/* Isabella – grafica e layout */

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { width: 100%; height: 100%; overflow: hidden; user-select: none; touch-action: manipulation; }
body {
    position: relative;
    font-family: -apple-system, sans-serif;
    background: #020204;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: clamp(2px, 0.5vmin, 8px) clamp(12px, 2vw, 24px) clamp(10px, 2vmin, 20px);
    min-height: 100vh;
    gap: clamp(2px, 0.5vmin, 8px);
}

/* Sfondo: notte spazio profondo + aurora, dinamico */

/* Base spazio: stelle (puntini bianchi) + nebulose scure + tocchi rosso/rosa */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        /* Stelle: puntini bianchi variabili (luminosità e dimensione) – effetto spazio profondo */
        radial-gradient(circle at 8% 12%, rgba(255,255,255,0.85) 0, transparent 0.8px),
        radial-gradient(circle at 92% 7%, rgba(255,255,255,0.5) 0, transparent 0.6px),
        radial-gradient(circle at 15% 88%, rgba(255,255,255,0.4) 0, transparent 0.5px),
        radial-gradient(circle at 78% 93%, rgba(255,255,255,0.7) 0, transparent 0.7px),
        radial-gradient(circle at 45% 22%, rgba(255,255,255,0.35) 0, transparent 0.5px),
        radial-gradient(circle at 55% 67%, rgba(255,255,255,0.6) 0, transparent 0.6px),
        radial-gradient(circle at 22% 45%, rgba(255,255,255,0.45) 0, transparent 0.55px),
        radial-gradient(circle at 88% 38%, rgba(255,255,255,0.3) 0, transparent 0.5px),
        radial-gradient(circle at 5% 55%, rgba(255,255,255,0.55) 0, transparent 0.6px),
        radial-gradient(circle at 95% 72%, rgba(255,255,255,0.4) 0, transparent 0.5px),
        radial-gradient(circle at 33% 8%, rgba(255,255,255,0.65) 0, transparent 0.7px),
        radial-gradient(circle at 67% 85%, rgba(255,255,255,0.35) 0, transparent 0.5px),
        radial-gradient(circle at 12% 28%, rgba(255,255,255,0.5) 0, transparent 0.55px),
        radial-gradient(circle at 82% 52%, rgba(255,255,255,0.45) 0, transparent 0.5px),
        radial-gradient(circle at 38% 75%, rgba(255,255,255,0.7) 0, transparent 0.65px),
        radial-gradient(circle at 62% 15%, rgba(255,255,255,0.25) 0, transparent 0.45px),
        radial-gradient(circle at 25% 62%, rgba(255,255,255,0.6) 0, transparent 0.6px),
        radial-gradient(circle at 72% 42%, rgba(255,255,255,0.4) 0, transparent 0.5px),
        radial-gradient(circle at 3% 78%, rgba(255,255,255,0.5) 0, transparent 0.55px),
        radial-gradient(circle at 97% 25%, rgba(255,255,255,0.35) 0, transparent 0.5px),
        radial-gradient(circle at 48% 48%, rgba(255,255,255,0.55) 0, transparent 0.6px),
        radial-gradient(circle at 18% 18%, rgba(255,255,255,0.3) 0, transparent 0.5px),
        radial-gradient(circle at 85% 68%, rgba(255,255,255,0.65) 0, transparent 0.65px),
        radial-gradient(circle at 52% 35%, rgba(255,255,255,0.4) 0, transparent 0.5px),
        radial-gradient(circle at 28% 92%, rgba(255,255,255,0.45) 0, transparent 0.55px),
        radial-gradient(circle at 75% 5%, rgba(255,255,255,0.6) 0, transparent 0.6px),
        radial-gradient(circle at 42% 58%, rgba(255,255,255,0.35) 0, transparent 0.5px),
        radial-gradient(circle at 58% 82%, rgba(255,255,255,0.5) 0, transparent 0.55px),
        radial-gradient(circle at 8% 42%, rgba(255,255,255,0.45) 0, transparent 0.5px),
        radial-gradient(circle at 92% 58%, rgba(255,255,255,0.6) 0, transparent 0.6px),
        radial-gradient(circle at 35% 32%, rgba(255,255,255,0.25) 0, transparent 0.45px),
        radial-gradient(circle at 68% 72%, rgba(255,255,255,0.7) 0, transparent 0.7px),
        radial-gradient(circle at 2% 35%, rgba(255,255,255,0.4) 0, transparent 0.5px),
        radial-gradient(circle at 98% 82%, rgba(255,255,255,0.5) 0, transparent 0.55px),
        radial-gradient(circle at 15% 72%, rgba(255,255,255,0.55) 0, transparent 0.6px),
        radial-gradient(circle at 88% 18%, rgba(255,255,255,0.35) 0, transparent 0.5px),
        radial-gradient(circle at 55% 42%, rgba(255,255,255,0.45) 0, transparent 0.5px),
        radial-gradient(circle at 32% 88%, rgba(255,255,255,0.6) 0, transparent 0.6px),
        radial-gradient(circle at 72% 55%, rgba(255,255,255,0.3) 0, transparent 0.5px),
        radial-gradient(circle at 45% 5%, rgba(255,255,255,0.65) 0, transparent 0.65px),
        radial-gradient(circle at 62% 95%, rgba(255,255,255,0.4) 0, transparent 0.5px),
        radial-gradient(circle at 18% 52%, rgba(255,255,255,0.5) 0, transparent 0.55px),
        radial-gradient(circle at 82% 78%, rgba(255,255,255,0.55) 0, transparent 0.6px),
        radial-gradient(circle at 5% 92%, rgba(255,255,255,0.35) 0, transparent 0.5px),
        radial-gradient(circle at 95% 12%, rgba(255,255,255,0.75) 0, transparent 0.7px),
        radial-gradient(circle at 48% 65%, rgba(255,255,255,0.4) 0, transparent 0.5px),
        radial-gradient(circle at 25% 38%, rgba(255,255,255,0.6) 0, transparent 0.6px),
        radial-gradient(circle at 78% 28%, rgba(255,255,255,0.45) 0, transparent 0.55px),
        /* Altre stelle + alcune più grandi e luminose (effetto stella/galassia) */
        radial-gradient(circle at 7% 65%, rgba(255,255,255,0.9) 0, transparent 1.2px),
        radial-gradient(circle at 91% 44%, rgba(255,255,255,0.88) 0, transparent 1.1px),
        radial-gradient(circle at 42% 18%, rgba(255,255,255,0.92) 0, transparent 1.3px),
        radial-gradient(circle at 58% 88%, rgba(255,255,255,0.85) 0, transparent 1px),
        radial-gradient(circle at 23% 35%, rgba(255,255,255,0.4) 0, transparent 0.5px),
        radial-gradient(circle at 76% 62%, rgba(255,255,255,0.35) 0, transparent 0.5px),
        radial-gradient(circle at 11% 82%, rgba(255,255,255,0.5) 0, transparent 0.6px),
        radial-gradient(circle at 86% 9%, rgba(255,255,255,0.55) 0, transparent 0.6px),
        radial-gradient(circle at 51% 52%, rgba(255,255,255,0.95) 0, transparent 1.4px),
        radial-gradient(circle at 34% 12%, rgba(255,255,255,0.6) 0, transparent 0.65px),
        radial-gradient(circle at 69% 78%, rgba(255,255,255,0.45) 0, transparent 0.55px),
        radial-gradient(circle at 4% 28%, rgba(255,255,255,0.7) 0, transparent 0.9px),
        radial-gradient(circle at 96% 62%, rgba(255,255,255,0.65) 0, transparent 0.8px),
        radial-gradient(circle at 19% 58%, rgba(255,255,255,0.38) 0, transparent 0.5px),
        radial-gradient(circle at 81% 32%, rgba(255,255,255,0.5) 0, transparent 0.55px),
        radial-gradient(circle at 47% 78%, rgba(255,255,255,0.88) 0, transparent 1.1px),
        radial-gradient(circle at 63% 8%, rgba(255,255,255,0.42) 0, transparent 0.5px),
        radial-gradient(circle at 29% 82%, rgba(255,255,255,0.55) 0, transparent 0.6px),
        radial-gradient(circle at 74% 48%, rgba(255,255,255,0.9) 0, transparent 1.15px),
        radial-gradient(circle at 14% 38%, rgba(255,255,255,0.3) 0, transparent 0.45px),
        radial-gradient(circle at 89% 86%, rgba(255,255,255,0.6) 0, transparent 0.7px),
        radial-gradient(circle at 56% 28%, rgba(255,255,255,0.35) 0, transparent 0.5px),
        radial-gradient(circle at 38% 62%, rgba(255,255,255,0.75) 0, transparent 0.95px),
        radial-gradient(circle at 71% 22%, rgba(255,255,255,0.48) 0, transparent 0.55px),
        radial-gradient(circle at 9% 95%, rgba(255,255,255,0.5) 0, transparent 0.6px),
        radial-gradient(circle at 93% 35%, rgba(255,255,255,0.82) 0, transparent 1px),
        radial-gradient(circle at 44% 42%, rgba(255,255,255,0.4) 0, transparent 0.5px),
        radial-gradient(circle at 66% 58%, rgba(255,255,255,0.58) 0, transparent 0.65px),
        radial-gradient(circle at 27% 15%, rgba(255,255,255,0.7) 0, transparent 0.85px),
        radial-gradient(circle at 52% 92%, rgba(255,255,255,0.45) 0, transparent 0.55px),
        /* Altre stelle piccole (più visibili: opacità aumentata) */
        radial-gradient(circle at 6% 34%, rgba(255,255,255,0.6) 0, transparent 0.5px),
        radial-gradient(circle at 41% 7%, rgba(255,255,255,0.52) 0, transparent 0.45px),
        radial-gradient(circle at 94% 51%, rgba(255,255,255,0.58) 0, transparent 0.48px),
        radial-gradient(circle at 17% 76%, rgba(255,255,255,0.65) 0, transparent 0.52px),
        radial-gradient(circle at 73% 19%, rgba(255,255,255,0.55) 0, transparent 0.45px),
        radial-gradient(circle at 59% 44%, rgba(255,255,255,0.62) 0, transparent 0.5px),
        radial-gradient(circle at 31% 56%, rgba(255,255,255,0.5) 0, transparent 0.43px),
        radial-gradient(circle at 86% 73%, rgba(255,255,255,0.64) 0, transparent 0.51px),
        radial-gradient(circle at 11% 94%, rgba(255,255,255,0.53) 0, transparent 0.45px),
        radial-gradient(circle at 64% 3%, rgba(255,255,255,0.59) 0, transparent 0.48px),
        radial-gradient(circle at 49% 39%, rgba(255,255,255,0.56) 0, transparent 0.46px),
        radial-gradient(circle at 24% 21%, rgba(255,255,255,0.61) 0, transparent 0.5px),
        radial-gradient(circle at 79% 61%, rgba(255,255,255,0.52) 0, transparent 0.43px),
        radial-gradient(circle at 3% 59%, rgba(255,255,255,0.66) 0, transparent 0.52px),
        radial-gradient(circle at 97% 16%, rgba(255,255,255,0.58) 0, transparent 0.47px),
        radial-gradient(circle at 36% 84%, rgba(255,255,255,0.51) 0, transparent 0.43px),
        radial-gradient(circle at 68% 37%, rgba(255,255,255,0.6) 0, transparent 0.49px),
        radial-gradient(circle at 52% 71%, rgba(255,255,255,0.54) 0, transparent 0.45px),
        radial-gradient(circle at 19% 43%, rgba(255,255,255,0.63) 0, transparent 0.5px),
        radial-gradient(circle at 84% 28%, rgba(255,255,255,0.57) 0, transparent 0.46px),
        radial-gradient(circle at 8% 68%, rgba(255,255,255,0.53) 0, transparent 0.44px),
        radial-gradient(circle at 91% 79%, rgba(255,255,255,0.61) 0, transparent 0.5px),
        radial-gradient(circle at 44% 14%, rgba(255,255,255,0.51) 0, transparent 0.42px),
        radial-gradient(circle at 57% 86%, rgba(255,255,255,0.59) 0, transparent 0.48px),
        radial-gradient(circle at 26% 49%, rgba(255,255,255,0.56) 0, transparent 0.45px),
        radial-gradient(circle at 71% 52%, rgba(255,255,255,0.62) 0, transparent 0.5px),
        radial-gradient(circle at 14% 11%, rgba(255,255,255,0.58) 0, transparent 0.47px),
        radial-gradient(circle at 62% 64%, rgba(255,255,255,0.52) 0, transparent 0.43px),
        radial-gradient(circle at 39% 29%, rgba(255,255,255,0.64) 0, transparent 0.51px),
        radial-gradient(circle at 76% 88%, rgba(255,255,255,0.54) 0, transparent 0.45px),
        radial-gradient(circle at 2% 82%, rgba(255,255,255,0.6) 0, transparent 0.49px),
        radial-gradient(circle at 98% 43%, rgba(255,255,255,0.5) 0, transparent 0.41px),
        /* Nebulose molto scure – spazio profondo, tocchi rosso/rosa minimi */
        radial-gradient(ellipse 100% 70% at 75% 25%, rgba(80, 15, 25, 0.04) 0%, transparent 45%),
        radial-gradient(ellipse 80% 90% at 15% 65%, rgba(60, 10, 35, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse 120% 80% at 20% 20%, rgba(12, 10, 28, 0.8) 0%, transparent 50%),
        radial-gradient(ellipse 100% 60% at 80% 70%, rgba(5, 8, 18, 0.85) 0%, transparent 45%),
        radial-gradient(ellipse 80% 100% at 60% 30%, rgba(22, 18, 48, 0.5) 0%, transparent 40%),
        radial-gradient(ellipse 90% 50% at 50% 80%, rgba(15, 6, 22, 0.35) 0%, transparent 45%),
        linear-gradient(180deg, #020204 0%, #040308 20%, #030206 40%, #040308 60%, #020204 80%, #020204 100%);
    background-size: 100% 100%;
    background-position: 0% 0%;
}

/* Aurora: molto leggera, movimento molto dinamico */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse 70% 35% at 85% 35%, rgba(244, 114, 182, 0.04) 0%, transparent 45%),
        radial-gradient(ellipse 90% 40% at 70% 15%, rgba(34, 197, 94, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 70% 50% at 20% 40%, rgba(6, 182, 212, 0.05) 0%, transparent 45%),
        radial-gradient(ellipse 80% 35% at 50% 25%, rgba(168, 85, 247, 0.04) 0%, transparent 45%),
        radial-gradient(ellipse 60% 60% at 85% 60%, rgba(34, 197, 94, 0.03) 0%, transparent 50%);
    background-size: 100% 100%;
    background-position: 0% 0%;
    will-change: transform, opacity;
    transform: translate3d(0, 0, 0) scale(1);
    animation: auroraBreathe 3.2s ease-in-out infinite;
    pointer-events: none;
}

@keyframes auroraBreathe {
    0%, 100% {
        opacity: 0.78;
        transform: translate3d(0, 0, 0) scale(1);
    }
    12% {
        opacity: 0.88;
        transform: translate3d(-2.2vmin, 1.2vmin, 0) scale(1.04);
    }
    25% {
        opacity: 0.82;
        transform: translate3d(2vmin, -1.5vmin, 0) scale(1.055);
    }
    37% {
        opacity: 0.9;
        transform: translate3d(1.2vmin, 1.4vmin, 0) scale(1.03);
    }
    50% {
        opacity: 0.8;
        transform: translate3d(-1.8vmin, -1vmin, 0) scale(1.048);
    }
    62% {
        opacity: 0.86;
        transform: translate3d(1.5vmin, -1.2vmin, 0) scale(1.038);
    }
    75% {
        opacity: 0.84;
        transform: translate3d(-1.2vmin, 1vmin, 0) scale(1.052);
    }
    87% {
        opacity: 0.88;
        transform: translate3d(0.9vmin, 0.8vmin, 0) scale(1.025);
    }
}

/* Azzurro di default (sempre, tranne quando ascolta) */
#avatar-container {
    filter: drop-shadow(0 0 40px rgba(56,189,248,0.9));
    transition: filter 0.3s, transform 0.3s;
}
/* Verde solo quando tieni premuto (sta ascoltando) */
#avatar-container.listening {
    filter: drop-shadow(0 0 115px rgba(34, 197, 94, 1));
    animation: auraPulse 2.4s ease-in-out infinite;
}
@keyframes auraPulse {
    0%, 100% { transform: scale(1.04); }
    50% { transform: scale(1.08); }
}
/* Arancione quando risponde (voce) */
#avatar-container.speaking {
    animation: auraPulseOrange 1s ease-in-out infinite;
}
@keyframes auraPulseOrange {
    0%, 100% { filter: drop-shadow(0 0 50px rgba(251, 146, 60, 0.9)); }
    50% { filter: drop-shadow(0 0 85px rgba(251, 146, 60, 0.98)); }
}

/* Il canvas non deve bloccare i tap: passano al body per avviare la registrazione */
#avatar {
    width: 100%;
    height: 100%;
    pointer-events: none;
}

#status {
    position: relative;
    text-align: center;
    padding: clamp(8px, 1.4vmin, 14px) clamp(16px, 2.8vmin, 28px);
    font-size: clamp(12px, 1.9vmin, 19px);
    flex-shrink: 0;
    color: #888;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    /* Rettangolo grande quanto la frase, stesso stile vetro della chat */
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: clamp(18px, 2.6vmin, 28px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
    overflow: hidden;
}

/* Sfumatura bordo come la chat */
#status::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 0%, transparent 10%, transparent 90%, rgba(255, 255, 255, 0.03) 100%),
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 0%, transparent 10%, transparent 90%, rgba(255, 255, 255, 0.03) 100%);
    pointer-events: none;
}
.status-error { color: #ef4444 !important; }
/* Verde solo quando tieni premuto (ascoltando) */
.status-ok { color: #22c55e !important; }
/* Arancione in tutti gli altri casi */
.status-thinking { color: #fbbf24 !important; }

#chat {
    width: 98%;
    max-width: min(1280px, 98vw);
    flex: 1;
    min-height: 36vh;
    overflow: hidden;
    margin-top: clamp(8px, 1.5vmin, 18px);
    margin-bottom: clamp(6px, 1.2vmin, 14px);
    border-radius: clamp(18px, 2.6vmin, 28px);
    gap: clamp(10px, 1.9vmin, 26px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    /* Vetro completamente trasparente, solo riflessi luce */
    padding: clamp(14px, 2.6vmin, 26px);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: clamp(18px, 2.6vmin, 28px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

/* Sfumatura leggera sul bordo verso l'interno: effetto vetro */
#chat::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 0%, transparent 10%, transparent 90%, rgba(255, 255, 255, 0.03) 100%),
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 0%, transparent 10%, transparent 90%, rgba(255, 255, 255, 0.03) 100%);
    pointer-events: none;
}

.chat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(5px, 1.3vmin, 13px);
    width: 100%;
}

.chat-user {
    font-size: clamp(19px, 3.4vmin, 36px);
    color: #9ca3af;
}

.chat-user::before {
    content: "Tu: ";
    color: #6b7280;
}

.chat-assistant {
    font-size: clamp(23px, 3.9vmin, 42px);
    color: #fff;
    font-weight: 500;
}

.chat-assistant::before {
    content: "Isabella: ";
    color: #fbbf24;
}

/* Stesse proporzioni ovunque: vmin = scala con il lato più piccolo (in orizzontale segue l'altezza). -15% da precedente. */
#avatar-container {
    width: clamp(255px, 54vmin, 612px);
    height: clamp(255px, 54vmin, 612px);
    flex-shrink: 0;
}


/* ------------------------------------------------------------------ */
/* Attivazione tablet: schermata a tutto schermo con il campo codice   */
/* ------------------------------------------------------------------ */
.activation-screen {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(2, 2, 4, 0.96);
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: text;
}
.activation-screen.hidden { display: none; }
.activation-card {
    width: min(92vw, 420px);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 18px;
    padding: 28px 24px;
    text-align: center;
    backdrop-filter: blur(6px);
}
.activation-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; }
.activation-sub { color: rgba(255, 255, 255, 0.7); font-size: 0.95rem; margin-bottom: 20px; }
#activation-code {
    width: 100%;
    padding: 14px;
    font-size: 1.4rem;
    letter-spacing: 0.15em;
    text-align: center;
    text-transform: uppercase;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 12px;
    outline: none;
}
#activation-code:focus { border-color: #7dd3fc; }
#activation-submit {
    width: 100%;
    margin-top: 14px;
    padding: 14px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #04121f;
    background: #7dd3fc;
    border: none;
    border-radius: 12px;
    cursor: pointer;
}
#activation-submit:active { transform: scale(0.98); }
.activation-error { margin-top: 12px; min-height: 1.2em; color: #fda4af; font-size: 0.95rem; }

/* ------------------------------------------------------------------ */
/* Selettore lingua: due bandiere in basso a destra (italiano default) */
/* ------------------------------------------------------------------ */
#lang-switch {
    position: fixed;
    right: clamp(12px, 2vw, 30px);
    bottom: clamp(12px, 2.2vh, 30px);
    z-index: 60;
    display: flex;
    gap: clamp(8px, 1.4vmin, 14px);
}
.lang-btn {
    width: clamp(46px, 7vmin, 66px);
    height: clamp(31px, 4.7vmin, 44px);
    padding: 0;
    border: 2px solid rgba(255, 255, 255, 0.22);
    border-radius: 9px;
    background: transparent;
    overflow: hidden;
    cursor: pointer;
    /* Non selezionata: spenta e un po' desaturata */
    opacity: 0.4;
    filter: grayscale(0.5);
    transition: opacity 0.2s, filter 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
    -webkit-tap-highlight-color: transparent;
}
.lang-btn svg { display: block; width: 100%; height: 100%; }
/* Selezionata: piena, bordo azzurro, leggermente sollevata */
.lang-btn.selected {
    opacity: 1;
    filter: none;
    border-color: #7dd3fc;
    box-shadow: 0 0 0 2px rgba(125, 211, 252, 0.4), 0 6px 16px rgba(0, 0, 0, 0.45);
    transform: translateY(-2px) scale(1.06);
}
.lang-btn:active { transform: scale(0.95); }

/* Prefisso della chat in inglese quando la lingua scelta è EN ("Tu:" -> "You:") */
body[data-lang="en"] .chat-user::before { content: "You: "; }