermate di contorno. Le card della frase e dei
 * preferiti restano bianche in entrambi gli schemi: stanno sopra uno sfondo che
 * ha scelto l'utente, e scurirle vorrebbe dire ridisegnare il suo gradiente. */
@media (prefers-color-scheme: dark) {
  :root {
    --surface: #1c1c1e;
    --surface-2: #2c2c2e;
    --text: #f2f2f7;
    --text-muted: #b0b0b8;
    --text-faint: #8e8e93;
    --border: #3a3a3c;
    --danger: #ff6b6b;
    --danger-soft: #3a1f1d;
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--chrome-font);
  color: var(--text);
  background: var(--surface);
  -webkit-text-size-adjust: 100%;
}

.noscript {
  margin: 24px;
  font-size: 16px;
  line-height: 1.5;
}

/* ------------------------------------------------------------------- viste */

.view { display: none; }
.view[data-active] { display: block; }

/* Home e Preferiti stanno sopra lo sfondo scelto dall'utente; le altre no. */
.view-backdrop {
  background-image: var(--background-image, none);
  background-color: transparent;
  background-size: cover;
  background-position: center;
}
.view-backdrop::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(to bottom right, var(--gradient-start), var(--gradient-end));
}
body[data-background="image"] .view-backdrop::before { display: none; }

.view-plain { background: var(--surface); }

/* Scorre il documento, non un contenitore interno: cosi' la barra degli
 * indirizzi del telefono si ritrae come si aspetta l'utente, e il riordino puo'
 * ragionare in coordinate del documento senza doppi sistemi di riferimento. */
.view-body { padding-bottom: calc(88px + env(safe-area-inset-bottom)); }

.center-host {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100dvh - 56px);
  padding: 24px;
}

.column { max-width: 560px; margin-inline: auto; width: 100%; }

/* ------------------------------------------------------------------ appbar */

.appbar {
  display: flex;
  align-items: center;
  gap: 4px;
  position: sticky;
  inset-block-start: 0;
  z-index: 10;
  min-height: 56px;
  padding-inline: 4px;
  padding-top: env(safe-area-inset-top);
  background: var(--theme);
  color: #fff;
  /* elevation: 0, come tutte le AppBar della app Android. */
}

.appbar-title {
  flex: 1;
  margin: 0;
  padding-inline: 12px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.appbar-actions { display: flex; align-items: center; }

/* La freccia indietro si specchia da sola in arabo. */
[dir="rtl"] .appbar-icon svg { transform: scaleX(-1); }

.appbar .search-field {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  color: #fff;
  font: inherit;
  font-size: 16px;
  padding-inline: 12px;
  outline: none;
}
.appbar .search-field::placeholder { color: rgb(255 255 255 / .7); }

/* ----------------------------------------------------------------- bottoni */

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  min-height: 48px;
  padding: 8px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  /* L'increspatura di Material non si riproduce: resta un velo al tocco. */
  transition: background-color .15s ease;
}
.icon-button:hover, .icon-button:focus-visible { background: rgb(109 213 237 / .3); }
.icon-button:active { background: rgb(109 213 237 / .45); }
.icon-button:focus-visible { outline: 2px solid currentColor; outline-offset: -2px; }

.btn {
  min-height: 44px;
  padding: 10px 20px;
  border: 0;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  background: transparent;
  color: var(--theme);
}
.btn.primary { background: var(--theme); color: #fff; }
.btn.ghost { color: var(--text-muted); }
.btn.danger { background: var(--danger); color: #fff; }
.btn:focus-visible { outline: 2px solid var(--theme); outline-offset: 2px; }

.btn-block { display: block; width: 100%; }

/* Il bottone esteso in basso a destra: su Android era il FAB dei Preferiti. */
.fab {
  position: fixed;
  inset-block-end: calc(16px + env(safe-area-inset-bottom));
  inset-inline-end: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 20px;
  border: 0;
  border-radius: 999px;
  background: var(--theme);
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  cursor: pointer;
  box-shadow: var(--elev-6);
}
.fab:active { box-shadow: var(--elev-8); }

/* -------------------------------------------------------------------- card */

/* La card della frase: bianca, con la trasparenza scelta dall'utente. */
.card {
  background: rgb(255 255 255 / var(--card-opacity));
  border-radius: var(--radius-lg);
  box-shadow: var(--elev-10);
  overflow: hidden;
  position: relative;
}

.quote-body { padding: 32px 24px; display: flex; flex-direction: column; align-items: center; }
.quote-mark { color: #9e9e9e; margin-top: 24px; }
.quote-text {
  margin: 10px 0 0;
  font-family: var(--quote-font), var(--chrome-font);
  font-size: 22px;
  font-style: italic;
  color: #424242;
  text-align: center;
  line-height: 1.4;
}
.quote-author {
  margin: 15px 0 0;
  font-family: var(--quote-font), var(--chrome-font);
  font-size: 16px;
  font-weight: 700;
  color: #757575;
  text-align: center;
}
.quote-lang { display: flex; justify-content: center; padding-inline-start: 20px; }
.quote-actions { display: flex; gap: 20px; margin-top: 20px; color: var(--theme); }

.quote-divider { width: 100%; height: 1px; background: rgb(0 0 0 / .12); margin: 20px 0; }

.quote-tags {
  position: absolute;
  inset-block-start: 4px;
  inset-inline-start: 4px;
  display: flex;
  color: rgb(158 158 158 / .5);
}
/* Le icone dei tag sono decorative: nel Dart il loro onPressed e' vuoto. */
.quote-tags .icon-button { min-width: 36px; min-height: 36px; cursor: default; }
.quote-tags .icon-button:hover { background: transparent; }

.lang-select {
  font: inherit;
  font-size: 16px;
  padding: 6px 8px;
  border: 0;
  border-bottom: 1px solid rgb(0 0 0 / .42);
  background: transparent;
  color: #212121;
  /* I codici lingua sono sempre in latino: restano da sinistra a destra anche
     nella versione araba, dove altrimenti "EN" finirebbe dopo la bandiera. */
  direction: ltr;
}

/* ------------------------------------------------------------------- righe */

.tile {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  min-height: 56px;
  padding: 12px 16px;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: start;
  cursor: pointer;
}
div.tile { cursor: default; }
.tile:hover, .tile:focus-visible { background: rgb(109 213 237 / .12); }
.tile:focus-visible { outline: 2px solid var(--theme); outline-offset: -2px; }

.tile-icon { display: inline-flex; color: var(--text-muted); flex: none; }
.tile-body { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.tile-title { font-size: 16px; }
.tile-subtitle { font-size: 13px; color: var(--text-faint); }
.tile-trailing { display: inline-flex; align-items: center; flex: none; color: var(--text-faint); }

.divider { border: 0; border-top: 1px solid var(--border); margin: 0; }

.section-label {
  margin: 0;
  padding: 16px 16px 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
}

.swatch {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  border: 1px solid var(--border);
  /* Il colore lo mette JavaScript: un attributo style nel markup lo bloccherebbe
     la CSP. */
}

/* ------------------------------------------------------------------ fogli */

dialog.sheet {
  width: min(560px, 100%);
  max-height: 85dvh;
  margin: auto auto 0;
  padding: 0;
  border: 0;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--elev-8);
}
dialog.sheet::backdrop { background: rgb(0 0 0 / .45); }

.sheet-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px 20px calc(20px + env(safe-area-inset-bottom));
  max-height: 85dvh;
  overflow-y: auto;
}
.sheet-title { margin: 0; font-size: 20px; font-weight: 700; }
.sheet-text { margin: 0; font-size: 15px; line-height: 1.5; color: var(--text-muted); }
.sheet-body { display: flex; flex-direction: column; gap: 12px; }
.sheet-actions { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }

.field { display: flex; flex-direction: column; gap: 6px; }
.field > label { font-size: 13px; color: var(--text-muted); }
.field input, .field textarea {
  font: inherit;
  font-size: 16px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--text);
  resize: vertical;
}
.field input:focus, .field textarea:focus { outline: 2px solid var(--theme); outline-offset: -1px; }
.field [aria-invalid="true"] { border-color: var(--danger); }

/* ------------------------------------------------------------------- toast */

#toast {
  position: fixed;
  inset-block-end: calc(24px + env(safe-area-inset-bottom));
  inset-inline: 16px;
  max-width: 520px;
  margin-inline: auto;
  padding: 14px 16px;
  border-radius: 8px;
  background: #323232;
  color: #fff;
  font-size: 14px;
  line-height: 1.4;
  box-shadow: var(--elev-6);
  z-index: 50;
}
#toast.danger { background: var(--danger); }

/* --------------------------------------------------------------- controlli */

.segmented {
  display: flex;
  margin: 0 16px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented label {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  font-size: 14px;
  cursor: pointer;
}
.segmented input:checked + label { background: var(--theme); color: #fff; }
.segmented input:focus-visible + label { outline: 2px solid var(--theme); outline-offset: -2px; }
.segmented label .check { display: none; }
.segmented input:checked + label .check { display: inline-flex; }

input[type="range"] { width: 100%; accent-color: var(--theme); }

.slider-row { display: flex; align-items: center; gap: 12px; padding: 0 16px 12px; }
.slider-value { min-width: 3.5ch; font-size: 13px; color: var(--text-muted); font-variant-numeric: tabular-nums; }

/* Anteprime dello sfondo nelle impostazioni. */
.preview {
  margin: 0 16px 8px;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
}
.preview-gradient { height: 150px; background-image: linear-gradient(to bottom right, var(--gradient-start), var(--gradient-end)); }
.preview-image { height: 200px; }
.preview-card {
  background: rgb(255 255 255 / var(--card-opacity));
  border-radius: var(--radius);
  box-shadow: var(--elev-1);
  padding: 20px 40px;
  font-family: var(--quote-font), var(--chrome-font);
  color: rgb(0 0 0 / .54);
}

/* ------------------------------------------------------- elenco dei font */

.font-list { display: flex; flex-direction: column; }
.font-option {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 12px 8px;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: start;
  cursor: pointer;
  border-radius: 8px;
}
.font-option:hover, .font-option:focus-visible { background: var(--surface-2); }
.font-option[aria-selected="true"] { background: var(--surface-2); font-weight: 700; }
/* Il nome di ogni font e' scritto col font stesso. La famiglia la imposta
   JavaScript con element.style: sotto style-src 'self' un attributo style nel
   markup verrebbe ignorato e l'elenco sarebbe tutto uguale. */
.font-option .font-name { font-size: 18px; }
.font-option .font-group { font-size: 12px; color: var(--text-faint); }

/* ------------------------------------------------- preferenze categorie */

.reorder-list { display: flex; flex-direction: column; padding: 8px 0; }

.reorder-card {
  background: var(--surface);
  border-radius: var(--radius);
  margin-block: 6px;
  /* L'elevazione e il margine laterale scalano con la posizione: la prima
     categoria "galleggia" piu' in alto e piu' larga. Li imposta JavaScript. */
  touch-action: none;
}
.reorder-card.dragging { opacity: .9; z-index: 5; }

.distribution { padding: 16px; }
.distribution-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.distribution-name {
  width: 80px;
  flex: none;
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.distribution-track {
  flex: 1;
  height: 18px;
  border-radius: 8px;
  background: #e0e0e0;
  overflow: hidden;
}
.distribution-fill { height: 100%; background: var(--theme); border-radius: 8px; }
.distribution-value { width: 45px; flex: none; text-align: end; font-size: 12px; font-weight: 700; }

/* ----------------------------------------------------------- preferiti */

.favorite-card {
  background: rgb(255 255 255 / var(--card-opacity));
  border-radius: var(--radius);
  box-shadow: var(--elev-4);
  margin: 8px 4px;
  padding: 16px;
  touch-action: none;
}
.favorite-quote {
  margin: 0;
  font-family: var(--quote-font), var(--chrome-font);
  font-size: 18px;
  font-style: italic;
  color: #212121;
  line-height: 1.4;
}
.favorite-row { display: flex; align-items: center; gap: 4px; margin-top: 4px; }
.favorite-author {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  font-weight: 700;
  color: #424242;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.favorite-comment {
  margin-top: 8px;
  padding: 8px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  background: #f5f5f5;
  font-size: 14px;
  color: rgb(0 0 0 / .87);
  line-height: 1.4;
}

.empty-state {
  padding: 48px 24px;
  text-align: center;
  font-size: 18px;
  color: #222222;
}

/* ------------------------------------------------------------ onboarding */

.welcome { padding: 24px; display: flex; flex-direction: column; }
.welcome-label { font-size: 16px; font-weight: 700; margin: 16px 0 12px; }
.welcome-body { margin: 50px 0 32px; font-size: 18px; line-height: 1.5; text-align: center; }
.welcome select { font: inherit; font-size: 16px; padding: 10px 8px; width: 100%; direction: ltr; }

/* -------------------------------------------------------------- donazioni */

.donations { padding: 16px; text-align: center; }
.donations-heart { color: var(--theme); }
.donations-header { font-size: 24px; font-weight: 700; margin: 10px 0; }
.donations-body { font-size: 16px; line-height: 1.5; color: var(--text-muted); white-space: pre-line; }
.donations-signature { font-size: 18px; font-style: italic; color: var(--text); text-align: end; margin-top: 16px; }
.donation-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--elev-2);
  margin: 8px 0;
  text-align: start;
}
.donations-thanks { font-size: 18px; font-style: italic; margin: 24px 0 50px; }

/* ------------------------------------------------------------------ debug */

.debug-section {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--elev-2);
  margin: 8px 16px;
  padding: 16px;
}
.debug-title { font-size: 18px; font-weight: 700; margin: 0 0 8px; }
.debug-list { margin: 0; padding: 0; list-style: none; font-size: 14px; line-height: 1.6; }
.debug-list li { display: flex; gap: 8px; padding: 4px 0; border-top: 1px solid var(--border); }
.debug-badge {
  flex: none;
  width: 28px; height: 28px;
  border-radius: 999px;
  background: var(--theme);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px;
}

/* ------------------------------------------------------------ note legali */

.legal { padding: 16px; max-width: 720px; margin-inline: auto; }
.legal h2 { font-size: 20px; margin: 28px 0 8px; }
.legal h3 { font-size: 16px; margin: 20px 0 6px; }
.legal p, .legal li { font-size: 15px; line-height: 1.6; color: var(--text-muted); }
.legal ul { padding-inline-start: 20px; }
.legal .lang-note { font-size: 13px; color: var(--text-faint); font-style: italic; }
.legal code { font-family: "Roboto Mono", ui-monospace, monospace; font-size: 13px; }

/* ------------------------------------------------------------ movimento */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

/* ------------------------------------------------------ selettore di colore */

.cp-area {
  position: relative;
  height: 180px;
  border-radius: 8px;
  /* Saturazione in orizzontale, luminosita' in verticale, sopra la tinta pura
     che imposta JavaScript in --cp-hue. */
  background-image:
    linear-gradient(to top, #000, transparent),
    linear-gradient(to right, #fff, var(--cp-hue, red));
  touch-action: none;
  cursor: crosshair;
}

.cp-hue, .cp-alpha {
  position: relative;
  height: 24px;
  margin-top: 16px;
  border-radius: 999px;
  touch-action: none;
  cursor: pointer;
}
.cp-hue {
  background-image: linear-gradient(to right, #f00, #ff0, #0f0, #0ff, #00f, #f0f, #f00);
}
.cp-alpha {
  /* La scacchiera che fa vedere la trasparenza. */
  background-color: #fff;
  background-image:
    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%),
    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%);
  background-size: 12px 12px;
  background-position: 0 0, 6px 6px;
  overflow: hidden;
}
.cp-alpha-fill { position: absolute; inset: 0; }

.cp-area-thumb, .cp-track-thumb {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px rgb(0 0 0 / .35);
  pointer-events: none;
  transform: translate(-50%, -50%);
}
[dir="rtl"] .cp-area-thumb, [dir="rtl"] .cp-track-thumb { transform: translate(50%, -50%); }
.cp-track-thumb { top: 50%; }

.cp-footer { display: flex; align-items: center; gap: 12px; margin-top: 16px; }
.cp-preview {
  width: 44px; height: 44px;
  flex: none;
  border-radius: 8px;
  border: 1px solid var(--border);
  background-color: #fff;
  background-image:
    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%),
    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%);
  background-size: 12px 12px;
  background-position: 0 0, 6px 6px;
}
.cp-hex {
  flex: 1;
  font-family: "Roboto Mono", ui-monospace, monospace;
  font-size: 16px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--text);
  text-transform: uppercase;
}

.favorites-list { padding: 8px; }

.settings-note { margin: 0; padding: 4px 16px 16px; font-size: 12px; color: var(--text-faint); line-height: 1.5; }
.tile-value { font-size: 14px; color: var(--text-faint); }