/* ============================================
   草原绿主题 - Grassland Green Theme
   ============================================ */

:root {
    /* 主色调 */
    --grass-green: #4CAF50;
    --grass-green-dark: #388E3C;
    --grass-green-light: #C8E6C9;
    --grass-green-bg: #E8F5E9;
    /* 语义色 */
    --danger: #E53935;
    --warning: #FB8C00;
    --info: #039BE5;
    --dark: #2E3B2E;
    /* 渐变 */
    --green-gradient: linear-gradient(135deg, #4CAF50, #66BB6A);
    --green-gradient-dark: linear-gradient(135deg, #2E7D32, #388E3C);
    /* 圆角 */
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow: 0 4px 12px rgba(46, 125, 50, 0.15);
    --shadow-lg: 0 8px 30px rgba(46, 125, 50, 0.2);
}

/* ============ 整体背景 ============ */
body {
    background: linear-gradient(180deg, #f0f7f0 0%, #e8f0e8 100%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #2E3B2E;
    min-height: 100vh;
}

/* ============ 导航栏 ============ */
.navbar-custom {
    background: var(--green-gradient-dark) !important;
    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

    .navbar-custom .navbar-brand {
        color: #fff !important;
        font-weight: 700;
        font-size: 1.3rem;
        letter-spacing: 0.5px;
    }

        .navbar-custom .navbar-brand i {
            margin-right: 8px;
        }

    .navbar-custom .nav-link {
        color: rgba(255,255,255,0.85) !important;
        transition: all 0.2s;
        font-weight:bold;
    }

        .navbar-custom .nav-link:hover {
            color: #fff !important;
            background: rgba(255,255,255,0.1);
            border-radius: var(--radius-sm);
        }

/* ============ 卡片 ============ */
.card {
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    background: #fff;
}

    .card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }

.card-header {
    background: var(--green-gradient);
    color: #fff;
    border-radius: var(--radius) var(--radius) 0 0 !important;
    font-weight: 600;
    border: none;
}

/* ============ 按钮 ============ */
.btn-primary {
    background: var(--green-gradient);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.2s;
}

    .btn-primary:hover {
        background: linear-gradient(135deg, #388E3C, #4CAF50);
        transform: translateY(-1px);
        box-shadow: var(--shadow);
    }

.btn-outline-primary {
    color: var(--grass-green);
    border-color: var(--grass-green);
    border-radius: var(--radius-sm);
}

    .btn-outline-primary:hover {
        background: var(--grass-green);
        border-color: var(--grass-green);
    }

/* ============ 表格 ============ */
.table {
    border-radius: var(--radius-sm);
    overflow: hidden;
}

    .table thead {
        background: var(--grass-green-bg);
    }

        .table thead th {
            color: var(--grass-green-dark);
            font-weight: 600;
            border-bottom: 2px solid var(--grass-green);
        }

/* ============ 表单 ============ */
.form-control:focus, .form-select:focus {
    border-color: var(--grass-green);
    box-shadow: 0 0 0 0.2rem rgba(76, 175, 80, 0.25);
}

/* ============ 答题页样式 ============ */

/* 进度条 */
.survey-progress {
    height: 6px;
    border-radius: 3px;
    background: #e0e0e0;
}

.survey-progress-bar {
    background: var(--green-gradient);
    border-radius: 3px;
    transition: width 0.3s ease;
}

/* 题目标题 */
.question-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: #1b3a1b;
    line-height: 1.6;
}

/* 选项 */
.option-item {
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.15s;
    margin-bottom: 4px;
}

    .option-item:hover {
        background: var(--grass-green-bg);
        border-color: var(--grass-green-light);
    }

.option-selected {
    background: var(--grass-green-bg) !important;
    border-color: var(--grass-green) !important;
}

.option-item input[type="radio"],
.option-item input[type="checkbox"] {
    accent-color: var(--grass-green);
}

/* 判断题 */
.tf-option {
    padding: 8px 20px;
    border: 2px solid #ddd;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
}

    .tf-option:hover {
        border-color: #4CAF50;
        background: #f1f8e9;
    }

.tf-selected {
    border-color: #4CAF50 !important;
    background: #E8F5E9 !important;
    color: #2E7D32;
    font-weight: bold;
}
.tf-option input {
    display: none;
}

/* 星级评分 */

.rating-stars {
    display: inline-flex;
    gap: 4px;
}

.star {
    font-size: 2rem;
    color: #ddd;
    cursor: pointer;
    transition: all 0.15s;
    user-select: none;
}

.star-active {
    color: #FFB300;
}
/* NPS */
.nps-scale {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.nps-box {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.15s;
    color: #fff;
    font-size: 0.9rem;
}

.nps-detractor {
    background: #EF9A9A;
}

.nps-passive {
    background: #FFCC80;
}

.nps-promoter {
    background: #A5D6A7;
}

.nps-box:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.nps-selected {
    background: #4CAF50 !important;
    color: #fff !important;
    transform: scale(1.15);
    border-color: #2E7D32 !important;
}

/* 滑块 */
.slider-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.slider-min, .slider-max {
    font-weight: 600;
    color: var(--grass-green-dark);
    min-width: 40px;
}

/* 图片选择 */
.image-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}

.image-option {
    border: 3px solid #e0e0e0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s;
}

    .image-option:hover {
        border-color: var(--grass-green-light);
        transform: translateY(-2px);
    }

    .image-option img {
        width: 100%;
        height: 120px;
        object-fit: cover;
    }

.image-option-label {
    padding: 8px;
    text-align: center;
    font-weight: 500;
}

.image-selected {
    border-color: var(--grass-green) !important;
    box-shadow: 0 0 0 3px rgba(76,175,80,0.3);
}

/* 排序 */
.sort-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sort-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: #fff;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-sm);
    cursor: grab;
    transition: all 0.15s;
}

    .sort-item:hover {
        border-color: var(--grass-green-light);
        background: var(--grass-green-bg);
    }

    .sort-item.dragging {
        opacity: 0.5;
        border-style: dashed;
    }

.sort-handle {
    font-size: 1.2rem;
    color: #999;
    cursor: grab;
}

.sort-num {
    width: 24px;
    height: 24px;
    background: var(--grass-green);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
}

/* 矩阵 */
.matrix-table-wrapper {
    overflow-x: auto;
}

.matrix-table th {
    background: var(--grass-green-bg);
    font-size: 0.85rem;
    white-space: nowrap;
}

.matrix-row-label {
    font-weight: 500;
    background: #fafafa;
    min-width: 120px;
}

.matrix-cell input[type="radio"] {
    accent-color: var(--grass-green);
}

/* 文件上传 */
.file-upload-area {
    border: 2px dashed var(--grass-green-light);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    transition: all 0.2s;
    cursor: pointer;
}

    .file-upload-area:hover {
        border-color: var(--grass-green);
        background: var(--grass-green-bg);
    }

.file-upload-label {
    cursor: pointer;
    color: var(--grass-green-dark);
    font-size: 1.1rem;
}

    .file-upload-label i {
        font-size: 2rem;
        display: block;
        margin-bottom: 8px;
    }

/* 验证错误 */
.question-error {
    border-left: 4px solid var(--danger) !important;
    padding-left: 12px;
    background: #FFF5F5 !important;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* 考试倒计时 */
.exam-timer {
    font-size: 1.4rem;
    font-weight: 700;
    font-family: 'Courier New', monospace;
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    background: var(--grass-green-light);
    color: var(--grass-green-dark);
}

    .exam-timer.timer-warning {
        background: #FFF3E0;
        color: #E65100;
        animation: pulse 1s infinite;
    }

    .exam-timer.timer-danger {
        background: #FFEBEE;
        color: #C62828;
        animation: pulse 0.5s infinite;
    }

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}

/* 描述文字 */
.description-text .description-content {
    font-size: 0.95rem;
    color: #555;
    line-height: 1.8;
}

/* 统计图表区域 */
.stat-card {
    text-align: center;
    padding: 24px;
}

    .stat-card .stat-number {
        font-size: 2.5rem;
        font-weight: 700;
        color: var(--grass-green-dark);
    }

    .stat-card .stat-label {
        color: #666;
        margin-top: 4px;
    }

/* 响应式 */
@media (max-width: 768px) {
    .nps-box {
        width: 34px;
        height: 34px;
        font-size: 0.75rem;
    }

    .image-options {
        grid-template-columns: repeat(2, 1fr);
    }

    .matrix-table th,
    .matrix-table td {
        font-size: 0.75rem;
        padding: 6px;
    }
}
.survey-progress {
    height: 6px;
    background: #e9ecef;
    border-radius: 3px;
}

.survey-progress-bar {
    height: 6px;
    background: #4CAF50;
    border-radius: 3px;
    width: 0%;
}