/* =========================================================
   ASN DIGITAL THEME — Hackathon 2025 Edition
   ========================================================= */

/* ---------- COLOR PALETTE ---------- */
:root {
  --primary-blue: #269dd8; /* Biru utama */
  --accent-red: #de1a5a; /* Merah keunguan */
  --accent-green: #77ce94; /* Hijau lembut */
  --dark-blue: #003c74; /* Biru gelap untuk teks */
  --soft-bg: #f2f8fb; /* Background lembut */
  --white: #ffffff;
}

/* ---------- GLOBAL RESET ---------- */
body {
  background-color: var(--soft-bg);
  color: var(--dark-blue);
  font-family: "Poppins", sans-serif;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

/* ---------- NAVBAR ---------- */
.navbar {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  z-index: 100;
}

.navbar-nav .nav-link {
  font-weight: 600;
  font-size: 16px;
  color: var(--dark-blue) !important;
  padding: 10px 18px;
  transition: 0.3s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--primary-blue) !important;
}

.dropdown-menu {
  border: none;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.dropdown-menu .dropdown-item:hover {
  background-color: var(--soft-bg);
  color: var(--primary-blue) !important;
}

/* ---------- REGISTER / LOGIN BUTTON ---------- */
.register-login .btn {
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-red));
  border: none;
  font-weight: 700;
  padding: 10px 26px;
  border-radius: 50px;
  color: var(--white);
  transition: 0.3s ease;
}

.register-login .btn:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

/* ---------- BANNER SECTION ---------- */
.banner {
  position: relative;
  overflow: hidden;
  padding: 120px 0 100px;
  color: var(--white);
  background: linear-gradient(135deg, #3b454b 0%, var(--primary-blue) 25%, var(--accent-green) 60%, var(--accent-red) 100%);
}

/* Pola ringan di atas gradasi */
.banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../images/Art/color-pattern-bg.png") repeat;
  opacity: 0.05;
  z-index: 1;
}

/* Override overlay lama */
.banner .overlay {
  background: linear-gradient(120deg, rgba(38, 157, 216, 0.8) 0%, rgba(222, 26, 90, 0.6) 100%);
  opacity: 0.75;
  position: absolute;
  inset: 0;
  z-index: 0;
}

/* Konten banner di atas semua layer */
.banner .container {
  position: relative;
  z-index: 2;
}

/* Judul dan teks */
.banner h1 {
  font-weight: 800;
  font-size: 2.8rem;
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
  margin-bottom: 1rem;
}

.banner p {
  font-size: 1.1rem;
  max-width: 600px;
  margin-bottom: 1.5rem;
  color: var(--white);
}

/* Tombol CTA */
.banner .btn-primary {
  background-color: var(--white);
  color: var(--primary-blue);
  border: none;
  border-radius: 50px;
  font-weight: 700;
  padding: 10px 24px;
  transition: 0.3s ease;
}

.banner .btn-primary:hover {
  background-color: var(--dark-blue);
  color: var(--white);
}

/* ---------- SECTIONS ---------- */
section {
  background-color: var(--soft-bg);
  padding: 60px 0;
}

section h2 {
  font-weight: 700;
  color: var(--dark-blue);
  margin-bottom: 1.5rem;
}

/* ---------- FOOTER ---------- */
footer {
  background-color: var(--dark-blue);
  color: var(--white);
  padding: 2.5rem 0;
  text-align: center;
}

footer a {
  color: var(--primary-blue);
  text-decoration: none;
}

footer a:hover {
  color: var(--accent-red);
}

/* ---------- UTILITIES ---------- */
.bg-theme1 {
  background-color: var(--primary-blue) !important;
}

.text-theme1 {
  color: var(--primary-blue) !important;
}

.text-accent {
  color: var(--accent-red) !important;
}

.btn-theme {
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-red));
  border-radius: 50px;
  color: #fff;
  font-weight: 700;
  border: none;
  transition: 0.3s ease;
}

.btn-theme:hover {
  opacity: 0.9;
  transform: scale(1.03);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .banner {
    text-align: center;
    padding: 100px 0;
  }

  .banner h1 {
    font-size: 2rem;
  }

  .banner p {
    font-size: 1rem;
    margin: 0 auto 1.5rem;
  }

  .navbar-nav .nav-link {
    padding: 8px 14px;
  }
}

/* Tombol dengan border & isi gradasi berputar */
.btn-gradient-rotate {
  position: relative;
  display: inline-block;
  padding: 12px 36px;
  font-weight: 700;
  font-size: 16px;
  color: #fff;
  border: none;
  border-radius: 9999px;
  background: conic-gradient(from 0deg, red, orange, yellow, green, blue, indigo, violet, red);
  background-size: 200% 200%;
  animation: spinGradient 6s ease-in-out infinite; /* isi juga berputar halus */
  text-decoration: none;
  overflow: hidden;
  z-index: 1;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Border gradasi berputar */
.btn-gradient-rotate::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 3px; /* ketebalan border */
  background: conic-gradient(from 0deg, #269dd8, #de1a5a, #77ce94, #269dd8);
  animation: rotateBorder 4s linear infinite;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  z-index: 0;
}

/* Layer isi tombol agar tidak tertutup masking */
.btn-gradient-rotate::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: inherit;
  background: linear-gradient(90deg, #269dd8, #de1a5a);
  background-size: 200% 200%;
  animation: spinGradient 8s ease-in-out infinite;
  z-index: 0;
}

/* Teks di atas semua */
.btn-gradient-rotate span {
  position: relative;
  z-index: 2;
}

/* Hover efek tambahan */
.btn-gradient-rotate:hover {
  transform: scale(1.06);
  box-shadow: 0 0 20px rgba(38, 157, 216, 0.5), 0 0 40px rgba(222, 26, 90, 0.3);
}

/* Animasi isi tombol */
@keyframes spinGradient {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Animasi border */
@keyframes rotateBorder {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}