/* 2048 - スタイルシート */

/* リセットと基本スタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    color: #fff;
    user-select: none;
    overflow-x: hidden;
}

/* 共通 */
.hidden {
    display: none !important;
}

/* ゲームコンテナ */
.game-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ヘッダー */
.game-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.game-header h1 {
    font-size: 1.8rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.game-controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ボタン */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

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

.btn-primary {
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, #6c757d 0%, #545b62 100%);
    color: white;
}

.btn-gold {
    background: linear-gradient(135deg, #ffd700 0%, #ffa500 100%);
    color: #333;
    font-weight: 600;
}

.btn-gold:hover {
    background: linear-gradient(135deg, #ffed4e 0%, #ffb700 100%);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.4);
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ゲーム情報パネル */
.game-info-panel {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
    padding: 15px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    min-width: 80px;
}

.info-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

.info-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffd700;
}

/* ゲームステータス */
.game-status {
    text-align: center;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 600;
}

.game-status.win {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.8) 0%, rgba(30, 126, 52, 0.8) 100%);
}

.game-status.lose {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.8) 0%, rgba(200, 35, 51, 0.8) 100%);
}

/* ボードラッパー */
.board-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

/* ゲームボード */
.board {
    position: relative;
    width: 400px;
    height: 400px;
    background: #bbada0;
    border-radius: 6px;
    padding: 10px;
}

.grid-background {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(4, 1fr);
    gap: 10px;
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
}

.grid-cell {
    background: rgba(238, 228, 218, 0.35);
    border-radius: 3px;
}

.tile-container {
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
}

/* タイル */
.tile {
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    border-radius: 3px;
    transition: left 0.12s ease-out, top 0.12s ease-out;
}

.tile.new {
    animation: appear 0.2s ease-in-out;
}

.tile.merged {
    animation: pop 0.2s ease-in-out;
}

@keyframes appear {
    0% {
        opacity: 0;
        transform: scale(0);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pop {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

/* タイルの色 */
.tile-2 {
    background: #eee4da;
    color: #776e65;
}

.tile-4 {
    background: #ede0c8;
    color: #776e65;
}

.tile-8 {
    background: #f2b179;
    color: #f9f6f2;
}

.tile-16 {
    background: #f59563;
    color: #f9f6f2;
}

.tile-32 {
    background: #f67c5f;
    color: #f9f6f2;
}

.tile-64 {
    background: #f65e3b;
    color: #f9f6f2;
}

.tile-128 {
    background: #edcf72;
    color: #f9f6f2;
}

.tile-256 {
    background: #edcc61;
    color: #f9f6f2;
}

.tile-512 {
    background: #edc850;
    color: #f9f6f2;
}

.tile-1024 {
    background: #edc53f;
    color: #f9f6f2;
}

.tile-2048 {
    background: #edc22e;
    color: #f9f6f2;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.5);
}

.tile-4096 {
    background: #3c3a32;
    color: #f9f6f2;
}

.tile-8192 {
    background: #3c3a32;
    color: #f9f6f2;
}

.tile-16384 {
    background: #3c3a32;
    color: #f9f6f2;
}

.tile-32768 {
    background: #3c3a32;
    color: #f9f6f2;
}

.tile-65536 {
    background: #3c3a32;
    color: #f9f6f2;
}

.tile-131072 {
    background: #3c3a32;
    color: #f9f6f2;
}

.tile-super {
    background: #3c3a32;
    color: #f9f6f2;
}

/* 操作説明 */
.controls-help {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.mobile-controls-help {
    display: none;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* モーダル */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: linear-gradient(135deg, #2a2a4a 0%, #1a1a3a 100%);
    padding: 30px;
    border-radius: 16px;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.modal-content h2 {
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.result-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 25px;
}

.result-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.result-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: #ffd700;
}

.ranking-input {
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

.ranking-input label {
    display: block;
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.8);
}

.ranking-input input {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    margin-bottom: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    text-align: center;
}

.ranking-input input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.modal-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* ランキング */
.ranking-content {
    max-width: 500px;
}

.ranking-list {
    max-height: 400px;
    overflow-y: auto;
    margin-bottom: 20px;
}

.ranking-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    margin-bottom: 8px;
    transition: all 0.2s ease;
}

.ranking-item:hover {
    background: rgba(0, 0, 0, 0.3);
}

.ranking-rank {
    width: 40px;
    font-size: 1.2rem;
    font-weight: 700;
    text-align: center;
}

.ranking-rank.gold {
    color: #ffd700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.8);
}

.ranking-rank.silver {
    color: #c0c0c0;
    text-shadow: 0 0 10px rgba(192, 192, 192, 0.8);
}

.ranking-rank.bronze {
    color: #cd7f32;
    text-shadow: 0 0 10px rgba(205, 127, 50, 0.8);
}

/* 1〜3位の強調表示 */
.ranking-item.gold {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.4) 0%, rgba(255, 193, 7, 0.25) 100%);
    border: 2px solid rgba(255, 215, 0, 0.7);
    box-shadow: 0 2px 12px rgba(255, 215, 0, 0.5), inset 0 0 20px rgba(255, 215, 0, 0.1);
    padding: 14px 15px;
}

.ranking-item.silver {
    background: linear-gradient(135deg, rgba(192, 192, 192, 0.4) 0%, rgba(169, 169, 169, 0.25) 100%);
    border: 2px solid rgba(192, 192, 192, 0.7);
    box-shadow: 0 2px 12px rgba(192, 192, 192, 0.5), inset 0 0 20px rgba(192, 192, 192, 0.1);
    padding: 14px 15px;
}

.ranking-item.bronze {
    background: linear-gradient(135deg, rgba(205, 127, 50, 0.4) 0%, rgba(184, 115, 51, 0.25) 100%);
    border: 2px solid rgba(205, 127, 50, 0.7);
    box-shadow: 0 2px 12px rgba(205, 127, 50, 0.5), inset 0 0 20px rgba(205, 127, 50, 0.1);
    padding: 14px 15px;
}

/* 1〜3位の順位を大きく */
.ranking-item.gold .ranking-rank,
.ranking-item.silver .ranking-rank,
.ranking-item.bronze .ranking-rank {
    font-size: 1.5rem;
    min-width: 45px;
}

/* 1〜3位の名前を大きく */
.ranking-item.gold .ranking-name,
.ranking-item.silver .ranking-name,
.ranking-item.bronze .ranking-name {
    font-size: 1.1rem;
}

.ranking-name {
    flex: 1;
    font-size: 1rem;
    text-align: left;
    margin-left: 10px;
}

.ranking-details {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.ranking-score {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffd700;
}

.ranking-max-tile {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

.ranking-date {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
}

.no-ranking {
    color: rgba(255, 255, 255, 0.5);
    padding: 40px 0;
}

.loading {
    color: rgba(255, 255, 255, 0.7);
    padding: 40px 0;
    text-align: center;
}

/* レスポンシブ */
@media (max-width: 500px) {
    .board {
        width: 320px;
        height: 320px;
        padding: 8px;
    }

    .grid-background {
        gap: 8px;
        top: 8px;
        left: 8px;
        right: 8px;
        bottom: 8px;
    }

    .tile-container {
        top: 8px;
        left: 8px;
        right: 8px;
        bottom: 8px;
    }

    .game-header {
        flex-direction: column;
        text-align: center;
    }

    .game-header h1 {
        font-size: 1.5rem;
    }

    .game-controls {
        justify-content: center;
    }

    .btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }

    .controls-help {
        display: none;
    }

    .mobile-controls-help {
        display: flex;
    }

    .info-value {
        font-size: 1.2rem;
    }
}

@media (max-width: 350px) {
    .board {
        width: 280px;
        height: 280px;
    }
}