/* --- Variabel Warna & Gaya Global --- */
:root {
  --primary-color: #007bff;
  --bg-color: #f4f7f9;
  --card-bg-color: #ffffff;
  --text-color: #333;
  --subtle-text-color: #777;
  --border-color: #e0e0e0;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --font-family: "Poppins", sans-serif;
}

body.dark-mode {
  --bg-color: #121212;
  --card-bg-color: #1e1e1e;
  --text-color: #e0e0e0;
  --subtle-text-color: #a0a0a0;
  --border-color: #333;
  --shadow-color: rgba(0, 0, 0, 0.4);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

/* --- Layout Utama --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

header .title-section h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

header .title-section p {
  color: var(--subtle-text-color);
  margin-top: -5px;
}

/* --- Kontrol Pencarian & Dark Mode --- */
.search-container {
  margin-bottom: 2rem;
}

#searchInput {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background-color: var(--card-bg-color);
  color: var(--text-color);
  transition: all 0.3s;
}

#searchInput:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2);
}

/* Dark Mode Toggle Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: 0.4s;
  border-radius: 34px;
}
.slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: 0.4s;
  border-radius: 50%;
}
input:checked + .slider {
  background-color: var(--primary-color);
}
input:checked + .slider:before {
  transform: translateX(26px);
}

/* --- Grid Kartu Siswa --- */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  min-height: 500px; /* Memberi ruang agar layout tidak "loncat" saat berganti halaman */
}

.student-card {
  background-color: var(--card-bg-color);
  border-radius: 15px;
  padding: 1.5rem;
  text-align: center;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 15px var(--shadow-color);
  transition: transform 0.3s, box-shadow 0.3s;
}

.student-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 25px var(--shadow-color);
}

.student-card .profile-pic {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1rem;
  border: 4px solid var(--primary-color);
}

.student-card .student-name {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.student-card .student-absen {
  color: var(--subtle-text-color);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.student-card .student-hobby {
  display: inline-block;
  background-color: rgba(0, 123, 255, 0.1);
  color: var(--primary-color);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
}

/* --- Pagination --- */
.pagination-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 2.5rem;
  gap: 1rem;
}

.pagination-button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s, opacity 0.3s;
}

.pagination-button:hover:not(:disabled) {
  background-color: #0056b3;
}

.controls {
  gap: 1rem;
}

.back-button {
  background-color: var(--primary-color);
  color: white;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background-color 0.2s, transform 0.2s;
}

.back-button:hover {
  background-color: #0056b3;
  transform: translateY(-2px);
}

.pagination-button:disabled {
  background-color: #ccc;
  cursor: not-allowed;
  opacity: 0.6;
}

#page-info {
  font-weight: 600;
  color: var(--subtle-text-color);
}

/* --- Footer --- */
footer {
  text-align: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  color: var(--subtle-text-color);
}