/* 全局样式 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    background-image: 
        linear-gradient(rgba(0, 123, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 123, 255, 0.1) 1px, transparent 1px),
        linear-gradient(rgba(0, 123, 255, 0.06) 0.5px, transparent 0.5px),
        linear-gradient(90deg, rgba(0, 123, 255, 0.06) 0.5px, transparent 0.5px);
    background-size: 50px 50px, 50px 50px, 10px 10px, 10px 10px;
    background-position: center center;
}

/* 渐变背景 */
.bg-gradient-primary {
    background: linear-gradient(135deg, #1a2a6c 0%, #2a4858 50%, #003366 100%);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.bg-gradient-primary::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
    animation: shimmer 15s infinite linear;
    pointer-events: none;
}

@keyframes shimmer {
    0% {
        transform: translate(-30%, -30%) rotate(0deg);
    }
    100% {
        transform: translate(-30%, -30%) rotate(360deg);
    }
}

/* 卡片样式 */
.card {
    border: none;
    transition: transform 0.2s, box-shadow 0.2s;
    background-color: #ffffff;
    border-radius: 12px;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15) !important;
}

.card-header {
    border-bottom: none;
    font-weight: 600;
    padding: 1rem 1.25rem;
}

/* 预览区域 */
#previewArea {
    min-height: 220px;
    transition: all 0.3s ease;
    background-color: #ffffff;
    border: 1px dashed rgba(0, 0, 0, 0.1) !important;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

#previewArea:hover {
    border-color: rgba(44, 83, 100, 0.3) !important;
    background-color: #ffffff;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
}

.empty-state {
    transition: opacity 0.3s ease;
}

.empty-state .bi {
    color: rgba(44, 83, 100, 0.2);
}

#badgePreview:not(.d-none) + .empty-state {
    display: none;
}

/* 配色示例 */
.color-example {
    height: 110px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px;
    background-color: #ffffff;
    margin-bottom: 15px;
    border: 2px solid transparent;
}

.color-example:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
    border-color: rgba(44, 83, 100, 0.3);
}

.color-example.border-primary {
    border-color: #1a2a6c !important;
    box-shadow: 0 8px 16px rgba(26, 42, 108, 0.15);
    background-color: rgba(26, 42, 108, 0.02);
}

.color-example img {
    max-width: 100%;
    height: auto;
    margin-bottom: 8px;
}

.color-example p {
    margin: 5px 0 0;
    font-size: 12px;
    color: #2c5364;
    font-weight: 500;
    text-align: center;
}

/* 配色示例容器 */
#colorExamples {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

@media (max-width: 992px) {
    #colorExamples {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    #colorExamples {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    #colorExamples {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .color-example {
        height: 90px;
        padding: 8px;
    }
}

.fallback-badge {
    display: inline-block;
    background-color: #f0f0f0;
    border: 1px solid #ddd;
    border-radius: 3px;
    padding: 3px 8px;
    font-size: 12px;
    margin-bottom: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.fallback-badge:hover {
    background-color: #e0e0e0;
}

/* 表单元素 */
.form-control, .form-select {
    border-radius: 8px;
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: rgba(44, 83, 100, 0.5);
    box-shadow: 0 0 0 0.25rem rgba(44, 83, 100, 0.15);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #2c5364;
    letter-spacing: 0.3px;
}

.form-check-input:checked {
    background-color: #2c5364;
    border-color: #2c5364;
}

.form-control-color {
    height: 38px;
}

/* 按钮动画 */
.btn {
    transition: all 0.2s;
    border-radius: 6px;
    font-weight: 500;
    letter-spacing: 0.3px;
}

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

.btn-primary {
    background: linear-gradient(90deg, #1a2a6c 0%, #2c5364 100%);
    border: none;
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    background: linear-gradient(90deg, #0f2027 0%, #2c5364 100%) !important;
}

.btn-success {
    background: linear-gradient(90deg, #134e5e 0%, #28a745 100%);
    border-color: transparent;
}

.btn-success:hover {
    background: linear-gradient(90deg, #0f3443 0%, #218838 100%) !important;
    border-color: transparent;
}

/* 复制按钮成功状态 */
.btn-clipboard-success {
    background: linear-gradient(90deg, #134e5e 0%, #28a745 100%) !important;
    border-color: transparent !important;
    color: white !important;
}

/* 输入组样式 */
.input-group-text {
    background-color: #f8f9fa;
    border-color: #dee2e6;
    color: #495057;
}

.form-control, .form-select {
    border-color: #dee2e6;
    background-color: #fff;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .card {
        margin-bottom: 20px;
    }
}

@media (max-width: 768px) {
    .display-4 {
        font-size: 2.5rem;
    }
    
    .lead {
        font-size: 1rem;
    }
}

/* 导航栏样式 */
.navbar {
    background: linear-gradient(90deg, #0f2027 0%, #203a43 50%, #2c5364 100%) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
}

.navbar-brand {
    font-weight: 700;
}

.nav-link {
    font-weight: 500;
    transition: all 0.2s;
}

.nav-link:hover {
    transform: translateY(-2px);
    color: #e0e0e0 !important;
}

/* 页脚样式 */
footer {
    position: relative;
    z-index: 1;
    background: linear-gradient(90deg, #0f2027 0%, #203a43 50%, #2c5364 100%) !important;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.05);
}

footer .text-muted {
    color: rgba(255, 255, 255, 0.5) !important;
}

/* 模态框样式 */
.modal-content {
    border: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    background-color: #fff;
}

.modal-header {
    border-bottom: none;
    padding: 1.5rem 1.5rem 0.5rem;
    background: linear-gradient(90deg, rgba(26, 42, 108, 0.02) 0%, rgba(44, 83, 100, 0.05) 100%);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: none;
    padding: 0.5rem 1.5rem 1.5rem;
    background: linear-gradient(90deg, rgba(26, 42, 108, 0.02) 0%, rgba(44, 83, 100, 0.05) 100%);
}