:root {
    --app-blue: #3B82F6;
    --app-blue-deep: #1E40AF;
    --app-text: #1E293B;
    --app-muted: #64748B;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100svh;
}

.bottom-nav {
    padding: 0.55rem max(0.45rem, env(safe-area-inset-left)) calc(0.55rem + env(safe-area-inset-bottom)) !important;
    gap: 0.25rem !important;
    border-top-width: 1px !important;
}

.nav-item {
    min-width: 0 !important;
    flex: 1 1 0 !important;
    margin: 0 !important;
    padding: 0.5rem 0.2rem !important;
    border-radius: 14px !important;
    font-size: clamp(0.68rem, 2.7vw, 0.86rem) !important;
    line-height: 1.1 !important;
    text-align: center !important;
}

.nav-icon {
    font-size: clamp(1.15rem, 5vw, 1.45rem) !important;
    margin-bottom: 0.18rem !important;
}

.nav-item span:last-child,
.nav-item > span:not(.nav-icon) {
    display: block;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.content {
    padding-bottom: calc(5.9rem + env(safe-area-inset-bottom)) !important;
}
.emergency-btn {
    position: fixed !important;
    right: 0.95rem !important;
    bottom: calc(5.9rem + env(safe-area-inset-bottom)) !important;
    width: 58px !important;
    height: 58px !important;
    border-radius: 50% !important;
    border: 3px solid rgba(255, 255, 255, 0.65) !important;
    background: linear-gradient(135deg, #EF4444, #DC2626) !important;
    color: #FFFFFF !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 1.35rem !important;
    box-shadow: 0 14px 30px rgba(239, 68, 68, 0.34) !important;
    z-index: 1300 !important;
}

@media (max-width: 640px) {
    .header {
        padding: 0.85rem 0.8rem !important;
    }

    .logo {
        font-size: clamp(1.45rem, 7vw, 1.9rem) !important;
    }

    .tagline,
    .header-subtitle,
    .header > div:not(.logo),
    .header > p {
        font-size: 0.95rem !important;
    }

    .container {
        padding: 1rem 0.75rem !important;
    }

    .hero {
        margin: 0.5rem 0 1rem !important;
        padding: 0 !important;
    }

    .hero h1 {
        font-size: clamp(1.65rem, 8vw, 2.15rem) !important;
        margin-bottom: 0.4rem !important;
    }

    .hero p {
        font-size: 1rem !important;
        margin-bottom: 0 !important;
    }

    .features-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        gap: 0.75rem !important;
        margin: 1rem 0 !important;
    }

    .feature-card {
        min-height: 132px !important;
        padding: 1rem 0.55rem !important;
        border-radius: 16px !important;
        display: flex !important;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .feature-icon {
        font-size: 2rem !important;
        margin-bottom: 0.55rem !important;
    }

    .feature-card h3 {
        font-size: clamp(0.88rem, 3.5vw, 1rem) !important;
        line-height: 1.15 !important;
        margin-bottom: 0.25rem !important;
    }

    .feature-card p {
        font-size: 0.75rem !important;
        line-height: 1.25 !important;
        margin-bottom: 0 !important;
    }

    .footer-section {
        margin-top: 1rem !important;
        padding: 1.25rem 0.9rem 1rem !important;
    }

    .emergency-btn {
        width: 56px !important;
        height: 56px !important;
        bottom: calc(5.8rem + env(safe-area-inset-bottom)) !important;
        right: 0.85rem !important;
        font-size: 1.35rem !important;
    }
}

@media (max-width: 380px) {
    .nav-item {
        font-size: 0.62rem !important;
        padding-inline: 0.1rem !important;
    }

    .nav-icon {
        font-size: 1.08rem !important;
    }

    .feature-card {
        min-height: 122px !important;
        padding-inline: 0.4rem !important;
    }

    .feature-card p {
        display: none;
    }
}