/* General Page Styling */
body {
  font-family: "Fredoka", sans-serif;
  background-color: #f5f5f5;
  text-align: center;
  margin: 0;
  margin-top: 50px;
  padding: 20px;
}

/* Page Headers */
h1 {
  color: #333;
  font-size: 32px;
  margin-bottom: 20px;
}

/* General Button Styling */
button {
  background-color: cornflowerblue;
  color: white;
  font-size: 18px;
  font-family: "Fredoka", sans-serif;
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  border: #333 solid 1px;
  cursor: pointer;
  transition: 0.3s;
  box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
}

button:hover {
  background-color: lightblue;
  scale: 1.05;
  box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.4);
}

/* Home Button */
.home-button {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 30px;
  height: 30px;
  z-index: 1000;
}
.home-button img {
  width: 100%;
  height: auto;
  cursor: pointer;
  transition: transform 0.2s ease-in-out;
}
.home-button img:hover {
  transform: scale(1.1);
}

/* ───────────────────────────────────────────────────────── */
/* ───────── GRADE SELECTION PAGE (TEXTBOOK SELECTION) ───── */
/* ───────────────────────────────────────────────────────── */

#grade-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

/* Grade Buttons */
.grade-item {
  background: white;
  padding: 10px;
  border-radius: 10px;
  box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: transform 0.2s ease-in-out;
  text-align: center;
  width: 220px;
}

.grade-item:hover {
  transform: scale(1.05);
}

.grade-img {
  max-width: 120px;
  height: auto;
  display: block;
  margin: auto;
}

.grade-item p {
  font-size: 20px;
  font-weight: bold;
  margin-top: 10px;
}

.subtext {
  font-size: 0.8em;
  color: #e67e22;
  font-weight: normal;
}

/* ───────────────────────────────────────────────────────── */
/* ─────────── DECK SELECTION PAGE (UNIT SELECTION) ──────── */
/* ───────────────────────────────────────────────────────── */

#deck-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
}

/* Deck Buttons */
.deck-item {
  background: white;
  padding: 15px;
  border-radius: 10px;
  box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: transform 0.2s ease-in-out;
  text-align: center;
  width: 240px;
}

.deck-item:hover {
  transform: scale(1.05);
}

.deck-img {
  max-width: 100px;
  height: auto;
  display: block;
  margin: auto;
}

.deck-item p {
  font-size: 18px;
  font-weight: bold;
  margin-top: 10px;
}

/* ───────────────────────────────────────────────────────── */
/* ───────────── DECK VIEW PAGE (CARD PREVIEW) ───────────── */
/* ───────────────────────────────────────────────────────── */

.deck-container {
  max-width: 900px;
  margin: auto;
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
}

/* Deck Header Buttons */
.deck-header {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 20px;
}
.deck-header-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}

/* Grid Layout for Deck Cards */
.deck-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 15px;
  padding: 10px;
}

/* Individual Deck Card */
.deck-card {
  background: white;
  padding: 15px;
  border-radius: 10px;
  box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
  text-align: center;
  transition: transform 0.2s ease-in-out;
}

.deck-card:hover {
  transform: scale(1.05);
}

/* Card Content Layout */
.card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Card Image */
.deck-card-img {
  max-width: 100px;
  max-height: 100px;
  height: auto;
  margin-bottom: 10px;
}

/* Japanese & English Text */
.card-text p {
  margin: 5px 0;
  font-size: 16px;
  font-weight: bold;
}

.kanji {
  font-size: 18px;
}

.furigana {
  font-size: 14px;
  color: gray;
}

.english {
  font-size: 16px;
  color: teal;
}

.deck-card {
  border: 3px solid teal;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.deck-card.selected {
  background-color: rgba(0, 128, 128, 0.2);
}

.deck-card:not(.selected) {
  opacity: 0.5;
}

.deck-card:hover {
  transform: scale(1.02);
}

/* Review Popup Menu Styling */
.popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.3);
  text-align: center;
  z-index: 1000;
}
.popup button {
  display: block;
  margin: 10px auto;
  padding: 10px 15px;
  border: none;
  cursor: pointer;
  border-radius: 5px;
}

/* Game Popup Menu Styling */
.game-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.3);
  text-align: center;
  z-index: 1000;
  width: max-content; /* Adjust width dynamically based on content */
}
.game-popup .button-container {
  display: grid;
  gap: 10px; /* Adjust spacing between buttons */
  justify-content: center;
}
/* Ensure buttons take up full space in the grid */
.game-popup button {
  padding: 10px 15px;
  border: none;
  cursor: pointer;
  border-radius: 5px;
}

.hidden {
  display: none;
}

button:disabled,
button.disabled {
  background-color: #ccc; /* Light gray background */
  color: #666; /* Dimmed text */
  cursor: not-allowed;
  pointer-events: none;
  opacity: 0.7;
  border: none;
}

/* Optional: remove hover styles */
button:disabled:hover,
button.disabled:hover {
  background-color: #ccc;
  transform: none;
}

/*---------- Review Menu Button Styling ------------ */
.normal-review-btn {
  width: 200px;
  background-color: darkgoldenrod;
}
.normal-review-btn:hover {
  scale: 1.05;
  background-color: darkgreen;
}

.random-btn {
  width: 200px;
  background-color: darkgoldenrod;
}
.random-btn:hover {
  scale: 1.05;
  background-color: darkgreen;
}

.japanese-mode-btn {
  width: 200px;
  background-color: darkgoldenrod;
}
.japanese-mode-btn:hover {
  scale: 1.05;
  background-color: darkgreen;
}

/*---------- Games Menu Button Styling ------------ */
.missing-game-btn {
  background-color: blue;
  width: 200px;
}
.missing-game-btn:hover {
  background-color: lightskyblue;
  scale: 1.05;
}

.ng-game-btn {
  background-color: purple;
  width: 200px;
}
.ng-game-btn:hover {
  background-color: lightskyblue;
  scale: 1.05;
}

.sharknado-game-btn {
  width: 200px;
}
.sharknado-game-btn:hover {
  scale: 1.05;
}

.matching-game-btn {
  background-color: crimson;
  width: 200px;
}
.matching-game-btn:hover {
  background-color: lightcoral;
  scale: 1.05;
}

.headsup-game-btn {
  background-color: red;
  width: 200px;
}
.headsup-game-btn:hover {
  background-color: lightsalmon;
  scale: 1.05;
}

.cancel-btn {
  margin-top: 10px;
  width: 150px;
  background-color: darkred;
}
.cancel-btn:hover {
  background-color: red;
  scale: 1.05;
}

.game-icon {
  height: 80px;
  width: 80px;
}

/* ───────────────────────────────────────────────────────── */
/* ───────── RESPONSIVE ADJUSTMENTS FOR SMALL SCREENS ────── */
/* ───────────────────────────────────────────────────────── */

@media (max-width: 600px) {
  button {
    font-size: 16px;
    padding: 10px 16px;
  }

  .grade-item,
  .deck-item {
    width: 180px;
  }

  .grade-img,
  .deck-img {
    max-width: 100px;
  }

  .deck-cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }
}

/* Left and right border images */
.border {
  position: fixed;
  left: 0;
  top: 50px;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}
.border-left,
.border-right {
  position: fixed;
  top: 50px;
  width: 500px;
  height: 100%;
  background-repeat: repeat-y;
  z-index: -1;
}
.border-left {
  left: 0;
}
.border-right {
  right: 0;
}

/*
      Seasonal Effect - Cherry Blossoms Falling
      */
.sakura {
  position: absolute;
  top: -50px;
  width: 50px;
  height: 50px;
  background-image: url("../../assets/sakura_01.png");
  background-size: contain;
  background-repeat: no-repeat;
  z-index: 0;
  pointer-events: none;
}

@keyframes fall {
  0% {
    transform: translateX(0px) translateY(-100px) rotate(0deg);
    opacity: 1;
  }
  50% {
    transform: translateX(30px) translateY(50vh) rotate(180deg);
    opacity: 1;
  }
  100% {
    transform: translateX(-30px) translateY(100vh) rotate(360deg);
    opacity: 0;
  }
}