/* ===== WiFi trigger button ===== */
.wifi-btn-modern {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  color: #1E2C7B;
  padding: 13px 24px;
  border-radius: 16px;
  font-size: 15px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border: 1.5px solid #dfe4f7;
  cursor: pointer;
  transition: all 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 8px 20px rgba(30, 44, 123, 0.08);
  position: relative;
  overflow: hidden;
}
.wifi-btn-modern::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
  transform: translateX(-140%);
  transition: transform 0.55s ease;
}
.wifi-btn-modern:hover::before {
  transform: translateX(140%);
}
.wifi-btn-modern:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(30, 44, 123, 0.16);
  border-color: #1E2C7B;
}
.wifi-btn-modern:active {
  transform: translateY(0);
  box-shadow: 0 8px 16px rgba(30, 44, 123, 0.12);
}
.wifi-btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #f0f2fa 0%, #e8ecf9 100%);
  color: #1E2C7B;
  transition: all 0.28s ease;
  font-size: 14px;
}
.wifi-btn-modern:hover .wifi-btn-icon {
  background: linear-gradient(135deg, #1E2C7B 0%, #142555 100%);
  color: white;
  transform: scale(1.06);
}
.wifi-btn-modern:focus-visible,
.wifi-close-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(30, 44, 123, 0.2);
}

/* ===== WiFi password modal ===== */
.wifi-overlay {
  position: fixed; inset: 0;
  background: rgba(10, 15, 30, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 24px; z-index: 50;
  opacity: 0; pointer-events: none;
  transition: opacity 0.28s ease;
}
.wifi-overlay.show { opacity: 1; pointer-events: all; }
.wifi-box {
  transform: scale(0.94) translateY(16px);
  opacity: 0;
  transition: transform 0.32s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.28s ease;
  background: white;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(30, 44, 123, 0.2);
  width: min(92vw, 900px);
}
.wifi-overlay.show .wifi-box {
  transform: scale(1) translateY(0); opacity: 1;
  animation: wifi-pop-in 340ms cubic-bezier(.2, .9, .3, 1);
}
@keyframes wifi-pop-in {
  0%   { transform: scale(.94) translateY(16px); opacity: 0; }
  60%  { transform: scale(1.03) translateY(-8px); opacity: 1; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}
.wifi-header {
  background: linear-gradient(135deg, #1E2C7B 0%, #142555 55%, #0d1a40 100%);
  color: white;
  padding: 30px 36px;
  display: flex; align-items: center; gap: 18px;
  position: relative;
  overflow: hidden;
}
.wifi-header::after {
  content: "";
  position: absolute; right: -20%; top: 0;
  width: 40%; height: 100%;
  background: radial-gradient(circle, rgba(255,255,255,0.14) 0%, transparent 70%);
  pointer-events: none;
}
.wifi-header-icon {
  width: 64px; height: 64px; border-radius: 18px;
  background: rgba(255,255,255,0.16);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(6px);
  flex-shrink: 0;
  font-size: 30px;
}
.wifi-header-content { position: relative; z-index: 1; }
.wifi-header h2 {
  font-size: 28px; font-weight: 700; margin: 0; line-height: 1.15;
}
.wifi-header p {
  margin: 6px 0 0; font-size: 15px; color: rgba(255,255,255,0.84);
}
.wifi-body {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 28px; padding: 34px 36px 24px;
  align-items: center;
}
.wifi-credentials { display: flex; flex-direction: column; gap: 24px; }
.wifi-credential-item { display: flex; flex-direction: column; gap: 8px; }
.wifi-credential-label {
  font-size: 11px; font-weight: 700; letter-spacing: 0.16em;
  text-transform: uppercase; color: #7c8298;
}
.wifi-credential-value {
  font-size: 34px; font-weight: 800; color: #1E2C7B; line-height: 1.15; word-break: break-all;
}
.wifi-password-box {
  background: linear-gradient(135deg, #f0f2fa 0%, #e8ecf9 100%);
  border: 2px solid #dfe4f7;
  border-radius: 18px;
  padding: 16px 18px;
  box-shadow: inset 0 2px 8px rgba(30, 44, 123, 0.06);
}
.wifi-password-box code {
  display: block; font-size: 28px; font-weight: 700; color: #1E2C7B; letter-spacing: 0.04em;
}
.wifi-qr-shell {
  background: linear-gradient(135deg, #ffffff 0%, #f7f9fc 100%);
  padding: 16px;
  border-radius: 20px;
  border: 1px solid #eceff5;
  box-shadow: 0 14px 32px -18px rgba(30, 44, 123, 0.35);
}
.wifi-qr-caption {
  margin-top: 14px; display: flex; align-items: center; justify-content: center; gap: 8px;
  color: #64748b; font-size: 14px; font-weight: 600; text-align: center;
}
.wifi-close-btn {
  width: 100%; background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
  color: #374151; font-weight: 700; font-size: 16px; padding: 14px 20px;
  border-radius: 16px; display: flex; align-items: center; justify-content: center; gap: 10px;
  border: 1px solid #d1d5db; cursor: pointer; transition: all 0.24s ease; margin-bottom: 8px;
}
.wifi-close-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
}
@media (max-width: 768px) {
  .wifi-body { grid-template-columns: 1fr; padding: 24px 22px 20px; }
  .wifi-header { padding: 24px 22px; gap: 14px; }
  .wifi-header h2 { font-size: 24px; }
  .wifi-credential-value { font-size: 26px; }
  .wifi-password-box code { font-size: 22px; }
}
/* qrcodejs renders an <img>/<canvas>; keep it crisp & centered */
#wifi-qr img, #wifi-qr canvas { margin: 0 auto; image-rendering: pixelated; }