/* PWA 現代化安裝彈窗樣式（pwa-install-overlay） */
.pwa-install-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(40,40,40,.7);z-index:99999;display:none;justify-content:center;align-items:center;backdrop-filter:blur(5px);opacity:0;transition:opacity .3s ease}
.pwa-install-overlay.active{display:flex;opacity:1;-webkit-animation:fadeIn .3s ease 1;animation:fadeIn .3s ease 1}
.pwa-install-modal{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.3);width:90%;max-width:400px;overflow:hidden;transform:translateY(20px);transition:transform .3s ease}
.pwa-install-overlay.active .pwa-install-modal{transform:translateY(0);-webkit-animation:slideUp .4s cubic-bezier(0.175,.885,.32,1.275) 1;animation:slideUp .4s cubic-bezier(0.175,.885,.32,1.275) 1}
.pwa-install-header{display:flex;align-items:center;padding:20px 20px 15px;position:relative;border-bottom:1px solid #f0f0f0}
.pwa-install-icon{width:50px;height:50px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-right:15px}
.pwa-install-icon svg{width:24px;height:24px;fill:#fff}
.pwa-install-title{font-size:18px;font-weight:700;color:#333;margin:0;flex:1}
.pwa-install-close{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background-color .2s}
.pwa-install-close:hover{background-color:#f5f5f5}
.pwa-install-close svg{width:16px;height:16px}
.pwa-install-body{padding:20px}
.pwa-install-info{color:#666;line-height:1.5;margin-bottom:25px;font-size:15px;text-align:center}
.pwa-install-buttons{display:flex;gap:12px}
.pwa-install-buttons.column{flex-direction:column}
.pwa-install-btn{flex:1;padding:14px 20px;border-radius:12px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease;border:none;outline:none;display:flex;align-items:center;justify-content:center}
.pwa-install-btn.pwa-install-primary{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff}
.pwa-install-btn.pwa-install-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(102,126,234,.4)}
.pwa-install-btn.pwa-install-primary:active{transform:translateY(0)}
.pwa-install-btn.pwa-install-secondary{background:#f5f5f5;color:#666}
.pwa-install-btn.pwa-install-secondary:hover{background:#e8e8e8}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}