* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
    background-color: #f3f4f6;
    color: #1f2937;
    padding-top: 70px;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background-color: #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    z-index: 1000;
}

.nav-brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: #2563eb;
}

.nav-menu {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: #4b5563;
    font-weight: 500;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: background-color 0.2s;
}

.nav-link:hover {
    background-color: #f3f4f6;
    color: #2563eb;
}

.install-btn {
    background-color: #2563eb;
    color: white !important;
}

.install-btn:hover {
    background-color: #1d4ed8 !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #1f2937;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.container {
    max-width: 600px;
    margin: 3rem auto;
    padding: 0 1rem;
}

.ip-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    text-align: center;
}

.ip-card h2 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: #374151;
}

.ip-display {
    font-size: 2rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 2rem;
    word-break: break-all;
}

.btn {
    background-color: #2563eb;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn:hover {
    background-color: #1d4ed8;
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background-color: white;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 3rem;
        gap: 2rem;
        transition: left 0.3s ease;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
}