/* --- PALET WARNA NEUMORPHISM MONOKROM --- */
:root {
  --bg-color: #e0e5ec;        /* Abu-abu spesifik untuk neumorphism agar shadow terlihat */
  --text-main: #2d3748;       /* Abu-abu sangat gelap untuk teks utama */
  --text-muted: #718096;      /* Abu-abu medium */
  --accent-black: #1a202c;    /* Hitam pekat untuk aksen tercapai */
  
  /* Variabel Shadow Neumorphism */
  --light-shadow: #ffffff;
  --dark-shadow: #a3b1c6;
  
  /* Shadow kombinasi untuk menonjol keluar (Extrude) */
  --neumorphic-out: 
    9px 9px 16px var(--dark-shadow), 
    -9px -9px 16px var(--light-shadow);
    
  /* Shadow kombinasi untuk menonjol ke dalam (Inset) */
  --neumorphic-in: 
    inset 6px 6px 10px 0 var(--dark-shadow),
    inset -6px -6px 10px 0 var(--light-shadow);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: center; /* Memastikan semuanya di tengah vertikal */
  align-items: center;     /* Memastikan semuanya di tengah horizontal */
  min-height: 100vh;
  margin: 0;
  padding: 1.5rem;
  background-color: var(--bg-color);
  color: var(--text-main);
}

.hidden {
  display: none !important;
}

#app {
  max-width: 650px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* --- AUTH STYLE (FORM LOGIN NEUMORPHIC) --- */
.auth-card {
  width: 100%;
  max-width: 400px;
  padding: 2.5rem 2rem;
  border-radius: 20px;
  background-color: var(--bg-color);
  box-shadow: var(--neumorphic-out); /* Menerapkan efek menonjol */
  text-align: center;
}

.auth-card h2 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.auth-card p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

/* Input Form Neumorphic (Inset) */
.auth-card input {
  width: 100%;
  padding: 1rem;
  margin-bottom: 1.2rem;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  background-color: var(--bg-color);
  box-shadow: var(--neumorphic-in); /* Menerapkan efek ke dalam */
  color: var(--text-main);
}

.auth-card input:focus {
  outline: none;
}

.auth-card input::placeholder {
  color: #a0aec0;
}

.auth-buttons {
  display: flex;
  gap: 15px;
  margin-top: 1rem;
}

/* Tombol Neumorphic */
.auth-buttons button {
  flex: 1;
  padding: 0.85rem;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  background-color: var(--bg-color);
  color: var(--text-main);
  box-shadow: var(--neumorphic-out);
  transition: all 0.2s ease;
}

.auth-buttons button:active {
  box-shadow: var(--neumorphic-in); /* Efek saat ditekan */
}

/* --- DASHBOARD & HEADER --- */
#board-container {
  width: 100%;
}

.board-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  width: 100%;
}

.board-title {
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  text-transform: uppercase;
  color: var(--text-main);
}

.btn-secondary {
  padding: 0.6rem 1.2rem;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  background-color: var(--bg-color);
  color: var(--text-muted);
  box-shadow: var(--neumorphic-out);
  transition: all 0.2s;
}

.btn-secondary:active {
  box-shadow: var(--neumorphic-in);
}

/* --- BINGO GRID 5x5 NEUMORPHIC --- */
.bingo-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px; /* Jarak diperbesar sedikit agar shadow tidak tabrakan */
  width: 100%;
}

.bingo-box {
  background-color: var(--bg-color);
  border-radius: 12px;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.5rem;
  font-size: clamp(0.7rem, 1.6vw, 0.9rem);
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  box-shadow: var(--neumorphic-out); /* Default menonjol keluar */
  transition: all 0.3s ease;
  overflow: hidden;
  word-wrap: break-word;
}

/* Efek saat diklik/hover */
.bingo-box:active {
  box-shadow: var(--neumorphic-in);
}

/* State Tercapai (Achieved) */
.bingo-box.achieved {
  box-shadow: var(--neumorphic-in); /* Menonjol ke dalam jika sudah tercapai */
  color: var(--bg-color);
  background-color: var(--accent-black); /* Berubah gelap */
}

/* --- FLOATING ACTION BUTTON (FAB) --- */
.fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  background-color: var(--bg-color);
  color: var(--text-main);
  border: none;
  border-radius: 50%;
  font-size: 2rem;
  font-weight: 300;
  cursor: pointer;
  box-shadow: var(--neumorphic-out);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 90;
}

.fab:active {
  box-shadow: var(--neumorphic-in);
}

/* --- MODERN POPUP MODAL NEUMORPHIC --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(224, 229, 236, 0.7); /* Latar transparan yang senada */
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 1000;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background-color: var(--bg-color);
  width: 90%;
  max-width: 400px;
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: var(--neumorphic-out);
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-content h3 {
  font-size: 1.1rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  text-align: center;
}

.modal-content input[type="text"],
.modal-content textarea {
  width: 100%;
  padding: 1rem;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  background-color: var(--bg-color);
  box-shadow: var(--neumorphic-in);
  color: var(--text-main);
  margin-bottom: 1.5rem;
}

.modal-content textarea {
  height: 120px;
  resize: none;
}

.modal-content input[type="text"]:focus,
.modal-content textarea:focus {
  outline: none;
}

/* Custom Checkbox Neumorphic */
.modal-status-zone {
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
}

.checkbox-container {
  display: flex;
  align-items: center;
  position: relative;
  padding-left: 35px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  user-select: none;
  color: var(--text-main);
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: absolute;
  top: -2px;
  left: 0;
  height: 24px;
  width: 24px;
  background-color: var(--bg-color);
  border-radius: 6px;
  box-shadow: var(--neumorphic-out);
  transition: all 0.2s ease;
}

.checkbox-container input:checked ~ .checkmark {
  box-shadow: var(--neumorphic-in);
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
  display: block;
}

.checkbox-container .checkmark:after {
  left: 9px;
  top: 4px;
  width: 5px;
  height: 10px;
  border: solid var(--text-main);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.modal-actions {
  display: flex;
  gap: 15px;
}

.btn-primary {
  flex: 1;
  padding: 0.85rem;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  background-color: var(--text-main);
  color: var(--bg-color);
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.modal-actions .btn-secondary {
  flex: 1;
}

/* --- RESPONSIVENESS --- */
@media (max-width: 480px) {
  body {
    padding: 1rem;
  }
  .bingo-grid {
    gap: 10px;
  }
  .bingo-box {
    border-radius: 8px;
    padding: 0.35rem;
  }
  .fab {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 50px;
    height: 50px;
  }
}