/* Form Detail Page Styles */

/* Hero Section */
.page-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0 60px;
    color: white;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 1;
}

.page-hero .hero-content {
    position: relative;
    z-index: 2;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.page-subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    margin-bottom: 0;
}

/* Form Section */
.form-section {
    background: #f8f9fa;
    min-height: calc(100vh - 400px);
}

.form-container {
    background: #ffffff;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
    margin-top: -40px;
    position: relative;
    z-index: 3;
}

.registration-form {
    margin-top: 1rem;
}

.registration-form .form-label {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.registration-form .form-label .text-danger {
    color: #dc3545;
}

.registration-form .form-label .text-muted {
    font-weight: 400;
    font-size: 0.9rem;
}

.registration-form .form-control,
.registration-form .form-select {
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.registration-form .form-control:focus,
.registration-form .form-select:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
    outline: none;
}

/* 防止页面加载时就显示验证样式 - 重置未验证状态下的 invalid 样式 */
.registration-form:not(.was-validated) .form-control:invalid:not(:placeholder-shown),
.registration-form:not(.was-validated) .form-select:invalid {
    border-color: #e9ecef !important;
}

/* 只在表单被验证后才显示验证样式 */
.registration-form.was-validated .form-control:invalid:not(:placeholder-shown) {
    border-color: #dc3545;
}

.registration-form.was-validated .form-control:valid:not(:placeholder-shown) {
    border-color: #28a745;
}

/* Select 元素的验证样式 - 只在表单验证后或手动添加 is-invalid 类时显示 */
.registration-form.was-validated .form-select:invalid,
.registration-form .form-select.is-invalid {
    border-color: #dc3545;
}


.registration-form .form-select.is-valid {
    border-color: #28a745;
}

.registration-form .form-select:disabled {
    background-color: #e9ecef;
    opacity: 0.6;
    cursor: not-allowed;
}

.registration-form .form-text {
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

.registration-form .invalid-feedback {
    display: none;
    font-size: 0.875rem;
    color: #dc3545;
    margin-top: 0.25rem;
}

/* Checkbox validation styles */
.registration-form .form-check-input:invalid {
    border-color: #dc3545;
}

.registration-form.was-validated .form-check-input:invalid {
    border-color: #dc3545;
}

.registration-form .form-check-input.is-invalid {
    border-color: #dc3545;
}

.registration-form .form-check-input.is-valid {
    border-color: #28a745;
}

.registration-form .form-check-label {
    color: #495057;
    margin-left: 0.5rem;
    cursor: pointer;
}

/* 只在表单被验证后才显示错误提示 */
.registration-form.was-validated .form-control:invalid:not(:placeholder-shown) ~ .invalid-feedback,
.registration-form.was-validated .form-select:invalid:not([value=""]) ~ .invalid-feedback,
.registration-form.was-validated .form-check-input:invalid ~ .invalid-feedback,
.registration-form .form-control.is-invalid ~ .invalid-feedback,
.registration-form .form-select.is-invalid ~ .invalid-feedback,
.registration-form .form-check-input.is-invalid ~ .invalid-feedback {
    display: block;
}

/* Form Actions */
.form-actions {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid #e9ecef;
}

.form-actions .btn {
    font-weight: 600;
    border-radius: 8px;
    padding: 0.75rem 2rem;
    transition: all 0.3s ease;
}

.form-actions .btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.form-actions .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.form-actions .btn-secondary {
    background: #6c757d;
    border: none;
}

.form-actions .btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(108, 117, 125, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
    .page-title {
        font-size: 1.75rem;
    }

    .page-subtitle {
        font-size: 1rem;
    }

    .form-container {
        padding: 1.5rem;
        margin-top: -20px;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
}