:root {
  --primary-color: #00acc1;
  --secondary-color: #00838f;
  --background-color: #f0f4f8;
  --card-background: #ffffff;
  --text-color: #333;
  --input-bg: #f1f3f5;
  --nav-bg: #ffffff;
  --shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  /* Warna tombol Bootstrap custom */
  --bs-btn-color: #fff;
  --bs-btn-bg: #0d6efd;
  --bs-btn-border-color: #0d6efd;
  --bs-btn-hover-color: #fff;
  --bs-btn-hover-bg: #0b5ed7;
  --bs-btn-hover-border-color: #0a58ca;
  --bs-btn-active-color: #fff;
  --bs-btn-active-bg: #0a58ca;
  --bs-btn-active-border-color: #0a53be;
  --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
  --bs-btn-disabled-color: #fff;
  --bs-btn-disabled-bg: #0d6efd;
  --bs-btn-disabled-border-color: #0d6efd;
}
/* Mode Malam */
.dark-mode {
  --background-color: #121212;
  --card-background: #1e1e1e;
  --text-color: #e0e0e0;
  --input-bg: #222;
  --nav-bg: #1f1f1f;
  --shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}
body {
  font-family: 'Poppins', sans-serif;
  padding-top: 80px;
  background-color: var(--background-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main {
  flex: 1;
}
.navbar {
  background: var(--nav-bg);
  box-shadow: var(--shadow);
  transition: background 0.3s, box-shadow 0.3s;
}
.navbar-brand,
.nav-link {
  color: var(--text-color) !important;
  transition: color 0.3s; /* Animasi halus untuk perubahan warna */
  text-decoration: none; /* Pastikan tidak ada garis bawah default */
}

.nav-link:hover {
  color: var(--primary-color) !important; /* Ubah warna teks saat dihover */
}

/* Efek hover tambahan untuk mode malam */
.dark-mode .nav-link:hover {
  color: var(--secondary-color) !important; /* Warna teks hover disesuaikan dengan mode malam */
}

.navbar-toggler-icon {
  filter: none;
  transition: filter 0.3s;
}
.dark-mode .navbar-toggler-icon {
  filter: invert(1);
}
.card {
  background: var(--card-background);
  color: var(--text-color);
  border: none;
  border-radius: 15px;
  box-shadow: var(--shadow);
  margin-bottom: 25px;
  transition: background 0.3s, color 0.3s, box-shadow 0.3s;
  text-align: center;
}
.input-group {
  margin-bottom: 15px;
}
.input-group-text {
  background: #e9ecef;
  border: none;
  cursor: help;
  border-radius: 10px 0 0 10px;
  transition: background 0.3s, color 0.3s;
}
.form-control {
  border-radius: 10px;
  background: var(--input-bg);
  color: var(--text-color);
  border: 1px solid #ccc;
  transition: background 0.3s, color 0.3s;
}
/* Placeholder styling */
.form-control::placeholder {
  color: #aaa; /* Warna abu-abu muda untuk mode siang */
  opacity: 1; /* Pastikan placeholder tidak transparan */
}
.dark-mode .form-control::placeholder {
  color: #e0e0e0; /* Warna abu-abu terang untuk mode malam */
  opacity: 1; /* Pastikan placeholder tidak transparan */
}
/* Override form-control untuk layout vertikal */
.input-field {
  border-radius: 10px !important;
}
.btn {
  border-radius: 10px;
  padding: 12px 30px;
  transition: transform 0.2s;
}
.btn:hover {
  transform: scale(1.01);
}
.result-box {
  background: var(--card-background);
  border-radius: 10px;
  padding: 20px;
  min-height: 100px;
  transition: background 0.3s, color 0.3s;
  text-align: center;
}
.info-tooltip {
  font-size: 0.8em;
  color: var(--text-color);
  margin-top: 5px;
  opacity: 0.8;
  transition: color 0.3s;
}
.tooltip-inner {
  background-color: var(--primary-color);
  color: #fff;
  border-radius: 8px;
  padding: 8px 12px;
}
footer {
  background-color: var(--nav-bg);
  padding: 20px 0;
  border-top: 1px solid #ccc;
  transition: background 0.3s, color 0.3s;
}
/* Tombol Mode Malam */
#darkModeToggle {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transition: background 0.3s, color 0.3s;
}
#darkModeToggle:hover {
  background-color: var(--primary-color);
  color: #fff;
}
/* Judul di luar box pencarian */
.title {
  color: rgba(0, 0, 0, 0.8);
  font-size: 2.5rem;
  font-weight: 400;
  text-align: center;
}
.dark-mode .title {
  color: rgba(255, 255, 255, 0.8);
}
/* Ukuran teks keterangan ditetapkan 1rem */
.lead {
  font-size: 1rem;
}
/* Styling tombol dengan warna biru sesuai variabel Bootstrap */
.cta-button {
  background-color: var(--bs-btn-bg) !important;
  border: 1px solid var(--bs-btn-border-color) !important;
  color: var(--bs-btn-color) !important;
  padding: 15px 20px;
  font-size: 1rem;
  border-radius: 10px;
  transition: background-color 0.3s, border-color 0.3s;
  cursor: pointer;
}
.cta-button:hover {
  background-color: var(--bs-btn-hover-bg) !important;
  border-color: var(--bs-btn-hover-border-color) !important;
}
/* Styling khusus untuk tombol pada form search */
.search-btn {
  margin-left: 10px;
  border-radius: 10px;
}
/* Styling untuk hasil pencarian agar lebih modern (efek mengambang) */
.results .result-item {
  padding: 10px;
  margin-bottom: 10px;
  border-radius: 6px;
  background: var(--card-background);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s, box-shadow 0.2s;
  width: 100%;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.results .result-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}
.results .result-title {
  font-weight: bold;
  margin-bottom: 5px;
}
.results .result-author {
  font-style: italic;
  margin-bottom: 5px;
}
.results .result-link {
  color: var(--primary-color);
  text-decoration: none;
}
.results .result-link.disabled {
  color: #aaa;
}
/* Styling tombol paginasi agar lebih kecil dan rapi */
#pagination button {
  padding: 8px 12px;
  font-size: 1rem;
  margin: 0 5px;
}
@media (max-width: 576px) {
  #pagination button {
    padding: 4px 8px;
    font-size: 0.8rem;
    margin: 0 3px;
  }
  .results .result-item {
    width: 95%;
    max-width: 95%;
  }
}
/* Floating container untuk box pencarian, hasil, dan paginasi */
.floating-content {
  background: var(--card-background);
  border-radius: 15px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
  padding: 30px;
  margin: 30px auto;
  max-width: 800px;
  width: 90%;
}
@media (max-width: 768px) {
  .floating-content {
    padding: 20px;
  }
}
@media (max-width: 576px) {
  .container {
    padding-left: 15px;
    padding-right: 15px;
  }
  .title {
    font-size: 1.5rem;
  }
  .floating-content {
    width: 80%;
    max-width: 80%;
  }
}
/* Custom style untuk spinner dan teks pada #searchInfo */
#searchInfo {
  display: none;
}
#searchInfo .spinner-border {
  width: 2rem;
  height: 2rem;
  border-width: 0.3em;
  border-right-color: transparent;
  border-bottom-color: transparent;
  border-left-color: transparent;
  border-top-color: var(--bs-btn-bg);
}
#searchInfo span {
  font-size: 1rem;
  margin-left: 0.5rem;
}
/* === PENYESUAIAN KHUSUS FORM PENCARIAN === */
/* Hanya mempengaruhi elemen di dalam #searchForm */
#searchForm {
  display: flex !important;
  gap: 5px;
  align-items: center;
}
#searchForm .form-control {
  height: 45px;
  padding: 0 10px;
  line-height: 45px;
  border-radius: 10px;
}
#searchForm .cta-button {
  height: 45px;
  padding: 0 20px;
  line-height: 45px;
  border-radius: 10px;
  margin-left: 5px;
}