/* RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

html, body {
    width: 100%;
}

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #eaf4ff, #ffffff);
    color: #333;
    font-synthesis: none; /* 🔒 font stabil */
}

/* ================= NAVBAR ================= */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;

    width: 100%;
    height: 70px;
    padding: 0 40px;

    display: flex;
    justify-content: space-between;
    align-items: center;

    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(12px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.nav-logo {
    font-size: 22px;
    font-weight: 600;
    color: dodgerblue;
    letter-spacing: 1px;
}

/* MENU */
.nav-menu {
    display: flex;
    gap: 30px;
    list-style: none;
}

/* LINK (LOCKED) */
.nav-link,
.nav-link:hover,
.nav-link.active {
    position: relative;
    text-decoration: none;

    font-size: 15px;
    font-weight: 500;
    line-height: 1;
    letter-spacing: 0;

    color: #333;
    padding: 6px 0;
    transition: color 0.3s ease;
}

/* UNDERLINE */
.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 0%;
    height: 2px;
    background: dodgerblue;
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: dodgerblue;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* ================= HERO ================= */
.content1 {
    height: calc(100vh - 70px - 80px);
    display: flex;
    justify-content: center;
    align-items: center;
}

.a-content {
    background: white;
    width: 380px;
    padding: 40px;
    border-radius: 28px;
    text-align: center;
    color: dodgerblue;
    text-decoration: none;

    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.a-content:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0,0,0,0.25);
}

.img-content1 {
    width: 200px;
    margin-bottom: 20px;
}

.a-content h2 {
    font-size: 22px;
    margin-bottom: 10px;
}

.a-content p {
    font-size: 16px;
    color: #555;
}

/* ================= FOOTER ================= */
.contain-footer {
    height: 80px;
    background: dodgerblue;
    color: white;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.h1-footer {
    font-size: 22px;
}

.contain-footer p {
    font-size: 13px;
    opacity: 0.85;
}