:root {
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
    position: relative;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
}

.language-selector {
    position: absolute;
    top: 0;
    right: 0;
}

#languageSelect {
    padding: 8px 16px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 0.95rem;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

#languageSelect:hover {
    background: rgba(255, 255, 255, 0.3);
}

#languageSelect option {
    background: var(--text-dark);
}

main {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow);
}

.input-section {
    margin-bottom: 30px;
}

.input-group {
    margin-bottom: 25px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

input[type="text"],
select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e8ed;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--bg-white);
}

input[type="text"]:focus,
select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(78, 205, 196, 0.1);
}

.generate-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-color), #ff5252);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
}

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

.loading-section {
    text-align: center;
    padding: 40px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    margin: 0 auto 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.hidden {
    display: none !important;
}

.results-section h2 {
    color: var(--text-dark);
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.names-list {
    display: grid;
    gap: 20px;
}

.name-card {
    background: var(--bg-light);
    padding: 25px;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.name-card:hover {
    border-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.name-main {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.name-reading {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 15px;
}

.name-details {
    border-top: 1px solid #e1e8ed;
    padding-top: 15px;
    display: grid;
    gap: 8px;
}

.name-details p {
    font-size: 0.95rem;
    color: var(--text-light);
}

.label {
    font-weight: 600;
    color: var(--text-dark);
}

footer {
    text-align: center;
    margin-top: 40px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header {
        margin-bottom: 30px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    main {
        padding: 25px;
    }
    
    .language-selector {
        position: static;
        margin-top: 20px;
    }
    
    #languageSelect {
        width: auto;
        margin: 0 auto;
        display: block;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.6rem;
    }
    
    main {
        padding: 20px;
    }
    
    .name-main {
        font-size: 1.5rem;
    }
}