/* ================================================================
   PWA Install Overlay – Secretum Key of Acquaviva
   ================================================================ */

#sk-install-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    padding: 16px;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

#sk-install-overlay.sk-hidden {
    display: none;
}

#sk-install-box {
    background: #FFFBF5;
    border-radius: 20px;
    padding: 32px 28px 28px;
    max-width: 380px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.35);
    position: relative;
}

#sk-install-box img.sk-app-icon {
    width: 88px;
    height: 88px;
    border-radius: 20px;
    margin-bottom: 16px;
    box-shadow: 0 4px 16px rgba(0,170,255,0.25);
}

#sk-install-box h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0 0 8px;
}

#sk-install-box .sk-subtitle {
    font-size: 0.92rem;
    color: #555;
    margin: 0 0 24px;
    line-height: 1.5;
}

/* ── Pulsante principale ── */
#sk-btn-install {
    display: block;
    width: 100%;
    padding: 14px 20px;
    background: #00AAFF;
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    margin-bottom: 10px;
    transition: background 0.2s, transform 0.1s;
    letter-spacing: 0.3px;
}

#sk-btn-install:hover  { background: #0099ee; }
#sk-btn-install:active { transform: scale(0.97); }

/* ── Pulsante secondario ── */
#sk-btn-continue {
    display: block;
    width: 100%;
    padding: 11px 20px;
    background: transparent;
    color: #888;
    border: 1.5px solid #ddd;
    border-radius: 12px;
    font-size: 0.88rem;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}

#sk-btn-continue:hover { border-color: #aaa; color: #555; }

/* ── Istruzioni iOS ── */
#sk-install-ios-steps {
    background: #f0f7ff;
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 16px;
    text-align: left;
}

#sk-install-ios-steps ol {
    margin: 0;
    padding-left: 18px;
}

#sk-install-ios-steps li {
    font-size: 0.88rem;
    color: #333;
    line-height: 1.6;
    margin-bottom: 4px;
}

#sk-install-ios-steps li strong {
    color: #00AAFF;
}

.sk-share-icon {
    display: inline-block;
    width: 18px;
    height: 18px;
    vertical-align: middle;
    margin: 0 2px;
}

/* ── Istruzioni altri browser ── */
#sk-install-other-steps {
    background: #f5f5f5;
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 16px;
    text-align: left;
    font-size: 0.88rem;
    color: #444;
    line-height: 1.6;
}

/* ── Badge "già installata" ── */
#sk-install-badge {
    display: inline-block;
    background: #e8f9f0;
    color: #00b65b;
    border-radius: 8px;
    padding: 4px 10px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 12px;
}

/* ── Freccia iOS in basso ── */
.sk-ios-arrow {
    position: fixed;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    background: #00AAFF;
    color: #fff;
    padding: 8px 16px 24px;
    border-radius: 12px 12px 0 0;
    font-size: 0.82rem;
    font-weight: 600;
    text-align: center;
    animation: sk-bounce 1.5s infinite;
    pointer-events: none;
    z-index: 100000;
    display: none;
}

@keyframes sk-bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%       { transform: translateX(-50%) translateY(-6px); }
}