/* ===============================
   RESET & ROOT COLOR SYSTEM
================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --green: #00c853;
  --green-dark: #009624;
  --green-soft: #69f0ae;

  --blue: #2979ff;
  --purple: #7c4dff;
  --orange: #ff9100;

  --text: #1f2937;
  --white: #ffffff;

  --shadow: 0 12px 30px rgba(0,0,0,0.15);
}

/* ===============================
   BODY (FULL COLOR BACKGROUND)
================================ */
body {
  font-family: 'Poppins', sans-serif;
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;

  background:
    linear-gradient(rgba(255,255,255,0.75), rgba(255,255,255,0.75)),
    radial-gradient(circle at 20% 20%, rgba(0,200,83,0.25), transparent 50%),
    radial-gradient(circle at 80% 30%, rgba(41,121,255,0.25), transparent 50%),
    radial-gradient(circle at 50% 90%, rgba(124,77,255,0.2), transparent 50%),
    linear-gradient(135deg, #d4ffe3, #eafff3);
}

/* ===============================
   HEADER (GRADIENT HIDUP)
================================ */
.header {
  background: linear-gradient(135deg, var(--green), var(--blue));
  color: var(--white);
  text-align: center;
  padding: 2.6rem 1rem;

  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.header h1 {
  font-size: 2.4rem;
  font-weight: 700;
}

.header p {
  margin-top: 0.5rem;
  opacity: 0.9;
}

/* ===============================
   BACK BUTTON (FIX ERROR)
================================ */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem; /* FIX */
  margin: 2rem auto 0; /* FIX */
  padding: 0.6rem 1.2rem;

  border-radius: 999px;
  background: var(--white);
  color: var(--green);

  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;

  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
  transition: all 0.3s ease;
}

.back-btn::before {
  content: "🏠";
}

.back-btn:hover {
  background: #dcfce7;
  transform: translateY(-3px);
}

/* ===============================
   SEARCH BOX
================================ */
.search-box {
  max-width: 600px;
  margin: 2.2rem auto 1.5rem;
  padding: 0 1rem;
}

.search-box input {
  width: 100%;
  padding: 1rem 1.3rem;

  border-radius: 999px;
  border: 1.5px solid #bbf7d0;

  font-size: 0.95rem;
  outline: none;

  background: var(--white);
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);

  transition: all 0.3s ease;
}

.search-box input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(0,200,83,0.2);
}

/* ===============================
   FILTER BUTTON
================================ */
.filter-box {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 1.8rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.5rem 1rem;
  border-radius: 999px;

  border: 1.5px solid var(--green);
  background: var(--white);
  color: var(--green-dark);

  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;

  transition: all 0.3s ease;
}

.filter-btn:hover {
  background: #dcfce7;
  transform: translateY(-2px);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--green), var(--blue));
  color: white;
  border: none;
}

/* ===============================
   CONTENT GRID
================================ */
.content {
  max-width: 1100px;
  margin: auto;
  padding: 1rem 1.5rem 3rem;

  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));

  gap: 1.8rem;
  animation: fadeUp 0.6s ease forwards;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(25px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===============================
   CARD (FULL COLOR GLASS)
================================ */
.pepak-card {
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(10px);

  border-radius: 20px;
  padding: 1.6rem;

  box-shadow: var(--shadow);
  border: 1px solid rgba(0,200,83,0.2);

  transition: all 0.35s ease;
}

.pepak-card:hover {
  transform: translateY(-8px) scale(1.02);
}

/* TEXT */
/* TEXT */
.pepak-card h3 {
  font-size: 1.3rem;
  font-weight: 700;

  /* fallback warna */
  color: var(--green-dark);

  /* gradient */
  background: linear-gradient(135deg, var(--green-dark), var(--blue));

  /* support semua browser */
  background-clip: text;
  -webkit-background-clip: text;

  /* transparan hanya jika didukung */
  -webkit-text-fill-color: transparent;
}

.pepak-card .latin {
  font-size: 0.9rem;
  color: #4b5563;
}

.pepak-card .arti {
  font-size: 0.95rem;
  color: var(--green-dark);
  font-weight: 500;
  margin-top: 0.3rem;
}

/* LEVEL TAG */
.pepak-card .level {
  margin-top: 0.9rem;
  display: inline-block;

  padding: 0.3rem 0.8rem;
  font-size: 0.7rem;

  border-radius: 999px;
  background: linear-gradient(135deg, var(--green), var(--blue));
  color: white;

  font-weight: 600;
}

/* ===============================
   FOOTER
================================ */
.footer {
  text-align: center;
  padding: 1.5rem 1rem 2rem;
  font-size: 0.9rem;
}

.footer a {
  color: var(--green);
  font-weight: 600;
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* ===============================
   RESPONSIVE
================================ */
@media (max-width: 640px) {
  .header h1 {
    font-size: 1.9rem;
  }

  .back-btn {
    font-size: 0.8rem;
  }
}