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

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.toolbar {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 1100;
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.9);
    padding: 8px 12px;
    border-radius: 999px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.lang-label {
    color: #444;
    font-size: 0.9em;
    font-weight: 500;
}

.lang-select {
    border: 1px solid #d8d8d8;
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 0.9em;
    background: #fff;
    cursor: pointer;
}

.lang-select:focus {
    outline: none;
    border-color: #667eea;
}

.container {
    width: 100%;
    max-width: 700px;
    min-height: 500px;
}

.page {
    display: none;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    animation: fadeIn 0.5s ease;
}

.page.active {
    display: block;
}

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

/* 开始页面 */
#start-page {
    padding: 60px 40px;
    text-align: center;
}

.start-content {
    max-width: 500px;
    margin: 0 auto;
}

.logo {
    margin-bottom: 30px;
}

.logo-icon {
    font-size: 80px;
    display: block;
    margin-bottom: 20px;
    animation: bounce 2s infinite;
}

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

.logo h1 {
    font-size: 2.5em;
    color: #333;
    font-weight: 700;
}

.subtitle {
    font-size: 1.2em;
    color: #666;
    margin-bottom: 40px;
}

.info-cards {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: #f8f9fa;
    border-radius: 12px;
    font-size: 0.95em;
    color: #555;
}

.card-icon {
    font-size: 1.2em;
}

.primary-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 18px 60px;
    font-size: 1.2em;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.5);
}

.secondary-btn {
    background: #f0f0f0;
    color: #333;
    border: none;
    padding: 14px 40px;
    font-size: 1em;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.secondary-btn:hover {
    background: #e0e0e0;
}

.secondary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.disclaimer {
    margin-top: 30px;
    font-size: 0.85em;
    color: #999;
}

/* 测试页面 */
#test-page {
    padding: 40px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
    border-radius: 10px;
}

.progress-text {
    text-align: center;
    color: #666;
    font-size: 0.9em;
    margin-bottom: 40px;
}

#question-number {
    font-weight: 700;
    color: #667eea;
}

.question-container {
    text-align: center;
    padding: 20px 0;
}

#question-text {
    font-size: 1.4em;
    color: #333;
    line-height: 1.6;
    margin-bottom: 40px;
    min-height: 80px;
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 400px;
    margin: 0 auto;
}

.option-btn {
    background: #f8f9fa;
    border: 2px solid transparent;
    padding: 16px 24px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1em;
    text-align: center;
}

.option-btn:hover {
    background: #f0f0f0;
    border-color: #667eea;
}

.option-btn.selected {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

.option-label {
    font-weight: 500;
    line-height: 1.5;
}

.nav-buttons {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

/* 结果页面 */
#result-page {
    padding: 50px 40px;
    text-align: center;
}

.result-content {
    max-width: 550px;
    margin: 0 auto;
}

.result-header h1 {
    font-size: 1.8em;
    color: #333;
    margin-bottom: 10px;
}

.result-header p {
    color: #666;
    font-size: 1.1em;
    margin-bottom: 30px;
}

.type-badge {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px 50px;
    border-radius: 20px;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.type-badge .type-code {
    font-size: 2.5em;
    font-weight: 700;
    color: white;
    letter-spacing: 4px;
}

.type-name {
    font-size: 1.5em;
    color: #667eea;
    margin-bottom: 40px;
    font-weight: 500;
}

.dimension-bars {
    text-align: left;
    margin-bottom: 40px;
}

.dimension {
    margin-bottom: 25px;
}

.dimension-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.9em;
}

.label-left {
    color: #667eea;
    font-weight: 500;
}

.label-right {
    color: #764ba2;
    font-weight: 500;
}

.dimension-bar {
    display: flex;
    height: 12px;
    background: #f0f0f0;
    border-radius: 10px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    transition: width 0.8s ease;
}

.e-bar, .s-bar, .t-bar, .j-bar {
    background: linear-gradient(90deg, #667eea, #818cf8);
    border-radius: 10px 0 0 10px;
}

.i-bar, .n-bar, .f-bar, .p-bar {
    background: linear-gradient(90deg, #a78bfa, #764ba2);
    border-radius: 0 10px 10px 0;
}

.dimension-percent {
    display: flex;
    justify-content: space-between;
    margin-top: 5px;
    font-size: 0.85em;
    color: #888;
}

.type-description {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 15px;
    text-align: left;
    margin-bottom: 30px;
    line-height: 1.8;
    color: #555;
}

.result-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 响应式设计 */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    .toolbar {
        top: 10px;
        right: 10px;
        padding: 6px 10px;
    }

    .lang-label {
        display: none;
    }

    #start-page {
        padding: 40px 25px;
    }

    .logo h1 {
        font-size: 2em;
    }

    .logo-icon {
        font-size: 60px;
    }

    .info-cards {
        flex-direction: column;
        align-items: center;
    }

    .info-card {
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }

    #test-page {
        padding: 30px 20px;
    }

    #question-text {
        font-size: 1.2em;
    }

    .option-btn {
        padding: 14px 20px;
    }

    #result-page {
        padding: 40px 25px;
    }

    .type-badge .type-code {
        font-size: 2em;
        letter-spacing: 2px;
    }

    .type-name {
        font-size: 1.2em;
    }

    .result-actions {
        flex-direction: column;
    }

    .primary-btn, .secondary-btn {
        width: 100%;
    }
}

/* 动画效果 */
@media (prefers-reduced-motion: no-preference) {
    .option-btn {
        animation: slideUp 0.3s ease backwards;
    }

    .option-btn:nth-child(1) { animation-delay: 0.1s; }
    .option-btn:nth-child(2) { animation-delay: 0.15s; }
    .option-btn:nth-child(3) { animation-delay: 0.2s; }
    .option-btn:nth-child(4) { animation-delay: 0.25s; }
    .option-btn:nth-child(5) { animation-delay: 0.3s; }
}

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

/* Toast通知 */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 15px 30px;
    border-radius: 10px;
    font-size: 0.95em;
    z-index: 1000;
    animation: toastIn 0.3s ease;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translate(-50%, 20px);
    }
    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

/* 题库查看页面 */
#questions-page {
    padding: 40px;
    max-height: 90vh;
    overflow-y: auto;
}

.questions-content {
    max-width: 800px;
    margin: 0 auto;
}

.questions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.questions-header h1 {
    font-size: 2em;
    color: #333;
}

.questions-filter {
    margin-bottom: 30px;
}

.questions-filter label {
    font-size: 1em;
    color: #555;
}

.questions-filter select {
    margin-left: 10px;
    padding: 8px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 0.95em;
    background: white;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.questions-filter select:focus {
    outline: none;
    border-color: #667eea;
}

.questions-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.question-item {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 15px;
    border-left: 4px solid #667eea;
    transition: all 0.3s ease;
}

.question-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.question-number-badge {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85em;
    font-weight: 600;
    margin-bottom: 10px;
}

.question-dimension {
    color: #764ba2;
    font-size: 0.9em;
    font-weight: 500;
    margin-bottom: 10px;
}

.question-text-preview {
    font-size: 1.1em;
    color: #333;
    margin-bottom: 15px;
    line-height: 1.6;
}

.question-options-preview {
    background: white;
    padding: 15px;
    border-radius: 10px;
}

.option-preview {
    padding: 10px;
    margin-bottom: 8px;
    border-left: 3px solid #e0e0e0;
}

.option-preview:last-child {
    margin-bottom: 0;
}

.option-letter {
    font-weight: 700;
    color: #667eea;
    margin-right: 8px;
}

.option-text {
    color: #555;
}

.option-indicator {
    display: block;
    font-size: 0.8em;
    color: #888;
    margin-top: 5px;
    font-style: italic;
}

/* 响应式优化 - 题库页面 */
@media (max-width: 600px) {
    #questions-page {
        padding: 30px 20px;
    }

    .questions-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .questions-header h1 {
        font-size: 1.5em;
    }

    .question-item {
        padding: 20px 15px;
    }
}