/* ==========================================
   リセット & ベーススタイル
========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg-dark: #1A1A2E;
    --color-bg-medium: #16213E;
    --color-accent-gold: #D4AF37;
    --color-accent-light: #FFD700;
    --color-text-light: #F5F5F5;
    --color-text-gray: #CCCCCC;
    --color-danger: #E74C3C;
    --color-success: #2ECC71;
    --color-card-bg: #0F3460;
    --color-card-revealed: #533483;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-medium) 100%);
    color: var(--color-text-light);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ==========================================
   キャラクター表示エリア
========================================== */
#character-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    text-align: center;
    pointer-events: none;
}

.character-image {
    width: 120px;
    height: 120px;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    transition: transform 0.3s ease;
}

.character-image.bounce {
    animation: bounce 0.6s ease;
}

.character-image.shake {
    animation: shake 0.5s ease;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    25% { transform: translateY(-20px); }
    50% { transform: translateY(-10px); }
    75% { transform: translateY(-15px); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-10px); }
    20%, 40%, 60%, 80% { transform: translateX(10px); }
}

.character-message {
    margin-top: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--color-accent-gold);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: bold;
    max-width: 180px;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.character-message.show {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   爆発エフェクト用キャンバス
========================================== */
#explosion-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 999;
    display: none;
}

#explosion-canvas.active {
    display: block;
}

/* ==========================================
   メインコンテナ
========================================== */
#app-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.screen {
    display: none;
}

.screen.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   スタート画面
========================================== */
.logo-container {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    border: 2px solid var(--color-accent-gold);
}

.game-title {
    font-size: 48px;
    font-weight: 900;
    color: var(--color-accent-gold);
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.5);
    margin-bottom: 10px;
    line-height: 1.2;
}

.game-subtitle {
    font-size: 16px;
    color: var(--color-text-gray);
    margin-top: 10px;
}

.section-title {
    font-size: 24px;
    font-weight: bold;
    color: var(--color-accent-light);
    text-align: center;
    margin-bottom: 20px;
}

.quiz-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

.quiz-item {
    background: var(--color-card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    font-size: 18px;
    font-weight: bold;
}

.quiz-item:hover {
    border-color: var(--color-accent-gold);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(212, 175, 55, 0.3);
}

.quiz-item:active {
    transform: translateY(0);
}

/* ==========================================
   ゲーム画面
========================================== */
.game-header {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    border: 2px solid var(--color-accent-gold);
}

.current-theme {
    font-size: 22px;
    font-weight: bold;
    color: var(--color-accent-light);
    text-align: center;
    margin-bottom: 15px;
}

.stats {
    display: flex;
    justify-content: space-around;
    gap: 10px;
}

.stat-item {
    font-size: 16px;
    color: var(--color-text-gray);
    font-weight: bold;
}

/* ==========================================
   ランキングボード
========================================== */
.ranking-board {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.ranking-card {
    background: var(--color-card-bg);
    border: 2px solid var(--color-accent-gold);
    border-radius: 12px;
    padding: 15px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.ranking-card.revealed {
    background: var(--color-card-revealed);
    border-color: var(--color-success);
    animation: revealPulse 0.5s ease;
}

@keyframes revealPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.rank-number {
    font-size: 20px;
    font-weight: bold;
    color: var(--color-accent-gold);
    margin-bottom: 8px;
}

.rank-answer {
    font-size: 18px;
    font-weight: bold;
    color: var(--color-text-light);
    min-height: 28px;
}

.rank-answer.hidden {
    color: var(--color-text-gray);
    font-size: 32px;
}

/* ==========================================
   入力エリア
========================================== */
.input-area {
    margin-bottom: 15px;
    display: flex;
    gap: 10px;
}

.answer-input {
    flex: 1;
    padding: 15px;
    font-size: 16px;
    border: 2px solid var(--color-accent-gold);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-light);
    font-family: 'Noto Sans JP', sans-serif;
}

.answer-input:focus {
    outline: none;
    border-color: var(--color-accent-light);
    background: rgba(255, 255, 255, 0.15);
}

.answer-input::placeholder {
    color: var(--color-text-gray);
}

/* ==========================================
   ボタン
========================================== */
.btn {
    padding: 15px 25px;
    font-size: 16px;
    font-weight: bold;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Noto Sans JP', sans-serif;
    touch-action: manipulation;
}

.btn-primary {
    background: var(--color-accent-gold);
    color: var(--color-bg-dark);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(212, 175, 55, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-card-bg);
    color: var(--color-text-light);
    border: 2px solid var(--color-accent-gold);
}

.btn-secondary:hover {
    background: var(--color-accent-gold);
    color: var(--color-bg-dark);
}

.btn-danger {
    background: var(--color-danger);
    color: var(--color-text-light);
}

.btn-danger:hover {
    background: #C0392B;
}

.action-buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.action-buttons .btn {
    flex: 1;
}

/* ==========================================
   結果画面
========================================== */
.result-container {
    text-align: center;
    padding: 20px;
}

.result-title {
    font-size: 36px;
    font-weight: bold;
    color: var(--color-accent-gold);
    margin-bottom: 20px;
}

.result-stats {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: 18px;
}

.result-stats p {
    margin: 10px 0;
}

.result-ranking {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    text-align: left;
}

.result-ranking h3 {
    color: var(--color-accent-light);
    margin-bottom: 15px;
    text-align: center;
}

.result-ranking-item {
    padding: 10px;
    margin: 5px 0;
    background: var(--color-card-bg);
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.result-ranking-item.found {
    background: var(--color-card-revealed);
    border-left: 4px solid var(--color-success);
}

/* ==========================================
   レスポンシブ対応
========================================== */
@media (max-width: 480px) {
    .game-title {
        font-size: 36px;
    }

    .character-image {
        width: 80px;
        height: 80px;
    }

    #character-container {
        top: 10px;
        right: 10px;
    }

    .ranking-board {
        grid-template-columns: 1fr;
    }

    .input-area {
        flex-direction: column;
    }
}