/* ═══════════════════════════════════════════
   SEACLOUDY PWA — Install Banner + iOS Prompt
   Premium design, dismissable, smart timing
   ═══════════════════════════════════════════ */

/* ─── Install Banner (Android/Desktop) ─── */
.nx-pwa-banner{position:fixed;bottom:0;left:0;right:0;z-index:9000;padding:12px 16px 16px;transform:translateY(110%);transition:transform .4s cubic-bezier(.32,.72,0,1);pointer-events:none}
.nx-pwa-banner.show{transform:translateY(0);pointer-events:all}
.nx-pwa-card{max-width:480px;margin:0 auto;background:linear-gradient(135deg,#0f172a 0%,#1e293b 100%);border:1px solid rgba(96,165,250,.15);border-radius:20px;padding:20px;display:flex;align-items:center;gap:16px;box-shadow:0 -8px 40px rgba(0,0,0,.4),0 0 60px rgba(37,99,235,.08);backdrop-filter:blur(16px)}
.nx-pwa-icon{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,#1E3A5F,#2563EB);display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 4px 20px rgba(37,99,235,.3)}
.nx-pwa-info{flex:1;min-width:0}
.nx-pwa-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:3px;letter-spacing:-.2px}
.nx-pwa-desc{font-size:12px;color:#94a3b8;line-height:1.4}
.nx-pwa-actions{display:flex;gap:8px;flex-shrink:0}
.nx-pwa-install{padding:10px 20px;background:linear-gradient(135deg,#2563EB,#1d4ed8);color:#fff;border:none;border-radius:12px;font-size:13px;font-weight:600;cursor:pointer;font-family:'Inter',sans-serif;transition:.2s;white-space:nowrap;box-shadow:0 4px 16px rgba(37,99,235,.3)}
.nx-pwa-install:hover{transform:translateY(-1px);box-shadow:0 6px 24px rgba(37,99,235,.4)}
.nx-pwa-install:active{transform:scale(.97)}
.nx-pwa-dismiss{width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,.06);border:none;color:#64748b;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s;flex-shrink:0}
.nx-pwa-dismiss:hover{background:rgba(255,255,255,.1);color:#94a3b8}

/* ─── iOS Install Prompt (modal) ─── */
.nx-ios-overlay{position:fixed;inset:0;z-index:9001;background:rgba(0,0,0,.6);backdrop-filter:blur(8px);display:none;align-items:flex-end;justify-content:center}
.nx-ios-overlay.show{display:flex}
.nx-ios-card{width:100%;max-width:400px;margin:0 auto 24px;background:linear-gradient(180deg,#1e293b,#0f172a);border:1px solid rgba(96,165,250,.12);border-radius:24px;padding:28px 24px 32px;text-align:center;animation:iosSlide .35s cubic-bezier(.32,.72,0,1)}
@keyframes iosSlide{from{transform:translateY(40px);opacity:0}to{transform:translateY(0);opacity:1}}
.nx-ios-icon{width:72px;height:72px;border-radius:20px;background:linear-gradient(135deg,#1E3A5F,#2563EB);display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;box-shadow:0 8px 32px rgba(37,99,235,.25)}
.nx-ios-title{font-size:20px;font-weight:700;color:#fff;margin-bottom:6px;letter-spacing:-.3px}
.nx-ios-desc{font-size:14px;color:#94a3b8;line-height:1.6;margin-bottom:24px}
.nx-ios-steps{text-align:left;padding:16px 18px;background:rgba(255,255,255,.04);border-radius:14px;margin-bottom:20px}
.nx-ios-step{display:flex;align-items:center;gap:12px;padding:10px 0;font-size:13px;color:#cbd5e1}
.nx-ios-step:not(:last-child){border-bottom:1px solid rgba(255,255,255,.04)}
.nx-ios-step-num{width:28px;height:28px;border-radius:8px;background:rgba(37,99,235,.12);color:#60A5FA;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0}
.nx-ios-step svg{flex-shrink:0;opacity:.7}
.nx-ios-close{width:100%;padding:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.06);border-radius:14px;color:#94a3b8;font-size:14px;font-weight:500;cursor:pointer;font-family:'Inter',sans-serif;transition:.2s}
.nx-ios-close:hover{background:rgba(255,255,255,.1);color:#fff}

/* ─── Update Available Toast ─── */
.nx-pwa-update{position:fixed;top:20px;left:50%;transform:translateX(-50%) translateY(-120%);z-index:9002;background:linear-gradient(135deg,#0f172a,#1e293b);border:1px solid rgba(96,165,250,.15);border-radius:14px;padding:12px 20px;display:flex;align-items:center;gap:12px;box-shadow:0 8px 32px rgba(0,0,0,.4);transition:transform .4s cubic-bezier(.32,.72,0,1)}
.nx-pwa-update.show{transform:translateX(-50%) translateY(0)}
.nx-pwa-update-text{font-size:13px;color:#e2e8f0}
.nx-pwa-update-btn{padding:6px 16px;background:#2563EB;color:#fff;border:none;border-radius:8px;font-size:12px;font-weight:600;cursor:pointer;font-family:'Inter',sans-serif;white-space:nowrap}

/* ─── Light theme ─── */
html[data-theme="light"] .nx-pwa-card{background:linear-gradient(135deg,#ffffff,#f8fafc);border-color:rgba(37,99,235,.12);box-shadow:0 -8px 40px rgba(0,0,0,.1)}
html[data-theme="light"] .nx-pwa-title{color:#0f172a}
html[data-theme="light"] .nx-pwa-desc{color:#64748b}
html[data-theme="light"] .nx-pwa-dismiss{background:rgba(0,0,0,.04);color:#94a3b8}
html[data-theme="light"] .nx-ios-card{background:linear-gradient(180deg,#ffffff,#f8fafc);border-color:rgba(0,0,0,.08)}
html[data-theme="light"] .nx-ios-title{color:#0f172a}
html[data-theme="light"] .nx-ios-desc{color:#64748b}
html[data-theme="light"] .nx-ios-steps{background:rgba(0,0,0,.03)}
html[data-theme="light"] .nx-ios-step{color:#374151}
html[data-theme="light"] .nx-ios-close{background:rgba(0,0,0,.04);border-color:rgba(0,0,0,.06);color:#64748b}
html[data-theme="light"] .nx-pwa-update{background:#fff;border-color:rgba(0,0,0,.1);box-shadow:0 8px 32px rgba(0,0,0,.1)}
html[data-theme="light"] .nx-pwa-update-text{color:#1e293b}

/* ─── Mobile ─── */
@media(max-width:480px){
  .nx-pwa-card{padding:16px;gap:12px}
  .nx-pwa-icon{width:48px;height:48px;border-radius:14px}
  .nx-pwa-install{padding:8px 16px;font-size:12px}
  .nx-ios-card{margin:0 12px 16px;padding:24px 20px}
}