/* 全局样式优化 */
:root {
    --primary-color: #4e73df;
    --secondary-color: #1cc88a;
    --success-color: #1cc88a;
    --info-color: #36b9cc;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --light-color: #f8f9fc;
    --dark-color: #5a5c69;
    --body-bg: #f8f9fc;
    --card-border-radius: 0.75rem;
    --input-border-radius: 0.5rem;
    --box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
    --transition: all 0.3s ease-in-out;
}

body {
    background-color: var(--body-bg);
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* 卡片样式升级 */
.merchant-card {
    border: none;
    border-radius: var(--card-border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow: hidden;
    height: 100%;
    background-color: #fff;
}

.merchant-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.5rem 2rem 0 rgba(58, 59, 69, 0.2);
}

.merchant-card .card-header {
    background-color: #fff;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.merchant-card .card-body {
    padding: 1.5rem;
}

.merchant-card .card-footer {
    background-color: #fff;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1rem 1.5rem;
}

/* 卡片内图片效果 */
.merchant-card .position-relative img {
    transition: var(--transition);
}

.merchant-card:hover .position-relative img {
    transform: scale(1.05);
}

/* 按钮样式优化 */
.btn {
    border-radius: 0.5rem;
    padding: 0.5rem 1.25rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, #4e73df, #3a54c4);
    border-color: #3a54c4;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #3a54c4, #2e429e);
    border-color: #2e429e;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(58, 84, 196, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, #1cc88a, #169a6b);
    border-color: #169a6b;
}

.btn-success:hover {
    background: linear-gradient(135deg, #169a6b, #107d55);
    border-color: #107d55;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(22, 154, 107, 0.3);
}

.btn-outline-primary {
    color: #4e73df;
    border-color: #4e73df;
}

.btn-outline-primary:hover {
    background-color: #4e73df;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(78, 115, 223, 0.2);
}

/* 表单控件优化 */
.form-control, .form-select {
    border-radius: var(--input-border-radius);
    padding: 0.75rem 1rem;
    border: 1px solid #e3e6f0;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: #bac8f3;
    box-shadow: 0 0 0 0.25rem rgba(78, 115, 223, 0.25);
}

/* 登录注册页面样式 */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
    padding: 2rem;
}

.auth-card {
    width: 100%;
    max-width: 450px;
    border-radius: var(--card-border-radius);
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    overflow: hidden;
    background-color: #fff;
}

.auth-header {
    background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
    padding: 2.5rem 2rem;
    text-align: center;
    color: #fff;
}

.auth-header h3 {
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.auth-header p {
    opacity: 0.8;
    margin-bottom: 0;
}

.auth-body {
    padding: 2.5rem 2rem;
}

.auth-footer {
    text-align: center;
    padding: 1.5rem 2rem;
    background-color: #f8f9fc;
    border-top: 1px solid #e3e6f0;
}

.auth-form .form-group {
    margin-bottom: 1.5rem;
}

.auth-form .form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #5a5c69;
}

.auth-form .form-control {
    padding: 0.75rem 1rem;
    height: auto;
}

.auth-form .input-group-text {
    background-color: #f8f9fc;
    border-color: #e3e6f0;
    color: #5a5c69;
}

.auth-form .btn {
    padding: 0.75rem 1.5rem;
    font-weight: 700;
    width: 100%;
}

.auth-divider {
    position: relative;
    text-align: center;
    margin: 1.5rem 0;
}

.auth-divider span {
    display: inline-block;
    padding: 0 1rem;
    background-color: #fff;
    position: relative;
    z-index: 2;
    color: #b7b9cc;
}

.auth-divider:before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-color: #e3e6f0;
    z-index: 1;
}

.social-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.social-buttons .btn {
    flex: 1;
    text-align: center;
    padding: 0.75rem 1rem;
}

.social-buttons .btn i {
    margin-right: 0.5rem;
}

.btn-google {
    background-color: #ea4335;
    border-color: #ea4335;
    color: #fff;
}

.btn-google:hover {
    background-color: #d33426;
    border-color: #d33426;
    color: #fff;
}

.btn-facebook {
    background-color: #3b5998;
    border-color: #3b5998;
    color: #fff;
}

.btn-facebook:hover {
    background-color: #2d4373;
    border-color: #2d4373;
    color: #fff;
}

/* 密码强度指示器 */
.password-strength {
    height: 5px;
    margin-top: 0.5rem;
    border-radius: 5px;
    background-color: #e9ecef;
    overflow: hidden;
}

.password-strength-meter {
    height: 100%;
    border-radius: 5px;
    transition: width 0.3s ease;
}

.strength-weak {
    width: 25%;
    background-color: #e74a3b;
}

.strength-medium {
    width: 50%;
    background-color: #f6c23e;
}

.strength-strong {
    width: 75%;
    background-color: #1cc88a;
}

.strength-very-strong {
    width: 100%;
    background-color: #36b9cc;
}

/* 统计卡片 */
.stat-card {
    border-left: 4px solid;
    border-radius: var(--card-border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background-color: #fff;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-card.primary {
    border-left-color: var(--primary-color);
}

.stat-card.success {
    border-left-color: var(--success-color);
}

.stat-card.info {
    border-left-color: var(--info-color);
}

.stat-card.warning {
    border-left-color: var(--warning-color);
}

.stat-card .stat-icon {
    font-size: 2rem;
    opacity: 0.3;
}

.stat-card.primary .stat-icon {
    color: var(--primary-color);
}

.stat-card.success .stat-icon {
    color: var(--success-color);
}

.stat-card.info .stat-icon {
    color: var(--info-color);
}

.stat-card.warning .stat-icon {
    color: var(--warning-color);
}

.stat-card .stat-title {
    text-transform: uppercase;
    font-size: 0.7rem;
    font-weight: 700;
    color: #b7b9cc;
    letter-spacing: 0.1rem;
    margin-bottom: 0.25rem;
}

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #5a5c69;
    margin-bottom: 0;
}

/* 表格优化 */
.table {
    margin-bottom: 0;
}

.table thead th {
    background-color: #f8f9fc;
    border-bottom: 1px solid #e3e6f0;
    color: #6e707e;
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
}

.table tbody td {
    vertical-align: middle;
    border-color: #e3e6f0;
}

/* 徽章样式优化 */
.badge {
    font-weight: 600;
    padding: 0.35em 0.65em;
    border-radius: 0.25rem;
}

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

.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .auth-card {
        max-width: 100%;
    }
    
    .auth-header, .auth-body, .auth-footer {
        padding: 1.5rem;
    }
}