:root {
  --mainColor: #000000;
  --secondaryColor: #1e3a8a;
  --acsentColor: #2563eb;
  --text: #f8fafc;
  --muted: #94a3b8;
  --main2Color: #0f172a;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Ububtu", sans-serif;
}

/* 🔹 Struktur utama */
body {
  background: linear-gradient(145deg, var(--mainColor), var(--main2Color));
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 🔹 Container contact */
.contact-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px 20px;
}

/* 🔹 Kartu contact */
.contact-card {
  width: 100%;
  max-width: 420px;
  padding: 35px 30px;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.65);
  border: 2px solid rgba(148, 163, 184, 0.3);
  box-shadow: 0 0 35px rgba(37, 99, 235, 0.1);
  backdrop-filter: blur(20px);
  text-align: center;
  transition: all 0.3s ease;
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 45px rgba(37, 99, 235, 0.2);
  border-color: rgba(37, 99, 235, 0.4);
}

/* 🔹 Header card */
.header {
  margin-bottom: 25px;
}

.hero {
  width: 70px;
  margin-bottom: 15px;
}

/* 🔹 Text */
h1 {
  color: var(--text);
  font-size: 26px;
  margin-bottom: 8px;
}

p {
  color: var(--muted);
  font-size: 14px;
}

/* 🔹 Form */
.input-group {
  margin-bottom: 18px;
  text-align: left;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

input,
textarea {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: rgba(15, 23, 42, 0.6);
  color: var(--text);
  transition: all 0.3s ease;
  font-size: 14px;
}

input:focus,
textarea:focus {
  border-color: var(--acsentColor);
  outline: none;
  background: rgba(15, 23, 42, 0.8);
}

/* 🔹 Tombol */
button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 10px;
  background: var(--acsentColor);
  color: white;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  transition: all 0.3s ease;
}

button:hover {
  background: var(--secondaryColor);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.3);
}

.wa-icon {
  width: 22px;
  height: 22px;
  filter: grayscale(100%) brightness(1.2);
}

/* 🔹 Animasi masuk */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 🔹 Responsif */
@media (max-width: 768px) {
  .contact-card {
    padding: 25px 20px;
    max-width: 90%;
  }
  h1 {
    font-size: 22px;
  }
  .brand {
    font-size: 18px;
  }
  .nav-links {
    gap: 6px;
  }
}