:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --primary: #38bdf8;
    --accent: #f472b6;
    --atk-color: #ef4444;
    --def-color: #3b82f6;
    --special-color: #fbbf24;
    --text-color: #f8fafc;
    --glass-border: rgba(255, 255, 255, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Outfit', 'Noto Sans JP', sans-serif;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

#app {
    width: 100%;
    max-width: 600px;
    height: 100vh;
    position: relative;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.screen {
    display: none;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.screen.active {
    display: flex;
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -1px;
    line-height: 1;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff, var(--primary));
    -webkit-background-clip: text;
    background-clip: text; /* 追加 */
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--primary);
    font-size: 0.9rem;
    letter-spacing: 4px;
    margin-bottom: 30px;
}

.input-group {
    margin-bottom: 24px;
    text-align: left;
}

.input-group label {
    display: block;
    font-size: 0.8rem;
    margin-bottom: 8px;
    opacity: 0.6;
}

#username {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: 12px 16px;
    border-radius: 12px;
    color: white;
    font-size: 1.1rem;
    outline: none;
}

.avatar-selector {
    margin-bottom: 30px;
    text-align: left;
}

.avatar-selector label {
    display: block;
    font-size: 0.8rem;
    margin-bottom: 12px;
    opacity: 0.6;
}

.avatar-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.avatar-item {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.2s, border-color 0.2s;
    background: rgba(255, 255, 255, 0.05);
}

.avatar-item.selected {
    border-color: var(--primary);
    transform: scale(1.1);
}

.avatar-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.premium-btn {
    width: 100%;
    padding: 16px;
    border-radius: 16px;
    background: var(--primary);
    color: var(--bg-color);
    font-weight: 700;
    font-size: 1.1rem;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
    box-shadow: 0 8px 24px rgba(56, 189, 248, 0.3);
}

.premium-btn:active {
    transform: scale(0.98);
}

.hidden {
    display: none !important;
}

.queue-count {
    margin: 8px 0;
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 700;
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px;
    border-radius: 8px;
}

/* ゲーム画面 */
.game-header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 15px;
    align-items: center;
    margin-bottom: 20px;
}

.player-stats {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hp-bar-container {
    height: 18px; /* 数値を入れやすくするために少し太く */
    background: rgba(0, 0, 0, 0.3);
    border-radius: 9px;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.5);
}

.hp-bar {
    height: 100%;
    background: linear-gradient(90deg, #ef4444, #f87171);
    transition: width 0.5s ease;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
}

#p1HpText, #p2HpText {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.75rem;
    font-weight: 900;
    color: #fff;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
    width: 100%;
    text-align: center;
    z-index: 10;
    pointer-events: none;
}

.player-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.player-info img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary);
}

.player-stats.opponent .player-info {
    flex-direction: row-reverse;
}

.name-id {
    font-size: 0.8rem;
    font-weight: 700;
}

.battle-stats {
    display: flex;
    gap: 10px;
}

.opponent .battle-stats {
    justify-content: flex-end;
}

.stat-item {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 4px;
    display: flex;
    gap: 4px;
}

.stat-item.atk { background: rgba(239, 68, 68, 0.2); color: #f87171; }
.stat-item.def { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }

.round-timer {
    text-align: center;
}

#roundLabel { font-size: 0.7rem; opacity: 0.6; font-weight: 700; }
#phaseTimer { font-size: 1.5rem; font-weight: 700; color: var(--accent); }

/* パズルボード */
.game-body {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.puzzle-board {
    width: 100%;
    aspect-ratio: 1;
    background: rgba(255,255,255,0.03);
    border: 2px solid var(--glass-border);
    border-radius: 12px;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    position: relative;
    padding: 5px;
    gap: 5px;
}

.tile {
    width: 100%;
    height: 100%;
    position: relative;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    /* grid-row の変化もアニメーションさせる */
    transition: transform 0.1s, grid-row 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    user-select: none;
}

.tile-inner {
    width: 90%;
    aspect-ratio: 1; /* 正方形を維持して楕円化を防ぐ */
    border-radius: 50%; /* ◯にする */
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(255,255,255,0.08); /* 少し明るく */
    border: 2px solid var(--glass-border);
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.tile-inner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.6); /* 顔に寄せる */
    object-position: center 20%; /* 顔の位置を調整 */
}

.tile:active {
    transform: scale(0.85); /* 押した時に少し小さく */
}

.tile.selected {
    transform: scale(0.9);
    filter: brightness(1.5);
    z-index: 10;
}

.tile.match-anim {
    animation: matchScale 0.6s forwards;
}

@keyframes matchScale {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); filter: brightness(2); }
    100% { transform: scale(0); opacity: 0; }
}

/* コンボ表示 */
.combo-display {
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2rem;
    font-weight: 900;
    color: var(--accent);
    text-shadow: 0 0 10px rgba(0,0,0,0.5);
    z-index: 100;
    pointer-events: none;
    opacity: 0;
    /* 消える時は1秒かけてゆっくり消えるようにする */
    transition: opacity 1.0s ease-in;
}
.combo-display.active {
    opacity: 1;
    transition: opacity 0.1s; /* 出現するときは一瞬で出す */
    animation: comboPop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
@keyframes comboPop {
    0% { transform: translateX(-50%) scale(0.5); }
    100% { transform: translateX(-50%) scale(1); }
}

/* オーバレイ */
.overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.battle-text {
    font-size: 3rem;
    font-weight: 900;
    color: var(--accent);
    text-shadow: 0 0 20px var(--accent);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* Ranking Modal */
.ranking-card {
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
}

.ranking-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.tab-btn {
    flex: 1;
    padding: 10px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    cursor: pointer;
    border-radius: 10px;
    font-weight: bold;
    transition: all 0.3s;
}

.tab-btn.active {
    background: var(--pink-main);
    box-shadow: 0 0 15px var(--pink-main);
}

.ranking-content {
    flex: 1;
    overflow-y: auto;
    padding-right: 5px;
}

.ranking-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ranking-item {
    display: flex;
    align-items: center;
    gap: 15px;
    background: rgba(255, 255, 255, 0.05);
    padding: 10px 15px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.rank-num {
    width: 30px;
    font-weight: 900;
    font-size: 1.2rem;
    color: var(--pink-main);
}

.ranking-item:nth-child(1) .rank-num { color: #ffd700; font-size: 1.5rem; }
.ranking-item:nth-child(2) .rank-num { color: #c0c0c0; }
.ranking-item:nth-child(3) .rank-num { color: #cd7f32; }

.rank-avatar {
    width: 40px;
    height: 40px;
    object-fit: contain;
    background: rgba(0,0,0,0.2);
    border-radius: 50%;
}

.rank-info {
    flex: 1;
    text-align: left;
}

.rank-name {
    display: block;
    font-weight: bold;
    font-size: 0.9rem;
}

.rank-score {
    font-size: 0.8rem;
    color: #38bdf8;
}

.rank-value {
    font-weight: 900;
    font-size: 1.1rem;
}

/* Scrollbar */
.ranking-content::-webkit-scrollbar { width: 5px; }
.ranking-content::-webkit-scrollbar-track { background: transparent; }
.ranking-content::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.2); border-radius: 10px; }

/* 結果 */
.result-card h2 {
    font-size: 4rem;
    margin-bottom: 20px;
}

.result-stats {
    margin-bottom: 40px;
}

.result-stats p {
    font-size: 1.2rem;
    margin-bottom: 10px;
}