/* 注册页面专用样式 */

/* 性别选择按钮组样式 */
.btn-group .btn-check {
    display: none;
}

.btn-group .btn-check:checked + .btn {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
    color: white;
}

.btn-group .btn-check:hover + .btn {
    background-color: var(--bs-primary-bg-subtle);
    border-color: var(--bs-primary-border-subtle);
    color: var(--bs-primary-text);
}

.btn-group .btn-check:focus + .btn {
    box-shadow: 0 0 0 0.25rem rgba(var(--bs-primary-rgb), 0.25);
}

.btn-group .btn {
    flex: 1;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.15s ease-in-out;
}

/* 性别选择图标样式 */
.btn-group .btn i {
    font-size: 1.1em;
}

/* 表单验证样式 */
.form-control.is-valid {
    border-color: #198754;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-invalid {
    border-color: #dc3545;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

/* 浮动标签样式优化 */
.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label,
.form-floating > .form-select ~ label {
    color: var(--bs-primary);
    opacity: 0.85;
}

/* 密码强度指示器优化 */
.password-strength {
    height: 6px;
    border-radius: 3px;
    margin-top: 0.5rem;
    background: #e9ecef;
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    transition: all 0.3s ease;
    width: 0%;
    border-radius: 3px;
}

.strength-weak { 
    background: linear-gradient(90deg, #dc3545 0%, #f8d7da 100%); 
    width: 33%; 
}

.strength-medium { 
    background: linear-gradient(90deg, #ffc107 0%, #fff3cd 100%); 
    width: 66%; 
}

.strength-strong { 
    background: linear-gradient(90deg, #198754 0%, #d1e7dd 100%); 
    width: 100%; 
}

/* 表单提交按钮优化 */
.btn-register {
    background: var(--gradient);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    width: 100%;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    color: white;
}

.btn-register:active {
    transform: translateY(0);
}

.btn-register:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-register .spinner-border {
    width: 1rem;
    height: 1rem;
    margin-right: 0.5rem;
}

/* 加载状态动画 */
.btn-register.loading {
    color: transparent;
}

.btn-register.loading::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spinner 0.8s linear infinite;
}

@keyframes spinner {
    to { transform: rotate(360deg); }
}

/* 错误提示样式优化 */
.alert {
    border-radius: 10px;
    border: none;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
}

.alert-success {
    background: linear-gradient(135deg, #d1e7dd 0%, #badbcc 100%);
    color: #0f5132;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .btn-group .btn {
        font-size: 0.9rem;
        padding: 0.6rem 0.8rem;
    }
    
    .register-form .row {
        margin-bottom: 0.5rem;
    }
    
    .register-form .row .col-md-6 {
        margin-bottom: 1rem;
    }
    
    .btn-group .btn i {
        font-size: 1em;
    }
}

/* 无障碍访问优化 */
.btn-group .btn-check:focus + .btn {
    outline: 2px solid var(--bs-primary);
    outline-offset: 2px;
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .password-strength {
        background: #495057;
    }
    
    .form-control.is-valid {
        background-color: #1a2e1a;
        border-color: #198754;
    }
    
    .form-control.is-invalid {
        background-color: #2d1b1d;
        border-color: #dc3545;
    }
}

/* 减少动画模式支持 */
@media (prefers-reduced-motion: reduce) {
    .btn-register,
    .btn-register:hover,
    .password-strength-bar,
    .alert {
        transition: none;
    }
    
    .btn-register:disabled {
        transform: none;
    }
}