:root {
    --primary-color: #6c5ce7;
    --secondary-color: #fd79a8;
    --bg-color: #f5f3ff;
    --text-color: #2d3436;
    --card-bg: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    animation: fadeInDown 0.6s ease-out;
}

h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.2rem;
    color: #636e72;
}

main {
    display: grid;
    gap: 30px;
}

section {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px var(--shadow);
    animation: fadeInUp 0.6s ease-out;
}

h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.5rem;
}

/* 絵文字パレット */
.emoji-categories {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.category-btn {
    padding: 8px 16px;
    border: 2px solid var(--primary-color);
    background: white;
    color: var(--primary-color);
    border-radius: 25px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.category-btn:hover,
.category-btn.active {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    gap: 10px;
    max-height: 300px;
    overflow-y: auto;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 8px;
}

.emoji-item {
    font-size: 2rem;
    padding: 10px;
    cursor: grab;
    text-align: center;
    background: white;
    border-radius: 8px;
    transition: var(--transition);
    user-select: none;
}

.emoji-item:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 8px var(--shadow);
}

.emoji-item.dragging {
    cursor: grabbing;
    opacity: 0.5;
}

/* ストーリーボード */
.story-canvas {
    min-height: 300px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: var(--border-radius);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.drop-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #636e72;
    font-size: 1.2rem;
    pointer-events: none;
    opacity: 0.5;
}

.story-emoji {
    position: absolute;
    font-size: 3rem;
    cursor: move;
    transition: transform 0.2s;
    animation: popIn 0.3s ease-out;
}

.story-emoji:hover {
    transform: scale(1.1);
}

.story-emoji.moving {
    transition: none;
}

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

/* ストーリーコントロール */
.story-controls {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    justify-content: center;
}

.control-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    gap: 5px;
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

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

/* ストーリー設定 */
.settings-group {
    margin-bottom: 15px;
}

.settings-group label {
    display: block;
    margin-bottom: 5px;
    color: #636e72;
}

.settings-group input[type="text"],
.settings-group select {
    width: 100%;
    padding: 10px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    transition: var(--transition);
}

.settings-group input[type="text"]:focus,
.settings-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.settings-group input[type="range"] {
    width: 70%;
    margin-right: 10px;
}

#speed-value {
    color: var(--primary-color);
    font-weight: bold;
}

/* 保存済みストーリー */
.saved-list {
    display: grid;
    gap: 15px;
}

.story-item {
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.story-item:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.story-info h3 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.story-preview {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.story-date {
    color: #636e72;
    font-size: 0.9rem;
}

.story-actions {
    display: flex;
    gap: 10px;
}

.story-actions button {
    padding: 5px 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
}

.load-btn {
    background: var(--primary-color);
    color: white;
}

.delete-btn {
    background: #e74c3c;
    color: white;
}

/* モーダル */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 30px;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: slideIn 0.3s;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    cursor: pointer;
    color: #636e72;
}

.close:hover {
    color: var(--text-color);
}

.share-options {
    display: flex;
    gap: 15px;
    margin: 20px 0;
}

.share-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.share-btn[data-platform="twitter"] {
    background: #1DA1F2;
    color: white;
}

.share-btn[data-platform="copy"] {
    background: var(--primary-color);
    color: white;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

.share-link {
    padding: 10px;
    background: #f8f9fa;
    border-radius: 8px;
    word-break: break-all;
    display: none;
}

/* フッター */
footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    color: #636e72;
}

/* アニメーション */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* プレイ中のアニメーション */
.playing .story-emoji {
    animation: storyMove 2s ease-in-out infinite;
}

@keyframes storyMove {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* レスポンシブ */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .emoji-grid {
        grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    }
    
    .story-canvas {
        min-height: 200px;
    }
    
    .story-controls {
        flex-wrap: wrap;
    }
    
    .control-btn {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
}