/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

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

/* 通用按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
    margin: 5px;
}

.btn-primary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: #e0e0e0;
    color: #333;
}

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

/* 头部样式 */
header {
    background: rgba(255,255,255,0.95);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 2.5rem;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-top: 10px;
}

/* 首页英雄区域 */
.hero {
    display: flex;
    align-items: center;
    gap: 40px;
    background: rgba(255,255,255,0.95);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.hero-content {
    flex: 1;
}

.hero-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: #333;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #666;
}

.features {
    list-style: none;
    margin-bottom: 30px;
}

.features li {
    padding: 10px 0;
    font-size: 1.1rem;
    color: #555;
    border-bottom: 1px solid #eee;
}

.features li:last-child {
    border-bottom: none;
}

/* 面试流程图解 */
.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.interview-illustration {
    position: relative;
    width: 300px;
    height: 200px;
}

.person, .ai-robot {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
}

.person {
    background: #667eea;
    left: 0;
    bottom: 0;
}

.ai-robot {
    background: #4ecdc4;
    right: 0;
    bottom: 0;
}

.chat-bubbles {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
}

.bubble {
    padding: 15px;
    border-radius: 20px;
    margin: 10px 0;
    max-width: 180px;
    position: relative;
    font-size: 0.9rem;
}

.person-bubble {
    background: #667eea;
    color: white;
    margin-left: 0;
}

.person-bubble::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 20px;
    border-width: 8px 8px 0;
    border-style: solid;
    border-color: #667eea transparent;
}

.ai-bubble {
    background: #4ecdc4;
    color: white;
    margin-left: auto;
}

.ai-bubble::after {
    content: '';
    position: absolute;
    bottom: -8px;
    right: 20px;
    border-width: 8px 8px 0;
    border-style: solid;
    border-color: #4ecdc4 transparent;
}

/* 面试流程页面布局 */
.interview-container {
    display: flex;
    gap: 20px;
    background: rgba(255,255,255,0.95);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* 侧边栏样式 */
.process-sidebar {
    width: 300px;
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    height: fit-content;
    position: sticky;
    top: 20px;
}

.process-sidebar h2 {
    margin-bottom: 20px;
    color: #333;
    font-size: 1.3rem;
}

.process-step {
    display: flex;
    gap: 15px;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
    border: 2px solid transparent;
}

.process-step:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.process-step.active {
    border-color: #667eea;
    background: #f0f4ff;
}

.step-number {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #667eea;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    flex-shrink: 0;
}

.process-step.active .step-number {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
}

.step-content h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: #333;
}

.step-content p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 5px;
}

.step-duration {
    font-size: 0.8rem;
    color: #999;
}

/* 主面试区域 */
.interview-main {
    flex: 1;
    background: white;
    padding: 30px;
    border-radius: 10px;
}

.interview-stage {
    transition: all 0.3s ease;
}

.interview-stage.hidden {
    display: none;
}

#current-question-title {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #333;
}

#current-question-description {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #666;
    line-height: 1.8;
}

/* 回答输入区域 */
.answer-input textarea {
    width: 100%;
    height: 200px;
    padding: 15px;
    border: 2px solid #ddd;
    border-radius: 10px;
    font-size: 1.1rem;
    font-family: inherit;
    resize: vertical;
    margin-bottom: 20px;
    transition: border-color 0.3s ease;
}

.answer-input textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-start;
}

/* AI分析结果区域 */
.analysis-results {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.score-card {
    text-align: center;
    background: white;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.score-card h3 {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 10px;
}

.score-value {
    font-size: 3rem;
    font-weight: bold;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.analysis-details h3, .suggestions h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #333;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
}

.progress-bars {
    margin-bottom: 30px;
}

.progress-bar {
    margin-bottom: 20px;
}

.progress-bar label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #555;
}

.progress {
    height: 15px;
    background: #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 5px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #4ecdc4, #45b7aa);
    border-radius: 10px;
    transition: width 0.5s ease;
}

.progress-value {
    font-size: 0.9rem;
    color: #666;
    font-weight: bold;
}

.suggestions ul {
    list-style: none;
}

.suggestions li {
    padding: 12px 20px;
    margin-bottom: 10px;
    background: white;
    border-left: 4px solid #667eea;
    border-radius: 5px;
    color: #555;
    transition: all 0.3s ease;
}

.suggestions li:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

/* 面试结果弹窗 */
.modal {
    display: flex;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    justify-content: center;
    align-items: center;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: white;
    padding: 40px;
    border-radius: 15px;
    width: 80%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

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

.close:hover {
    color: #333;
}

/* 页脚 */
footer {
    margin-top: 40px;
    padding: 20px;
    text-align: center;
    background: rgba(255,255,255,0.95);
    border-radius: 10px;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }
    
    .interview-container {
        flex-direction: column;
    }
    
    .process-sidebar {
        width: 100%;
        position: static;
    }
    
    .input-actions {
        flex-direction: column;
    }
    
    .input-actions .btn {
        width: 100%;
        margin: 5px 0;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .hero {
        padding: 20px;
    }
    
    .hero-content h2 {
        font-size: 1.6rem;
    }
    
    .interview-main {
        padding: 20px;
    }
    
    #current-question-title {
        font-size: 1.5rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero, .interview-stage, .process-step {
    animation: fadeIn 0.5s ease-out;
}