/* Main CSS for AI Text Detection Tool */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background: linear-gradient(135deg, #1a2a6c, #b21f1f, #1a2a6c);
    color: #333;
    min-height: 100vh;
    padding: 10px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    overflow: hidden;
}

/* 移动端响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 5px;
    }
    
    .container {
        border-radius: 10px;
    }
    
    header {
        padding: 10px !important;
        min-height: 100px !important;
    }
    
    .content {
        padding: 15px !important;
    }
    
    .section {
        padding: 15px !important;
        margin-bottom: 20px !important;
    }
    
    .section-title {
        font-size: 1.2rem;
        margin-bottom: 15px;
    }
    
    textarea {
        height: 150px;
        font-size: 14px;
        padding: 12px;
    }
    
    .example-buttons {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .example-btn {
        padding: 8px;
        font-size: 14px;
    }
    
    .submit-btn {
        padding: 12px;
        font-size: 16px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .feature-card {
        padding: 10px;
    }
    
    .feature-name {
        font-size: 12px;
    }
    
    .feature-value {
        font-size: 1.2rem;
    }
    
    .indicator-list, .pattern-list, .structure-list {
        gap: 5px;
    }
    
    .indicator-tag, .pattern-tag, .structure-tag {
        font-size: 12px;
        padding: 4px 8px;
    }
    
    .reduce-ai-section {
        padding: 12px !important;
    }
    
    .reduce-ai-section h3 {
        font-size: 1.1rem;
    }
    
    .reduce-ai-controls {
        flex-direction: column;
        gap: 8px;
        align-items: stretch;
    }
    
    .dash-count-input {
        width: 100%;
    }
    
    .reduce-btn, .copy-btn {
        width: 100%;
        padding: 10px;
        font-size: 14px;
    }
    
    .progress-container {
        margin-bottom: 10px !important;
    }
    
    .progress-labels {
        font-size: 0.8rem !important;
        margin-bottom: 5px !important;
    }
    
    .progress-bar {
        height: 20px !important;
    }
    
    .progress-text {
        font-size: 0.9rem !important;
    }
    
    .verdict-text {
        font-size: 1rem !important;
    }
    
    .stats-info {
        gap: 10px !important;
        font-size: 0.8rem !important;
    }
}

@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    header {
        min-height: 80px !important;
    }
    
    .progress-bar {
        height: 18px !important;
    }
    
    .progress-text {
        font-size: 0.8rem !important;
    }
    
    .verdict-text {
        font-size: 0.9rem !important;
    }
    
    .stats-info {
        flex-direction: column;
        gap: 5px !important;
    }
    
    .section-title {
        font-size: 1.1rem;
    }
    
    textarea {
        height: 120px;
    }
}

header {
    background: #2c3e50;
    color: white;
    padding: 15px;
    text-align: center;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.content {
    padding: 30px;
}

.section {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.input-section, .result-section {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.section-title {
    color: #2c3e50;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #3498db;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
}

.section h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 10px;
}

textarea {
    width: 100%;
    height: 200px;
    padding: 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    resize: vertical;
}

textarea:focus {
    border-color: #3498db;
    outline: none;
}

.example-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin: 15px 0;
}

.example-btn {
    padding: 10px;
    background: #e9ecef;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
}

.example-btn:hover {
    background: #3498db;
    color: white;
}

.submit-btn {
    display: block;
    width: 100%;
    padding: 15px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    transition: background 0.3s;
    margin-top: 15px;
}

.submit-btn:hover {
    background: #2980b9;
}

.result-box {
    background: white;
    border-radius: 8px;
    padding: 20px;
    margin-top: 20px;
}

.probability-box {
    text-align: center;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    background: linear-gradient(to right, #e74c3c, #f39c12, #2ecc71);
    position: relative;
}

.probability-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: rgba(255, 255, 255, 0.3);
}

.probability-text {
    font-size: 2.5rem;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
    position: relative;
    z-index: 2;
}

.verdict-text {
    font-size: 1.5rem;
    font-weight: bold;
    position: relative;
    z-index: 2;
}

.human-text { color: #27ae60; }
.ai-text { color: #e74c3c; }
.uncertain-text { color: #f39c12; }

.warning-box {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.feature-card {
    background: white;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

.feature-name {
    font-weight: bold;
    color: #7f8c8d;
    margin-bottom: 8px;
    font-size: 14px;
}

.feature-value {
    font-size: 1.4rem;
    font-weight: bold;
    color: #2c3e50;
}

.indicators, .logical-patterns, .argument-structures {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.indicator-list, .pattern-list, .structure-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.indicator-tag {
    background: #e74c3c;
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 14px;
}

.pattern-tag {
    background: #3498db;
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 14px;
}

.structure-tag {
    background: #9b59b6;
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 14px;
}

footer {
    text-align: center;
    padding: 20px;
    color: #7f8c8d;
    background: #f8f9fa;
    margin-top: 30px;
}

.disclaimer {
    max-width: 700px;
    margin: 0 auto 15px;
}

.stats-info {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 15px 0;
    color: #7f8c8d;
}

.analysis-section {
    margin-top: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.analysis-title {
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 降低AI浓度功能样式 */
.reduce-ai-section {
    margin: 15px 0;
    padding: 15px;
    background: #e8f4fd;
    border-radius: 8px;
    border: 1px solid #b3d9ff;
}

.reduce-ai-section h3 {
    margin-bottom: 10px;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 8px;
}

.reduce-ai-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.dash-count-input {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    width: 80px;
}

.reduce-btn {
    padding: 8px 15px;
    background: #9b59b6;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

.reduce-btn:hover {
    background: #8e44ad;
}

.reduce-tip {
    margin-top: 8px;
    font-size: 12px;
    color: #7f8c8d;
}