.phone-frame {
  width: min(390px, 100%);
  height: min(820px, calc(100vh - 36px));
  min-height: 680px;
  background-color: var(--bg-color);
  border-radius: 38px;
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  border: 8px solid #142033;
}

.phone-frame.large-text {
  font-size: 1.08rem;
}

.phone-frame.high-contrast {
  --primary: #0f172a;
  --secondary: #14532d;
  --bg-color: #ffffff;
  --surface-soft: #f1f5f9;
  --text-main: #020617;
  --text-light: #334155;
  --border: #64748b;
}

.phone-frame.calm-ui .ble-broadcast {
  animation: none;
}

.demo-locked header,
.demo-locked .content,
.demo-locked nav,
.demo-locked .toast {
  display: none;
}

.notch {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 145px;
  height: 24px;
  background-color: #142033;
  border-bottom-left-radius: 15px;
  border-bottom-right-radius: 15px;
  z-index: 10;
}

header {
  background: linear-gradient(135deg, #1d4ed8, #0f766e);
  color: white;
  padding: 40px 20px 18px;
  border-bottom-left-radius: 22px;
  border-bottom-right-radius: 22px;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.logo {
  font-size: 1.2rem;
  font-weight: 800;
}

.user-profile {
  border: none;
  color: white;
  background: rgba(255, 255, 255, 0.18);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.user-profile:focus-visible,
.nav-item:focus-visible,
.module-btn:focus-visible,
.mode-chip:focus-visible,
.primary-btn:focus-visible,
.secondary-btn:focus-visible,
.danger-btn:focus-visible,
.switch:focus-visible {
  outline: 3px solid rgba(245, 158, 11, 0.85);
  outline-offset: 2px;
}

.status-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 6px 9px;
  background: rgba(255, 255, 255, 0.16);
  font-size: 0.72rem;
  font-weight: 700;
}

.content {
  flex: 1;
  overflow-y: auto;
  padding: 18px 18px 86px;
  scroll-behavior: smooth;
}

.screen {
  display: none;
}

@keyframes screenFadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}

.screen.active {
  display: block;
  animation: screenFadeIn 0.22s ease;
}

nav {
  position: absolute;
  bottom: 0;
  width: 100%;
  background: var(--surface);
  display: flex;
  justify-content: space-around;
  padding: 12px 4px 22px;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  box-shadow: 0 -4px 14px rgba(15, 23, 42, 0.08);
}

.nav-item {
  border: none;
  background: transparent;
  text-align: center;
  color: var(--text-light);
  min-width: 58px;
  padding: 4px 0 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.nav-item.active {
  color: var(--primary);
}

.nav-item i {
  font-size: 1.05rem;
  width: 40px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  transition: background 0.18s ease;
}

.nav-item.active i {
  background: rgba(37, 99, 235, 0.12);
}

.nav-item span {
  font-size: 0.64rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.01em;
}

.toast {
  position: absolute;
  left: 18px;
  right: 18px;
  top: 30px;
  background: rgba(15, 23, 42, 0.52);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: white;
  border-radius: 14px;
  padding: 11px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
  transition:
    opacity 0.22s ease,
    transform 0.22s ease;
  z-index: 30;
}

.toast.visible {
  opacity: 1;
  transform: translateY(0);
}