* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #16252B 0%, #1a2f3f 50%, #16252B 100%);
    color: #fff;
    overflow-x: hidden;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: #16252B;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(64, 224, 208, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: #3AB077;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #16252B, #4169E1);
    border-radius: 50%;
    box-shadow: 0 0 40px #16252B;
    padding-right: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.logo-icon img {
    width: 80px;
    border-radius: 30%;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

nav a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

nav a:hover {
    color: #289DD2;
}

footer {
    padding: 3rem 5%;
    text-align: center;
    background: rgba(0, 0, 0, 0.3);
    color: rgba(255, 255, 255, 0.6);
}

footer .footer-links p a {
    color: white;
}

.card-body-custom a {
    color: #3AB077;
}

.eye {
    width: 30px;
    height: 15px;
    border: 3px solid #fff;
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    position: relative;
}

.pupil {
    width: 10px;
    height: 10px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* --- Hamburger --- */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1100;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

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

    nav ul {
        flex-direction: column;
        gap: 0;
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background: #16252B;
        border-left: 1px solid rgba(64, 224, 208, 0.15);
        padding: 6rem 2rem 2rem;
        transition: right 0.35s ease;
        z-index: 1050;
    }

    nav ul.open {
        right: 0;
    }

    nav ul li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    }

    nav ul li a {
        display: block;
        padding: 1rem 0;
        font-size: 1.1rem;
    }
}