/* ==========================================================
   CLASSICAL GENIUS BOOKS — stile
   Sala da concerto: inchiostro scuro, avorio, oro antico
   ========================================================== */

:root {
    --bg: #f5eddc;
    --bg-alt: #efe4cc;
    --surface: #fbf6ea;
    --surface-2: #f3e9d2;
    --line: rgba(90, 68, 34, 0.16);
    --line-strong: rgba(31, 74, 58, 0.45);

    --text: #1a140b;
    --text-soft: #433725;
    --text-faint: #5f5139;

    /* accento: verde bosco (i nomi "gold" restano per compatibilità) */
    --gold: #1f4a3a;
    --gold-light: #2b5e49;
    --gold-deep: #163829;
    --sepia: #a67c3d;
    --on-accent: #f7f0e0;

    --ok: #3f7d5a;
    --warn: #b9832f;
    --bad: #b5524a;
    --neutral: #7b7f8c;

    --font-display: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
    --font-ui: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

    --radius: 14px;
    --radius-lg: 22px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-ui);
    font-size: 16px;
    line-height: 1.5;
    color: var(--text);
    min-height: 100vh;
    min-height: 100dvh;
    background:
        radial-gradient(900px 500px at 50% -8%, rgba(166, 124, 61, 0.14), transparent 70%),
        var(--bg);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    padding-bottom: env(safe-area-inset-bottom);
}

button,
select {
    font-family: var(--font-ui);
    -webkit-tap-highlight-color: transparent;
}

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

/* ---------- HEADER HOME ---------- */

#schermata-home header {
    text-align: center;
    padding: calc(48px + env(safe-area-inset-top)) 24px 34px;
}

#schermata-home header h1 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 2.9rem;
    line-height: 1.05;
    letter-spacing: 0.04em;
    color: var(--gold-light);
    margin-bottom: 10px;
}

#schermata-home header p {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 1.2rem;
    color: var(--text-soft);
}

/* ---------- HEADER GIOCO ---------- */

#schermata-gioco header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    position: relative;
    padding: calc(16px + env(safe-area-inset-top)) 20px 16px;
    border-bottom: 1px solid var(--line);
}

#schermata-gioco header h1 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.5rem;
    letter-spacing: 0.04em;
    color: var(--gold-light);
}

#btn-home {
    position: absolute;
    left: 16px;
    top: 50%;
    margin-top: calc(env(safe-area-inset-top) / 2);
    transform: translateY(-50%);
    background: transparent;
    border: 1px solid var(--line-strong);
    color: var(--gold-light);
    padding: 8px 14px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: background 0.2s ease, border-color 0.2s ease;
}

#btn-home:hover {
    background: rgba(31, 74, 58, 0.08);
    border-color: var(--gold);
}

/* ---------- MAIN ---------- */

main {
    max-width: 560px;
    margin: 0 auto;
    padding: 8px 20px 48px;
}

#schermata-gioco main {
    padding-top: 28px;
}

h2 {
    font-family: var(--font-display);
    font-weight: 600;
    text-align: center;
    color: var(--text);
    font-size: 1.6rem;
    letter-spacing: 0.02em;
    margin-bottom: 26px;
}

/* ---------- FILTRI ---------- */

#filtri {
    background: linear-gradient(180deg, var(--surface), var(--bg-alt));
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 32px 26px 28px;
    box-shadow: 0 24px 60px rgba(70, 50, 20, 0.14);
}

.filtro-gruppo {
    margin-bottom: 18px;
}

.filtro-gruppo label {
    display: block;
    margin-bottom: 7px;
    color: var(--gold);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.filtro-gruppo select {
    width: 100%;
    padding: 14px 44px 14px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background-color: var(--surface-2);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%231f4a3a' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    color: var(--text);
    font-size: 1rem;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.filtro-gruppo select:hover {
    border-color: var(--line-strong);
}

.filtro-gruppo select:focus {
    border-color: var(--gold);
}

.filtro-gruppo select option {
    background: var(--surface-2);
    color: var(--text);
}

/* ---------- BOTTONE GIOCA ---------- */

#btn-gioca {
    border: 1px solid var(--sepia) !important;
    display: block;
    width: 100%;
    margin-top: 30px;
    padding: 18px;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--on-accent);
    background: linear-gradient(180deg, var(--gold-light), var(--gold));
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.18) inset,
        0 10px 28px rgba(31, 74, 58, 0.22);
    transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

#btn-gioca:hover {
    filter: brightness(1.06);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.18) inset,
        0 14px 34px rgba(31, 74, 58, 0.30);
}

#btn-gioca:active {
    transform: translateY(1px) scale(0.995);
}

/* ---------- CARD BRANO ---------- */

#card-frase {
    background: linear-gradient(180deg, var(--surface), var(--bg-alt));
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 44px 24px 36px;
    text-align: center;
    margin-bottom: 20px;
    box-shadow: 0 24px 60px rgba(70, 50, 20, 0.14);
}

#info-frase {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 1.4rem;
    color: var(--text-soft);
    min-height: 2em;
    margin-bottom: 30px;
}

/* ---------- BOTTONE MOSTRA RISPOSTA ---------- */

#btn-mostra-risposta {
    display: block;
    width: 100%;
    padding: 17px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: var(--radius);
    color: var(--gold-light);
    background: transparent;
    border: 1px solid var(--line-strong);
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

#btn-mostra-risposta:hover {
    background: rgba(31, 74, 58, 0.07);
    border-color: var(--gold);
}

#btn-mostra-risposta:active {
    transform: translateY(1px);
}

/* ---------- RISPOSTA ---------- */

#risposta {
    background: linear-gradient(180deg, var(--surface), var(--bg-alt));
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    padding: 34px 22px 24px;
    text-align: center;
    animation: entra 0.35s ease both;
    box-shadow: 0 24px 60px rgba(70, 50, 20, 0.14);
}

@keyframes entra {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

#titolo-risposta {
    color: var(--gold-light);
    font-size: 1.9rem;
    line-height: 1.15;
    margin-bottom: 10px;
}

#autore-risposta {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 1.3rem;
    color: var(--text-soft);
    margin-bottom: 14px;
}

/* ---------- BOTTONI VALUTAZIONE ---------- */

#bottoni-anki {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 18px;
}

.anki-btn {
    --c: var(--neutral);
    padding: 15px 10px;
    border-radius: var(--radius);
    border: 1px solid color-mix(in srgb, var(--c) 45%, transparent);
    background: color-mix(in srgb, var(--c) 12%, transparent);
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.anki-btn:hover {
    background: color-mix(in srgb, var(--c) 22%, transparent);
    border-color: var(--c);
}

.anki-btn:active {
    transform: scale(0.97);
}

#btn-corretto  { --c: var(--ok); }
#btn-insicuro  { --c: var(--warn); }
#btn-sbagliato { --c: var(--bad); }
#btn-nonricordo { --c: var(--neutral); }

#btn-segnala {
    background: transparent;
    border: none;
    color: var(--text-faint);
    font-size: 0.78rem;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
    padding: 6px 10px;
    transition: color 0.2s ease;
}

#btn-segnala:hover {
    color: var(--text-soft);
}

/* ---------- MOBILE ---------- */

@media (max-width: 480px) {
    #schermata-home header {
        padding-top: calc(36px + env(safe-area-inset-top));
        padding-bottom: 26px;
    }
    #schermata-home header h1 { font-size: 2.3rem; }
    #schermata-home header p { font-size: 1.08rem; }

    #filtri { padding: 26px 18px 22px; }
    #card-frase { padding: 36px 18px 30px; }

    #titolo-risposta { font-size: 1.6rem; }

    #schermata-gioco header h1 { font-size: 1.25rem; }
}

/* ---------- ACCESSIBILITÀ ---------- */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
    }
}

/* ---------- FRASE ---------- */

#testo-frase {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 1.75rem;
    line-height: 1.35;
    color: var(--text);
    margin: 4px 0 6px;
}

#testo-frase::before { content: "\201C"; color: var(--gold); }
#testo-frase::after  { content: "\201D"; color: var(--gold); }

#genere-risposta {
    display: inline-block;
    margin-bottom: 26px;
    padding: 4px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--text-soft);
    font-size: 0.74rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

@media (max-width: 480px) {
    #testo-frase { font-size: 1.45rem; }
}

#traduzione-risposta {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.4;
    color: var(--text-soft);
    margin: -6px 0 24px;
}

#traduzione-risposta:empty {
    display: none;
}

/* ---------- PAGINA DI UN LIBRO ---------- */

#link-home {
    position: absolute;
    left: 16px;
    top: 50%;
    margin-top: calc(env(safe-area-inset-top) / 2);
    transform: translateY(-50%);
    border: 1px solid var(--line-strong);
    color: var(--gold-light);
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-decoration: none;
    transition: background 0.2s ease, border-color 0.2s ease;
}

#link-home:hover {
    background: rgba(31, 74, 58, 0.08);
    border-color: var(--gold);
}

.presentazione {
    text-align: center;
    margin-bottom: 28px;
}

.presentazione h2 {
    font-size: 2.2rem;
    line-height: 1.1;
    color: var(--gold-light);
    margin-bottom: 6px;
}

.sotto {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 1.1rem;
    color: var(--text-soft);
    margin-bottom: 14px;
}

.presentazione p:last-child {
    color: var(--text-soft);
}

#scelte {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 28px;
}

#scelte .anki-btn {
    --c: var(--gold);
    padding: 16px 10px;
}

#btn-avanti,
#btn-ricomincia {
    display: block;
    width: 100%;
    padding: 15px;
    margin-top: 18px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: var(--radius);
    color: var(--gold-light);
    background: transparent;
    border: 1px solid var(--line-strong);
    transition: background 0.2s ease, border-color 0.2s ease;
}

#btn-avanti:hover,
#btn-ricomincia:hover {
    background: rgba(31, 74, 58, 0.07);
    border-color: var(--gold);
}

#risposta #traduzione-risposta {
    margin: 4px 0 20px;
}

#fine {
    background: linear-gradient(180deg, var(--surface), var(--bg-alt));
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    padding: 34px 22px 26px;
    text-align: center;
    box-shadow: 0 24px 60px rgba(70, 50, 20, 0.14);
    animation: entra 0.35s ease both;
}

#punteggio {
    color: var(--gold-light);
    margin-bottom: 10px;
}

#commento-fine {
    color: var(--text-soft);
    margin-bottom: 24px;
}

.bottone-principale {
    display: block;
    padding: 18px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius);
    color: var(--on-accent);
    background: linear-gradient(180deg, var(--gold-light), var(--gold));
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.18) inset,
        0 10px 28px rgba(31, 74, 58, 0.22);
    transition: filter 0.2s ease;
}

.bottone-principale:hover {
    filter: brightness(1.06);
}

.citazioni {
    margin-top: 44px;
}

.citazioni h2 {
    margin-bottom: 6px;
}

.citazioni .sotto {
    text-align: center;
    margin-bottom: 22px;
}

.citazioni blockquote {
    padding: 18px 20px;
    margin-bottom: 12px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-left: 2px solid var(--gold);
    border-radius: var(--radius);
}

.citazioni blockquote .en {
    font-family: var(--font-display);
    font-size: 1.25rem;
    line-height: 1.35;
    color: var(--text);
    margin-bottom: 6px;
}

.citazioni blockquote .it {
    font-size: 0.92rem;
    color: var(--text-soft);
}

.invito {
    margin-top: 40px;
    text-align: center;
}

.invito p {
    color: var(--text-soft);
    margin-bottom: 18px;
}

@media (max-width: 480px) {
    .presentazione h2 { font-size: 1.8rem; }
    #schermata-gioco header {
        justify-content: flex-start;
        padding-left: 112px;
        padding-right: 12px;
    }
    #schermata-gioco header h1 { font-size: 1.1rem; }
}

/* ---------- ILLUSTRAZIONE ALLA RIVELAZIONE ---------- */

#illustrazione {
    margin: -6px 0 16px;
}

#illustrazione:empty {
    display: none;
}

#illustrazione svg {
    display: block;
    width: 100%;
    height: auto;
    max-height: 190px;
    animation: entra 0.5s ease both;
}

/* Quinto bottone: occupa tutta la riga */
#btn-nonsapevo { --c: var(--sepia); grid-column: 1 / -1; }

/* Bandierine 3D per la lingua dell'interfaccia */
#sel-interfaccia { position: absolute; top: 12px; right: 12px; display: flex; gap: 8px; z-index: 5; }
#sel-interfaccia button {
    width: 42px; height: 42px; padding: 0; border-radius: 50%; cursor: pointer; position: relative;
    border: 3px solid #fff; overflow: hidden;
    box-shadow: 0 5px 0 rgba(0,0,0,.35), 0 8px 12px rgba(0,0,0,.25), inset 0 -4px 6px rgba(0,0,0,.25);
    transition: transform .08s, box-shadow .08s;
    opacity: .75;
}
#sel-interfaccia button svg { width: 100%; height: 100%; display: block; }
#sel-interfaccia button::after {
    content: ''; position: absolute; inset: 0; border-radius: 50%; pointer-events: none;
    background: radial-gradient(circle at 32% 22%, rgba(255,255,255,.65), rgba(255,255,255,0) 55%);
}
#sel-interfaccia button.attivo { opacity: 1; outline: 3px solid var(--gold); outline-offset: 2px; }
#sel-interfaccia button:active { transform: translateY(4px); box-shadow: 0 1px 0 rgba(0,0,0,.35), 0 2px 4px rgba(0,0,0,.25), inset 0 -4px 6px rgba(0,0,0,.25); }
#schermata-home header { position: relative; padding-top: 64px; }
.filtro-gruppo.nascosto { display: none; }

/* ---------- Scelte a bottoni ---------- */
.suggerimento { color: var(--text-soft); font-size: .88rem; line-height: 1.4; margin: 0 0 16px; text-align: center; }
.chips .suggerimento { text-align: left; margin: 2px 0 0; font-style: italic; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
    padding: 9px 14px; border-radius: 999px; cursor: pointer;
    border: 1px solid var(--line-strong); background: var(--surface-2); color: var(--text);
    font: 500 .92rem 'Inter', sans-serif; line-height: 1.2;
    transition: background .15s, color .15s, transform .08s;
}
.chip:hover { background: var(--bg-alt); }
.chip:active { transform: scale(.97); }
.chip.on { background: var(--gold); color: var(--on-accent); border-color: var(--gold); }

/* ---------- Grafico delle risposte ---------- */
#statistiche {
    max-width: 560px; margin: 0 auto; padding: 0 20px 48px;
}
#statistiche h3 {
    font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; color: var(--text);
    text-align: center; margin-bottom: 12px;
}
#stat-grafico {
    display: flex; gap: 8px; align-items: flex-end; justify-content: space-between;
    padding: 16px 12px 12px; border-radius: var(--radius-lg);
    background: linear-gradient(180deg, var(--surface), var(--bg-alt)); border: 1px solid var(--line);
}
.stat-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; min-width: 0; }
.stat-pct { font: 700 .85rem 'Inter', sans-serif; color: var(--text); }
.stat-asta { width: 100%; max-width: 44px; height: 110px; display: flex; align-items: flex-end;
    background: rgba(90,68,34,.08); border-radius: 8px 8px 4px 4px; overflow: hidden; }
.stat-riempi { width: 100%; border-radius: 8px 8px 0 0; background: var(--c); transition: height .5s ease; min-height: 2px; }
.stat-nome { font: 600 .66rem 'Inter', sans-serif; color: var(--text-soft); text-align: center; line-height: 1.15; min-height: 2.3em; }
.stat-n { font: 500 .72rem 'Inter', sans-serif; color: var(--text-faint); }
.stat-corretto { --c: var(--ok); }
.stat-insicuro { --c: var(--warn); }
.stat-sbagliato { --c: var(--bad); }
.stat-nonricordavo { --c: var(--neutral); }
.stat-nonsapevo { --c: var(--sepia); }

/* Su schermi larghi il grafico sta a sinistra */
@media (min-width: 1000px) {
    #statistiche { position: fixed; left: 28px; top: 120px; width: 300px; padding: 0; margin: 0; }
}

/* Collegamento IT/EN nelle pagine dei libri */
.lang-riga { text-align: right; margin: 0 0 8px; }
.lang-link {
    display: inline-block; color: var(--gold-light); font-size: .85rem; font-weight: 600; text-decoration: none;
    border: 1px solid var(--line-strong); padding: 6px 12px; border-radius: 999px;
}
.indice-libri { list-style: none; padding: 0; margin: 0; }
.indice-libri li { margin: 0; border-bottom: 1px solid var(--line); }
.indice-libri a { display: flex; justify-content: space-between; gap: 12px; padding: 12px 4px; color: var(--text); text-decoration: none; }
.indice-libri a:hover { color: var(--gold); }
.indice-libri small { color: var(--text-soft); text-align: right; }

.nota-libro { color: var(--gold); font-weight: 600; font-size: .9rem; text-align: center; margin: 4px 0 8px; }
.nota-libro:empty { display: none; }
#quiz #btn-mostra-risposta { margin-top: 16px; }


/* Pie di pagina con i collegamenti legali */
#pie-pagina {
    max-width: 640px;
    margin: 2.5rem auto 2rem;
    padding: 0 1rem;
    text-align: center;
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: var(--text-faint);
}
#pie-pagina a {
    color: var(--text-soft);
    text-decoration: underline;
    margin: 0 0.35rem;
}
#pie-pagina a:hover {
    color: var(--gold);
}